./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF --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 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:29:20,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:29:20,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:29:20,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:29:20,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:29:20,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:29:20,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:29:20,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:29:20,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:29:20,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:29:20,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:29:20,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:29:20,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:29:20,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:29:20,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:29:20,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:29:20,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:29:20,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:29:20,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:29:20,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:29:20,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:29:20,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:29:20,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:29:20,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:29:20,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:29:20,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:29:20,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:29:20,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:29:20,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:29:20,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:29:20,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:29:20,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:29:20,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:29:20,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:29:20,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:29:20,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:29:20,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:29:20,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:29:20,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:29:20,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:29:20,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:29:20,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:29:20,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:29:20,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:29:20,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:29:20,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:29:20,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:29:20,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:29:20,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:29:20,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:29:20,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:29:20,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:29:20,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:29:20,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:29:20,940 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:29:20,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:29:20,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:29:20,941 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:29:20,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:29:20,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:29:20,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:29:20,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:29:20,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:29:20,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:29:20,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:29:20,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:29:20,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:29:20,945 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:29:20,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:29:20,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:29:20,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:29:20,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:29:20,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:29:20,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:29:20,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:29:20,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:29:20,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:29:20,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:29:20,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:29:20,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:29:20,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:29:20,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:29:20,952 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52cbb0c1391c9e840599beece58e1ecbc8d18028ef540ea98f759da7158f4609 [2021-11-12 22:29:21,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:29:21,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:29:21,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:29:21,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:29:21,321 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:29:21,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 22:29:21,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/data/7f492c234/f4235b970cc2497aa11cf60680fef8c3/FLAG5a8ac71f8 [2021-11-12 22:29:22,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:29:22,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 22:29:22,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/data/7f492c234/f4235b970cc2497aa11cf60680fef8c3/FLAG5a8ac71f8 [2021-11-12 22:29:22,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/data/7f492c234/f4235b970cc2497aa11cf60680fef8c3 [2021-11-12 22:29:22,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:29:22,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:29:22,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:29:22,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:29:22,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:29:22,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:29:22" (1/1) ... [2021-11-12 22:29:22,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a44a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:22, skipping insertion in model container [2021-11-12 22:29:22,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:29:22" (1/1) ... [2021-11-12 22:29:22,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:29:22,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:29:22,884 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2021-11-12 22:29:22,917 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2021-11-12 22:29:22,931 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2021-11-12 22:29:22,956 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2021-11-12 22:29:22,979 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2021-11-12 22:29:22,997 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2021-11-12 22:29:23,024 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2021-11-12 22:29:23,058 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2021-11-12 22:29:23,065 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2021-11-12 22:29:23,079 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2021-11-12 22:29:23,110 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2021-11-12 22:29:23,139 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2021-11-12 22:29:23,160 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2021-11-12 22:29:23,172 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2021-11-12 22:29:23,185 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2021-11-12 22:29:23,215 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2021-11-12 22:29:23,250 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2021-11-12 22:29:23,268 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2021-11-12 22:29:23,280 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2021-11-12 22:29:23,306 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2021-11-12 22:29:23,347 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2021-11-12 22:29:23,385 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2021-11-12 22:29:23,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:29:23,875 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:29:23,981 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2021-11-12 22:29:23,999 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2021-11-12 22:29:24,007 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2021-11-12 22:29:24,013 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2021-11-12 22:29:24,021 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2021-11-12 22:29:24,027 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2021-11-12 22:29:24,033 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2021-11-12 22:29:24,048 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2021-11-12 22:29:24,053 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2021-11-12 22:29:24,060 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2021-11-12 22:29:24,102 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2021-11-12 22:29:24,137 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2021-11-12 22:29:24,142 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2021-11-12 22:29:24,175 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2021-11-12 22:29:24,197 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2021-11-12 22:29:24,213 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2021-11-12 22:29:24,250 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2021-11-12 22:29:24,255 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2021-11-12 22:29:24,260 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2021-11-12 22:29:24,270 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2021-11-12 22:29:24,284 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2021-11-12 22:29:24,311 WARN L228 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_636d89d1-adc4-4657-aa84-f99ec0c61eb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2021-11-12 22:29:24,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:29:24,667 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:29:24,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24 WrapperNode [2021-11-12 22:29:24,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:29:24,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:29:24,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:29:24,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:29:24,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:24,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:24,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:29:24,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:29:24,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:29:24,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:29:24,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:24,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:24,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:24,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:25,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:25,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:25,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:25,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:29:25,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:29:25,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:29:25,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:29:25,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (1/1) ... [2021-11-12 22:29:25,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:29:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:29:25,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:29:25,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:29:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:29:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:29:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:29:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:29:28,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:29:28,765 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:29:28,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:29:28 BoogieIcfgContainer [2021-11-12 22:29:28,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:29:28,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:29:28,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:29:28,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:29:28,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:29:22" (1/3) ... [2021-11-12 22:29:28,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470e121e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:29:28, skipping insertion in model container [2021-11-12 22:29:28,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:29:24" (2/3) ... [2021-11-12 22:29:28,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470e121e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:29:28, skipping insertion in model container [2021-11-12 22:29:28,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:29:28" (3/3) ... [2021-11-12 22:29:28,786 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 22:29:28,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:29:28,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-12 22:29:28,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:29:28,875 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 [2021-11-12 22:29:28,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-12 22:29:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 1064 states have (on average 1.8646616541353382) internal successors, (1984), 1086 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-12 22:29:28,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:28,963 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] [2021-11-12 22:29:28,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash -744865271, now seen corresponding path program 1 times [2021-11-12 22:29:28,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:28,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009393823] [2021-11-12 22:29:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:28,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:29,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:29,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009393823] [2021-11-12 22:29:29,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009393823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:29,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:29,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:29,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401941897] [2021-11-12 22:29:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:29,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:29,616 INFO L87 Difference]: Start difference. First operand has 1087 states, 1064 states have (on average 1.8646616541353382) internal successors, (1984), 1086 states have internal predecessors, (1984), 0 states have call successors, (0), 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 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:30,689 INFO L93 Difference]: Finished difference Result 1627 states and 2869 transitions. [2021-11-12 22:29:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-12 22:29:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:30,712 INFO L225 Difference]: With dead ends: 1627 [2021-11-12 22:29:30,713 INFO L226 Difference]: Without dead ends: 841 [2021-11-12 22:29:30,720 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 [2021-11-12 22:29:30,729 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 4301 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 647.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.04ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 809.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:30,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 1013 Invalid, 524 Unknown, 0 Unchecked, 33.04ms Time], IncrementalHoareTripleChecker [19 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 809.56ms Time] [2021-11-12 22:29:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-11-12 22:29:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2021-11-12 22:29:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 819 states have (on average 1.2991452991452992) internal successors, (1064), 840 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1064 transitions. [2021-11-12 22:29:30,836 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1064 transitions. Word has length 84 [2021-11-12 22:29:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:30,837 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1064 transitions. [2021-11-12 22:29:30,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1064 transitions. [2021-11-12 22:29:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 22:29:30,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:30,845 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] [2021-11-12 22:29:30,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:29:30,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 861830130, now seen corresponding path program 1 times [2021-11-12 22:29:30,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:30,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295313824] [2021-11-12 22:29:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:30,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:31,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:31,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295313824] [2021-11-12 22:29:31,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295313824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:31,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:31,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:31,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031001330] [2021-11-12 22:29:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:31,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:31,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:31,072 INFO L87 Difference]: Start difference. First operand 841 states and 1064 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:31,637 INFO L93 Difference]: Finished difference Result 1375 states and 1790 transitions. [2021-11-12 22:29:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-12 22:29:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:31,643 INFO L225 Difference]: With dead ends: 1375 [2021-11-12 22:29:31,643 INFO L226 Difference]: Without dead ends: 710 [2021-11-12 22:29:31,645 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 [2021-11-12 22:29:31,651 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2693 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 375.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2693 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 468.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:31,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2693 Valid, 526 Invalid, 403 Unknown, 0 Unchecked, 15.02ms Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 468.36ms Time] [2021-11-12 22:29:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-12 22:29:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2021-11-12 22:29:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 688 states have (on average 1.3313953488372092) internal successors, (916), 709 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 916 transitions. [2021-11-12 22:29:31,700 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 916 transitions. Word has length 85 [2021-11-12 22:29:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:31,702 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 916 transitions. [2021-11-12 22:29:31,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 916 transitions. [2021-11-12 22:29:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-12 22:29:31,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:31,708 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] [2021-11-12 22:29:31,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:29:31,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash 139657888, now seen corresponding path program 1 times [2021-11-12 22:29:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:31,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798116411] [2021-11-12 22:29:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:31,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:31,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:31,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798116411] [2021-11-12 22:29:31,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798116411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:31,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:31,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:31,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722765284] [2021-11-12 22:29:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:31,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:31,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:31,921 INFO L87 Difference]: Start difference. First operand 710 states and 916 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:32,591 INFO L93 Difference]: Finished difference Result 1244 states and 1641 transitions. [2021-11-12 22:29:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:32,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-12 22:29:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:32,596 INFO L225 Difference]: With dead ends: 1244 [2021-11-12 22:29:32,596 INFO L226 Difference]: Without dead ends: 670 [2021-11-12 22:29:32,598 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 [2021-11-12 22:29:32,599 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 2401 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 466.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 570.69ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:32,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 431 Invalid, 589 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [107 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 570.69ms Time] [2021-11-12 22:29:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-12 22:29:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2021-11-12 22:29:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 648 states have (on average 1.337962962962963) internal successors, (867), 669 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 867 transitions. [2021-11-12 22:29:32,643 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 867 transitions. Word has length 86 [2021-11-12 22:29:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:32,644 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 867 transitions. [2021-11-12 22:29:32,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 867 transitions. [2021-11-12 22:29:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 22:29:32,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:32,647 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] [2021-11-12 22:29:32,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:29:32,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1409043309, now seen corresponding path program 1 times [2021-11-12 22:29:32,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:32,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051438046] [2021-11-12 22:29:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:32,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:32,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:32,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051438046] [2021-11-12 22:29:32,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051438046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:32,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:32,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:32,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081125208] [2021-11-12 22:29:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:32,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:32,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:32,755 INFO L87 Difference]: Start difference. First operand 670 states and 867 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:33,321 INFO L93 Difference]: Finished difference Result 1204 states and 1591 transitions. [2021-11-12 22:29:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-12 22:29:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:33,326 INFO L225 Difference]: With dead ends: 1204 [2021-11-12 22:29:33,326 INFO L226 Difference]: Without dead ends: 632 [2021-11-12 22:29:33,327 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 [2021-11-12 22:29:33,328 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 2364 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 468.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:33,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2364 Valid, 463 Invalid, 420 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [29 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 468.61ms Time] [2021-11-12 22:29:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-12 22:29:33,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-11-12 22:29:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 610 states have (on average 1.3508196721311476) internal successors, (824), 631 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 824 transitions. [2021-11-12 22:29:33,366 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 824 transitions. Word has length 87 [2021-11-12 22:29:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:33,367 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 824 transitions. [2021-11-12 22:29:33,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 824 transitions. [2021-11-12 22:29:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-12 22:29:33,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:33,370 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] [2021-11-12 22:29:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:29:33,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1145590041, now seen corresponding path program 1 times [2021-11-12 22:29:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:33,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539895446] [2021-11-12 22:29:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:33,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:33,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:33,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539895446] [2021-11-12 22:29:33,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539895446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:33,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:33,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:33,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930559823] [2021-11-12 22:29:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:33,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:33,495 INFO L87 Difference]: Start difference. First operand 632 states and 824 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:34,014 INFO L93 Difference]: Finished difference Result 1166 states and 1547 transitions. [2021-11-12 22:29:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-12 22:29:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:34,019 INFO L225 Difference]: With dead ends: 1166 [2021-11-12 22:29:34,019 INFO L226 Difference]: Without dead ends: 607 [2021-11-12 22:29:34,020 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 [2021-11-12 22:29:34,022 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 2319 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.11ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 427.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:34,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 450 Invalid, 370 Unknown, 0 Unchecked, 8.11ms Time], IncrementalHoareTripleChecker [10 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 427.11ms Time] [2021-11-12 22:29:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-12 22:29:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-11-12 22:29:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3606837606837607) internal successors, (796), 606 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 796 transitions. [2021-11-12 22:29:34,068 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 796 transitions. Word has length 88 [2021-11-12 22:29:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:34,069 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 796 transitions. [2021-11-12 22:29:34,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 796 transitions. [2021-11-12 22:29:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 22:29:34,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:34,072 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] [2021-11-12 22:29:34,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:29:34,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash -81085098, now seen corresponding path program 1 times [2021-11-12 22:29:34,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:34,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542599791] [2021-11-12 22:29:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:34,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:34,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:34,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542599791] [2021-11-12 22:29:34,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542599791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:34,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:34,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:29:34,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023867594] [2021-11-12 22:29:34,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:34,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:29:34,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:29:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:29:34,161 INFO L87 Difference]: Start difference. First operand 607 states and 796 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:34,703 INFO L93 Difference]: Finished difference Result 1141 states and 1518 transitions. [2021-11-12 22:29:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:29:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-12 22:29:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:34,708 INFO L225 Difference]: With dead ends: 1141 [2021-11-12 22:29:34,708 INFO L226 Difference]: Without dead ends: 599 [2021-11-12 22:29:34,709 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 [2021-11-12 22:29:34,713 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 2214 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 365.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 454.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:34,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 426 Invalid, 450 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [52 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 454.77ms Time] [2021-11-12 22:29:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-12 22:29:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-12 22:29:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3622183708838822) internal successors, (786), 598 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 786 transitions. [2021-11-12 22:29:34,757 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 786 transitions. Word has length 89 [2021-11-12 22:29:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:34,758 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 786 transitions. [2021-11-12 22:29:34,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 786 transitions. [2021-11-12 22:29:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 22:29:34,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:34,761 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] [2021-11-12 22:29:34,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:29:34,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1177000506, now seen corresponding path program 1 times [2021-11-12 22:29:34,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:34,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187763335] [2021-11-12 22:29:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:34,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:34,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:34,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187763335] [2021-11-12 22:29:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187763335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:34,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:34,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:29:34,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230463215] [2021-11-12 22:29:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:29:34,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:29:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:29:34,965 INFO L87 Difference]: Start difference. First operand 599 states and 786 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:36,021 INFO L93 Difference]: Finished difference Result 1105 states and 1397 transitions. [2021-11-12 22:29:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:29:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-12 22:29:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:36,026 INFO L225 Difference]: With dead ends: 1105 [2021-11-12 22:29:36,026 INFO L226 Difference]: Without dead ends: 787 [2021-11-12 22:29:36,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:29:36,028 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2452 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 697.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.98ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 843.94ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:36,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 933 Invalid, 1077 Unknown, 0 Unchecked, 15.98ms Time], IncrementalHoareTripleChecker [70 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 843.94ms Time] [2021-11-12 22:29:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-12 22:29:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 599. [2021-11-12 22:29:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3604852686308493) internal successors, (785), 598 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 785 transitions. [2021-11-12 22:29:36,087 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 785 transitions. Word has length 90 [2021-11-12 22:29:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:36,087 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 785 transitions. [2021-11-12 22:29:36,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 785 transitions. [2021-11-12 22:29:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 22:29:36,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:36,090 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] [2021-11-12 22:29:36,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:29:36,091 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1435926047, now seen corresponding path program 1 times [2021-11-12 22:29:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:36,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11994751] [2021-11-12 22:29:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:36,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:36,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:36,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11994751] [2021-11-12 22:29:36,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11994751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:36,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:36,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:36,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490777542] [2021-11-12 22:29:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:36,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:36,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:36,348 INFO L87 Difference]: Start difference. First operand 599 states and 785 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:38,192 INFO L93 Difference]: Finished difference Result 1177 states and 1548 transitions. [2021-11-12 22:29:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:38,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-12 22:29:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:38,198 INFO L225 Difference]: With dead ends: 1177 [2021-11-12 22:29:38,198 INFO L226 Difference]: Without dead ends: 1016 [2021-11-12 22:29:38,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:29:38,200 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 2927 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1239.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.41ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1513.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:38,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2927 Valid, 3396 Invalid, 2557 Unknown, 0 Unchecked, 22.41ms Time], IncrementalHoareTripleChecker [16 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 1513.57ms Time] [2021-11-12 22:29:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-12 22:29:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 599. [2021-11-12 22:29:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3587521663778164) internal successors, (784), 598 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 784 transitions. [2021-11-12 22:29:38,253 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 784 transitions. Word has length 90 [2021-11-12 22:29:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:38,254 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 784 transitions. [2021-11-12 22:29:38,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 784 transitions. [2021-11-12 22:29:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 22:29:38,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:38,256 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] [2021-11-12 22:29:38,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:29:38,257 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1452291629, now seen corresponding path program 1 times [2021-11-12 22:29:38,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:38,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839090593] [2021-11-12 22:29:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:38,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:38,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:38,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839090593] [2021-11-12 22:29:38,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839090593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:38,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:38,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:38,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399321059] [2021-11-12 22:29:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:38,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:38,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:38,467 INFO L87 Difference]: Start difference. First operand 599 states and 784 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:40,220 INFO L93 Difference]: Finished difference Result 1104 states and 1451 transitions. [2021-11-12 22:29:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-12 22:29:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:40,227 INFO L225 Difference]: With dead ends: 1104 [2021-11-12 22:29:40,227 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:29:40,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:29:40,229 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 2622 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1179.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.06ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1442.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:40,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2622 Valid, 2930 Invalid, 2402 Unknown, 0 Unchecked, 19.06ms Time], IncrementalHoareTripleChecker [24 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1442.46ms Time] [2021-11-12 22:29:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:29:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2021-11-12 22:29:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3570190641247835) internal successors, (783), 598 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 783 transitions. [2021-11-12 22:29:40,302 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 783 transitions. Word has length 90 [2021-11-12 22:29:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:40,303 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 783 transitions. [2021-11-12 22:29:40,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 783 transitions. [2021-11-12 22:29:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:40,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:40,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:40,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:29:40,306 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash 280311879, now seen corresponding path program 1 times [2021-11-12 22:29:40,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:40,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473602704] [2021-11-12 22:29:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:40,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:40,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:40,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473602704] [2021-11-12 22:29:40,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473602704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:40,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:40,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:40,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297264649] [2021-11-12 22:29:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:40,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:40,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:40,513 INFO L87 Difference]: Start difference. First operand 599 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:42,236 INFO L93 Difference]: Finished difference Result 1211 states and 1580 transitions. [2021-11-12 22:29:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:29:42,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:42,243 INFO L225 Difference]: With dead ends: 1211 [2021-11-12 22:29:42,244 INFO L226 Difference]: Without dead ends: 1016 [2021-11-12 22:29:42,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:29:42,249 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 2867 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1143.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.48ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1386.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:42,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 2529 Invalid, 2221 Unknown, 0 Unchecked, 21.48ms Time], IncrementalHoareTripleChecker [20 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1386.06ms Time] [2021-11-12 22:29:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-12 22:29:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 599. [2021-11-12 22:29:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3552859618717505) internal successors, (782), 598 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 782 transitions. [2021-11-12 22:29:42,325 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 782 transitions. Word has length 92 [2021-11-12 22:29:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 782 transitions. [2021-11-12 22:29:42,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 782 transitions. [2021-11-12 22:29:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:42,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:42,328 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] [2021-11-12 22:29:42,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 22:29:42,329 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 347470600, now seen corresponding path program 1 times [2021-11-12 22:29:42,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:42,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750857336] [2021-11-12 22:29:42,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:42,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:42,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:42,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750857336] [2021-11-12 22:29:42,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750857336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:42,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:42,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:42,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988213670] [2021-11-12 22:29:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:42,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:42,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:42,566 INFO L87 Difference]: Start difference. First operand 599 states and 782 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:44,291 INFO L93 Difference]: Finished difference Result 1076 states and 1402 transitions. [2021-11-12 22:29:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:44,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:44,298 INFO L225 Difference]: With dead ends: 1076 [2021-11-12 22:29:44,298 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 22:29:44,299 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 [2021-11-12 22:29:44,299 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 2519 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1164.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.67ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1428.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:44,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2519 Valid, 2691 Invalid, 2307 Unknown, 0 Unchecked, 15.67ms Time], IncrementalHoareTripleChecker [38 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 1428.23ms Time] [2021-11-12 22:29:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 22:29:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2021-11-12 22:29:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3535528596187174) internal successors, (781), 598 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 781 transitions. [2021-11-12 22:29:44,372 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 781 transitions. Word has length 92 [2021-11-12 22:29:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:44,373 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 781 transitions. [2021-11-12 22:29:44,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 781 transitions. [2021-11-12 22:29:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:44,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:44,376 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] [2021-11-12 22:29:44,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 22:29:44,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash -950419438, now seen corresponding path program 1 times [2021-11-12 22:29:44,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:44,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152235114] [2021-11-12 22:29:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:44,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:44,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:44,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152235114] [2021-11-12 22:29:44,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152235114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:44,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:44,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:44,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769340340] [2021-11-12 22:29:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:44,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:44,529 INFO L87 Difference]: Start difference. First operand 599 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:46,343 INFO L93 Difference]: Finished difference Result 1119 states and 1460 transitions. [2021-11-12 22:29:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:46,351 INFO L225 Difference]: With dead ends: 1119 [2021-11-12 22:29:46,352 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:29:46,352 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 [2021-11-12 22:29:46,353 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 2592 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1252.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.24ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1520.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:46,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2592 Valid, 3507 Invalid, 2653 Unknown, 0 Unchecked, 15.24ms Time], IncrementalHoareTripleChecker [23 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 1520.19ms Time] [2021-11-12 22:29:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:29:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2021-11-12 22:29:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3518197573656845) internal successors, (780), 598 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 780 transitions. [2021-11-12 22:29:46,425 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 780 transitions. Word has length 92 [2021-11-12 22:29:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:46,425 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 780 transitions. [2021-11-12 22:29:46,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 780 transitions. [2021-11-12 22:29:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:46,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:46,428 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] [2021-11-12 22:29:46,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 22:29:46,428 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1340210149, now seen corresponding path program 1 times [2021-11-12 22:29:46,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:46,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49374000] [2021-11-12 22:29:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:46,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:46,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:46,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49374000] [2021-11-12 22:29:46,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49374000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:46,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:46,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:46,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457654791] [2021-11-12 22:29:46,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:46,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:46,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:46,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:46,595 INFO L87 Difference]: Start difference. First operand 599 states and 780 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:48,372 INFO L93 Difference]: Finished difference Result 1076 states and 1401 transitions. [2021-11-12 22:29:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:48,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:48,379 INFO L225 Difference]: With dead ends: 1076 [2021-11-12 22:29:48,379 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 22:29:48,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:29:48,380 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 2505 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1233.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.23ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1473.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:48,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 2907 Invalid, 2413 Unknown, 0 Unchecked, 13.23ms Time], IncrementalHoareTripleChecker [38 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1473.57ms Time] [2021-11-12 22:29:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 22:29:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2021-11-12 22:29:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3500866551126516) internal successors, (779), 598 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 779 transitions. [2021-11-12 22:29:48,449 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 779 transitions. Word has length 92 [2021-11-12 22:29:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:48,449 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 779 transitions. [2021-11-12 22:29:48,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 779 transitions. [2021-11-12 22:29:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:48,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:48,452 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] [2021-11-12 22:29:48,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 22:29:48,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2065712337, now seen corresponding path program 1 times [2021-11-12 22:29:48,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:48,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131262624] [2021-11-12 22:29:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:48,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:48,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:48,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131262624] [2021-11-12 22:29:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131262624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:48,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:48,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:29:48,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841410784] [2021-11-12 22:29:48,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:48,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:29:48,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:29:48,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:29:48,708 INFO L87 Difference]: Start difference. First operand 599 states and 779 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:51,550 INFO L93 Difference]: Finished difference Result 1497 states and 1962 transitions. [2021-11-12 22:29:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 22:29:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:51,558 INFO L225 Difference]: With dead ends: 1497 [2021-11-12 22:29:51,558 INFO L226 Difference]: Without dead ends: 1386 [2021-11-12 22:29:51,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:29:51,560 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 4780 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1613.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.46ms SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1984.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:51,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4780 Valid, 3531 Invalid, 3675 Unknown, 0 Unchecked, 37.46ms Time], IncrementalHoareTripleChecker [465 Valid, 3210 Invalid, 0 Unknown, 0 Unchecked, 1984.01ms Time] [2021-11-12 22:29:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-12 22:29:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 603. [2021-11-12 22:29:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3476764199655766) internal successors, (783), 602 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 783 transitions. [2021-11-12 22:29:51,649 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 783 transitions. Word has length 92 [2021-11-12 22:29:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:51,650 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 783 transitions. [2021-11-12 22:29:51,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 783 transitions. [2021-11-12 22:29:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:51,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:51,653 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] [2021-11-12 22:29:51,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 22:29:51,653 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash -98755353, now seen corresponding path program 1 times [2021-11-12 22:29:51,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:51,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475098119] [2021-11-12 22:29:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:51,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:51,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:51,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475098119] [2021-11-12 22:29:51,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475098119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:51,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908030461] [2021-11-12 22:29:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:51,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:51,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:51,823 INFO L87 Difference]: Start difference. First operand 603 states and 783 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:53,643 INFO L93 Difference]: Finished difference Result 1074 states and 1398 transitions. [2021-11-12 22:29:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:29:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:53,649 INFO L225 Difference]: With dead ends: 1074 [2021-11-12 22:29:53,650 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:29:53,650 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 [2021-11-12 22:29:53,651 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 2525 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1205.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.97ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1458.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:53,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 2889 Invalid, 2405 Unknown, 0 Unchecked, 16.97ms Time], IncrementalHoareTripleChecker [38 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1458.41ms Time] [2021-11-12 22:29:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:29:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2021-11-12 22:29:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3459552495697074) internal successors, (782), 602 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 782 transitions. [2021-11-12 22:29:53,732 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 782 transitions. Word has length 92 [2021-11-12 22:29:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:53,733 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 782 transitions. [2021-11-12 22:29:53,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 782 transitions. [2021-11-12 22:29:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-12 22:29:53,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:53,735 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] [2021-11-12 22:29:53,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 22:29:53,736 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1715587412, now seen corresponding path program 1 times [2021-11-12 22:29:53,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:53,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222862598] [2021-11-12 22:29:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:53,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222862598] [2021-11-12 22:29:53,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222862598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:53,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:53,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:29:53,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18769457] [2021-11-12 22:29:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:53,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:29:53,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:29:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:29:53,977 INFO L87 Difference]: Start difference. First operand 603 states and 782 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:56,696 INFO L93 Difference]: Finished difference Result 1395 states and 1821 transitions. [2021-11-12 22:29:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 22:29:56,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-12 22:29:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:56,703 INFO L225 Difference]: With dead ends: 1395 [2021-11-12 22:29:56,703 INFO L226 Difference]: Without dead ends: 1323 [2021-11-12 22:29:56,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:29:56,706 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 5067 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1536.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5067 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.49ms SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1880.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:56,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5067 Valid, 3234 Invalid, 3675 Unknown, 0 Unchecked, 17.49ms Time], IncrementalHoareTripleChecker [554 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 1880.00ms Time] [2021-11-12 22:29:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2021-11-12 22:29:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 607. [2021-11-12 22:29:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3435897435897435) internal successors, (786), 606 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 786 transitions. [2021-11-12 22:29:56,803 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 786 transitions. Word has length 92 [2021-11-12 22:29:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 786 transitions. [2021-11-12 22:29:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 786 transitions. [2021-11-12 22:29:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-12 22:29:56,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:56,806 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] [2021-11-12 22:29:56,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 22:29:56,807 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash 343046810, now seen corresponding path program 1 times [2021-11-12 22:29:56,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:56,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251437071] [2021-11-12 22:29:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:56,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:56,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:56,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251437071] [2021-11-12 22:29:56,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251437071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:56,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:56,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:56,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879618285] [2021-11-12 22:29:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:56,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:56,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:56,951 INFO L87 Difference]: Start difference. First operand 607 states and 786 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:58,283 INFO L93 Difference]: Finished difference Result 1080 states and 1401 transitions. [2021-11-12 22:29:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:29:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-12 22:29:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:58,289 INFO L225 Difference]: With dead ends: 1080 [2021-11-12 22:29:58,289 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:29:58,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:29:58,291 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1948 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 838.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1030.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:58,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 2321 Invalid, 2081 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [34 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1030.56ms Time] [2021-11-12 22:29:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:29:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2021-11-12 22:29:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3442340791738383) internal successors, (781), 602 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 781 transitions. [2021-11-12 22:29:58,382 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 781 transitions. Word has length 93 [2021-11-12 22:29:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:58,383 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 781 transitions. [2021-11-12 22:29:58,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 781 transitions. [2021-11-12 22:29:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-12 22:29:58,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:58,386 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] [2021-11-12 22:29:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-12 22:29:58,386 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:29:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1488242838, now seen corresponding path program 1 times [2021-11-12 22:29:58,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:58,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273316428] [2021-11-12 22:29:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:58,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:58,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:58,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273316428] [2021-11-12 22:29:58,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273316428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:29:58,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:29:58,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:29:58,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188293745] [2021-11-12 22:29:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:29:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:29:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:29:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:29:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:29:58,506 INFO L87 Difference]: Start difference. First operand 603 states and 781 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:59,925 INFO L93 Difference]: Finished difference Result 1119 states and 1457 transitions. [2021-11-12 22:29:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:29:59,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-12 22:29:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:59,931 INFO L225 Difference]: With dead ends: 1119 [2021-11-12 22:29:59,931 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:29:59,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:29:59,933 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 2605 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 875.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1076.83ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:59,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2605 Valid, 2760 Invalid, 2356 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [26 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1076.83ms Time] [2021-11-12 22:29:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:30:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2021-11-12 22:30:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3448873483535528) internal successors, (776), 598 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 776 transitions. [2021-11-12 22:30:00,019 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 776 transitions. Word has length 93 [2021-11-12 22:30:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:00,019 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 776 transitions. [2021-11-12 22:30:00,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 776 transitions. [2021-11-12 22:30:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:00,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:00,022 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] [2021-11-12 22:30:00,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 22:30:00,023 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 514536132, now seen corresponding path program 1 times [2021-11-12 22:30:00,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:00,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120598310] [2021-11-12 22:30:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:00,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:00,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:00,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120598310] [2021-11-12 22:30:00,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120598310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:00,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:00,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:00,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949852632] [2021-11-12 22:30:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:00,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:00,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:00,171 INFO L87 Difference]: Start difference. First operand 599 states and 776 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:01,491 INFO L93 Difference]: Finished difference Result 1085 states and 1404 transitions. [2021-11-12 22:30:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:01,496 INFO L225 Difference]: With dead ends: 1085 [2021-11-12 22:30:01,496 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 22:30:01,497 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 [2021-11-12 22:30:01,497 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 2653 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 835.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1024.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:01,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2653 Valid, 3001 Invalid, 2320 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [39 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1024.64ms Time] [2021-11-12 22:30:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 22:30:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2021-11-12 22:30:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.34315424610052) internal successors, (775), 598 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 775 transitions. [2021-11-12 22:30:01,603 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 775 transitions. Word has length 94 [2021-11-12 22:30:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:01,603 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 775 transitions. [2021-11-12 22:30:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 775 transitions. [2021-11-12 22:30:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:01,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:01,606 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] [2021-11-12 22:30:01,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-12 22:30:01,606 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 105690904, now seen corresponding path program 1 times [2021-11-12 22:30:01,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:01,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776596905] [2021-11-12 22:30:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:01,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:01,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:01,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776596905] [2021-11-12 22:30:01,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776596905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:01,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:01,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960638303] [2021-11-12 22:30:01,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:01,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:01,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:01,735 INFO L87 Difference]: Start difference. First operand 599 states and 775 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:03,228 INFO L93 Difference]: Finished difference Result 1047 states and 1349 transitions. [2021-11-12 22:30:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:03,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:03,234 INFO L225 Difference]: With dead ends: 1047 [2021-11-12 22:30:03,234 INFO L226 Difference]: Without dead ends: 988 [2021-11-12 22:30:03,235 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 [2021-11-12 22:30:03,236 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 2480 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 921.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1144.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:03,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2480 Valid, 2385 Invalid, 1996 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [66 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1144.71ms Time] [2021-11-12 22:30:03,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-12 22:30:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2021-11-12 22:30:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.341421143847487) internal successors, (774), 598 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 774 transitions. [2021-11-12 22:30:03,337 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 774 transitions. Word has length 94 [2021-11-12 22:30:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:03,337 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 774 transitions. [2021-11-12 22:30:03,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 774 transitions. [2021-11-12 22:30:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:03,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:03,339 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] [2021-11-12 22:30:03,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-12 22:30:03,340 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash 909968804, now seen corresponding path program 1 times [2021-11-12 22:30:03,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:03,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126062803] [2021-11-12 22:30:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:03,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:03,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:03,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126062803] [2021-11-12 22:30:03,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126062803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:03,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:03,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:03,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508962521] [2021-11-12 22:30:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:03,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:03,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:03,471 INFO L87 Difference]: Start difference. First operand 599 states and 774 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:05,235 INFO L93 Difference]: Finished difference Result 1134 states and 1465 transitions. [2021-11-12 22:30:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:05,240 INFO L225 Difference]: With dead ends: 1134 [2021-11-12 22:30:05,241 INFO L226 Difference]: Without dead ends: 1008 [2021-11-12 22:30:05,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:30:05,242 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1847 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1088.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.95ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1333.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:05,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 2694 Invalid, 2269 Unknown, 0 Unchecked, 13.95ms Time], IncrementalHoareTripleChecker [19 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1333.14ms Time] [2021-11-12 22:30:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-12 22:30:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 599. [2021-11-12 22:30:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.339688041594454) internal successors, (773), 598 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 773 transitions. [2021-11-12 22:30:05,341 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 773 transitions. Word has length 94 [2021-11-12 22:30:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:05,342 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 773 transitions. [2021-11-12 22:30:05,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 773 transitions. [2021-11-12 22:30:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:05,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:05,344 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] [2021-11-12 22:30:05,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-12 22:30:05,344 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 556568795, now seen corresponding path program 1 times [2021-11-12 22:30:05,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:05,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511567402] [2021-11-12 22:30:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:05,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:05,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:05,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511567402] [2021-11-12 22:30:05,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511567402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:05,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:05,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:05,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152301295] [2021-11-12 22:30:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:05,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:05,483 INFO L87 Difference]: Start difference. First operand 599 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:06,813 INFO L93 Difference]: Finished difference Result 1043 states and 1343 transitions. [2021-11-12 22:30:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:06,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:06,820 INFO L225 Difference]: With dead ends: 1043 [2021-11-12 22:30:06,820 INFO L226 Difference]: Without dead ends: 988 [2021-11-12 22:30:06,821 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 [2021-11-12 22:30:06,822 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2467 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 825.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.25ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1022.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:06,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 2452 Invalid, 2058 Unknown, 0 Unchecked, 10.25ms Time], IncrementalHoareTripleChecker [65 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1022.47ms Time] [2021-11-12 22:30:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-12 22:30:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2021-11-12 22:30:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3379549393414212) internal successors, (772), 598 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 772 transitions. [2021-11-12 22:30:06,933 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 772 transitions. Word has length 94 [2021-11-12 22:30:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:06,933 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 772 transitions. [2021-11-12 22:30:06,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 772 transitions. [2021-11-12 22:30:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:06,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:06,936 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] [2021-11-12 22:30:06,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-12 22:30:06,936 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1887678960, now seen corresponding path program 1 times [2021-11-12 22:30:06,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:06,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417808322] [2021-11-12 22:30:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:06,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:07,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:07,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417808322] [2021-11-12 22:30:07,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417808322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:07,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:07,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:07,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324401403] [2021-11-12 22:30:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:07,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:07,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:07,064 INFO L87 Difference]: Start difference. First operand 599 states and 772 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:08,509 INFO L93 Difference]: Finished difference Result 1047 states and 1345 transitions. [2021-11-12 22:30:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:08,514 INFO L225 Difference]: With dead ends: 1047 [2021-11-12 22:30:08,514 INFO L226 Difference]: Without dead ends: 988 [2021-11-12 22:30:08,515 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 [2021-11-12 22:30:08,515 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1696 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 933.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.57ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1142.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:08,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 2954 Invalid, 2515 Unknown, 0 Unchecked, 9.57ms Time], IncrementalHoareTripleChecker [45 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1142.48ms Time] [2021-11-12 22:30:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-12 22:30:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2021-11-12 22:30:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3362218370883883) internal successors, (771), 598 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 771 transitions. [2021-11-12 22:30:08,594 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 771 transitions. Word has length 94 [2021-11-12 22:30:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:08,594 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 771 transitions. [2021-11-12 22:30:08,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 771 transitions. [2021-11-12 22:30:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:08,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:08,596 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] [2021-11-12 22:30:08,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-12 22:30:08,596 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2039186161, now seen corresponding path program 1 times [2021-11-12 22:30:08,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:08,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589997623] [2021-11-12 22:30:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:08,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:08,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:08,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589997623] [2021-11-12 22:30:08,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589997623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:08,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:08,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:08,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190981392] [2021-11-12 22:30:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:08,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:08,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:08,730 INFO L87 Difference]: Start difference. First operand 599 states and 771 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:09,989 INFO L93 Difference]: Finished difference Result 1047 states and 1343 transitions. [2021-11-12 22:30:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:09,993 INFO L225 Difference]: With dead ends: 1047 [2021-11-12 22:30:09,994 INFO L226 Difference]: Without dead ends: 988 [2021-11-12 22:30:09,994 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 [2021-11-12 22:30:09,995 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1737 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 792.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.25ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 975.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:09,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 2690 Invalid, 2228 Unknown, 0 Unchecked, 8.25ms Time], IncrementalHoareTripleChecker [47 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 975.61ms Time] [2021-11-12 22:30:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-12 22:30:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 599. [2021-11-12 22:30:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.3344887348353554) internal successors, (770), 598 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 770 transitions. [2021-11-12 22:30:10,075 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 770 transitions. Word has length 94 [2021-11-12 22:30:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:10,075 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 770 transitions. [2021-11-12 22:30:10,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 770 transitions. [2021-11-12 22:30:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:10,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:10,078 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] [2021-11-12 22:30:10,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-12 22:30:10,078 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1846935907, now seen corresponding path program 1 times [2021-11-12 22:30:10,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:10,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633992320] [2021-11-12 22:30:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:10,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:10,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:10,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633992320] [2021-11-12 22:30:10,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633992320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:10,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:10,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:30:10,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518982268] [2021-11-12 22:30:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:10,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:30:10,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:30:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:30:10,281 INFO L87 Difference]: Start difference. First operand 599 states and 770 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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) [2021-11-12 22:30:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:12,777 INFO L93 Difference]: Finished difference Result 1408 states and 1820 transitions. [2021-11-12 22:30:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 22:30:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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 [2021-11-12 22:30:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:12,783 INFO L225 Difference]: With dead ends: 1408 [2021-11-12 22:30:12,783 INFO L226 Difference]: Without dead ends: 1327 [2021-11-12 22:30:12,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:30:12,784 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 4545 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1343.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.83ms SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1626.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:12,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4545 Valid, 3074 Invalid, 3279 Unknown, 0 Unchecked, 13.83ms Time], IncrementalHoareTripleChecker [487 Valid, 2792 Invalid, 0 Unknown, 0 Unchecked, 1626.27ms Time] [2021-11-12 22:30:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-11-12 22:30:12,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 603. [2021-11-12 22:30:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3321858864027538) internal successors, (774), 602 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 774 transitions. [2021-11-12 22:30:12,868 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 774 transitions. Word has length 94 [2021-11-12 22:30:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:12,869 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 774 transitions. [2021-11-12 22:30:12,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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) [2021-11-12 22:30:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 774 transitions. [2021-11-12 22:30:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:12,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:12,871 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] [2021-11-12 22:30:12,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-12 22:30:12,871 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash -251225405, now seen corresponding path program 1 times [2021-11-12 22:30:12,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:12,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002642551] [2021-11-12 22:30:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:12,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:12,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:12,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002642551] [2021-11-12 22:30:12,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002642551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:12,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:12,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:12,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518785699] [2021-11-12 22:30:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:12,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:12,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:12,985 INFO L87 Difference]: Start difference. First operand 603 states and 774 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:14,310 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2021-11-12 22:30:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:14,314 INFO L225 Difference]: With dead ends: 1051 [2021-11-12 22:30:14,314 INFO L226 Difference]: Without dead ends: 992 [2021-11-12 22:30:14,315 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 [2021-11-12 22:30:14,315 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1694 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 827.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1017.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:14,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 2649 Invalid, 2231 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [46 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1017.47ms Time] [2021-11-12 22:30:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-12 22:30:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2021-11-12 22:30:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3304647160068848) internal successors, (773), 602 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 773 transitions. [2021-11-12 22:30:14,401 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 773 transitions. Word has length 94 [2021-11-12 22:30:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:14,401 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 773 transitions. [2021-11-12 22:30:14,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 773 transitions. [2021-11-12 22:30:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:14,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:14,404 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] [2021-11-12 22:30:14,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-12 22:30:14,404 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2102424565, now seen corresponding path program 1 times [2021-11-12 22:30:14,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:14,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467059096] [2021-11-12 22:30:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:14,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:14,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:14,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467059096] [2021-11-12 22:30:14,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467059096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:14,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:14,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:14,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089663899] [2021-11-12 22:30:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:14,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:14,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:14,541 INFO L87 Difference]: Start difference. First operand 603 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:15,794 INFO L93 Difference]: Finished difference Result 1047 states and 1341 transitions. [2021-11-12 22:30:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:15,800 INFO L225 Difference]: With dead ends: 1047 [2021-11-12 22:30:15,800 INFO L226 Difference]: Without dead ends: 992 [2021-11-12 22:30:15,801 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 [2021-11-12 22:30:15,801 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 2449 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 743.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 924.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:15,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 2408 Invalid, 1969 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [66 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 924.06ms Time] [2021-11-12 22:30:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-12 22:30:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2021-11-12 22:30:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3287435456110155) internal successors, (772), 602 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 772 transitions. [2021-11-12 22:30:15,879 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 772 transitions. Word has length 94 [2021-11-12 22:30:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:15,879 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 772 transitions. [2021-11-12 22:30:15,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 772 transitions. [2021-11-12 22:30:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:15,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:15,881 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] [2021-11-12 22:30:15,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-12 22:30:15,881 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -210482352, now seen corresponding path program 1 times [2021-11-12 22:30:15,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:15,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637812608] [2021-11-12 22:30:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:15,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:16,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:16,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637812608] [2021-11-12 22:30:16,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637812608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:16,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:16,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:30:16,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912091540] [2021-11-12 22:30:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:16,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:30:16,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:30:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:30:16,082 INFO L87 Difference]: Start difference. First operand 603 states and 772 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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) [2021-11-12 22:30:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:18,618 INFO L93 Difference]: Finished difference Result 1409 states and 1822 transitions. [2021-11-12 22:30:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 22:30:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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 [2021-11-12 22:30:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:18,624 INFO L225 Difference]: With dead ends: 1409 [2021-11-12 22:30:18,625 INFO L226 Difference]: Without dead ends: 1328 [2021-11-12 22:30:18,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:30:18,626 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 5037 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1321.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5037 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.91ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1605.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:18,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5037 Valid, 3174 Invalid, 3271 Unknown, 0 Unchecked, 14.91ms Time], IncrementalHoareTripleChecker [518 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 1605.80ms Time] [2021-11-12 22:30:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-12 22:30:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 607. [2021-11-12 22:30:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3264957264957264) internal successors, (776), 606 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 776 transitions. [2021-11-12 22:30:18,710 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 776 transitions. Word has length 94 [2021-11-12 22:30:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:18,711 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 776 transitions. [2021-11-12 22:30:18,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 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) [2021-11-12 22:30:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 776 transitions. [2021-11-12 22:30:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:18,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:18,712 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] [2021-11-12 22:30:18,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-12 22:30:18,713 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -619327580, now seen corresponding path program 1 times [2021-11-12 22:30:18,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:18,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652490347] [2021-11-12 22:30:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:18,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:18,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:18,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652490347] [2021-11-12 22:30:18,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652490347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:18,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:18,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:18,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306933103] [2021-11-12 22:30:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:18,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:18,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:18,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:18,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:18,860 INFO L87 Difference]: Start difference. First operand 607 states and 776 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:20,161 INFO L93 Difference]: Finished difference Result 1055 states and 1348 transitions. [2021-11-12 22:30:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:20,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:20,164 INFO L225 Difference]: With dead ends: 1055 [2021-11-12 22:30:20,164 INFO L226 Difference]: Without dead ends: 996 [2021-11-12 22:30:20,165 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 [2021-11-12 22:30:20,165 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1733 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 798.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.11ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 983.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:20,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 2703 Invalid, 2209 Unknown, 0 Unchecked, 8.11ms Time], IncrementalHoareTripleChecker [47 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 983.72ms Time] [2021-11-12 22:30:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-12 22:30:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2021-11-12 22:30:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3247863247863247) internal successors, (775), 606 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 775 transitions. [2021-11-12 22:30:20,255 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 775 transitions. Word has length 94 [2021-11-12 22:30:20,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:20,256 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 775 transitions. [2021-11-12 22:30:20,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 775 transitions. [2021-11-12 22:30:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:20,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:20,257 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] [2021-11-12 22:30:20,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-12 22:30:20,258 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1893494246, now seen corresponding path program 1 times [2021-11-12 22:30:20,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:20,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099654525] [2021-11-12 22:30:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:20,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:20,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:20,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099654525] [2021-11-12 22:30:20,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099654525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:20,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:20,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075067248] [2021-11-12 22:30:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:20,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:20,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:20,369 INFO L87 Difference]: Start difference. First operand 607 states and 775 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:21,846 INFO L93 Difference]: Finished difference Result 1051 states and 1343 transitions. [2021-11-12 22:30:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:21,850 INFO L225 Difference]: With dead ends: 1051 [2021-11-12 22:30:21,850 INFO L226 Difference]: Without dead ends: 996 [2021-11-12 22:30:21,851 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 [2021-11-12 22:30:21,852 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1719 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 902.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1105.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:21,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 2643 Invalid, 2212 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [47 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 1105.32ms Time] [2021-11-12 22:30:21,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-12 22:30:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2021-11-12 22:30:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.323076923076923) internal successors, (774), 606 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 774 transitions. [2021-11-12 22:30:21,948 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 774 transitions. Word has length 94 [2021-11-12 22:30:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:21,949 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 774 transitions. [2021-11-12 22:30:21,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 774 transitions. [2021-11-12 22:30:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:21,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:21,950 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] [2021-11-12 22:30:21,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-12 22:30:21,950 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1723188937, now seen corresponding path program 1 times [2021-11-12 22:30:21,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:21,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027084676] [2021-11-12 22:30:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:21,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:22,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027084676] [2021-11-12 22:30:22,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027084676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:22,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:22,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:22,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515940627] [2021-11-12 22:30:22,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:22,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:22,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:22,066 INFO L87 Difference]: Start difference. First operand 607 states and 774 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:23,428 INFO L93 Difference]: Finished difference Result 1049 states and 1339 transitions. [2021-11-12 22:30:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:23,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:23,430 INFO L225 Difference]: With dead ends: 1049 [2021-11-12 22:30:23,430 INFO L226 Difference]: Without dead ends: 996 [2021-11-12 22:30:23,430 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 [2021-11-12 22:30:23,431 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 1737 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 848.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.17ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1038.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:23,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 2852 Invalid, 2322 Unknown, 0 Unchecked, 8.17ms Time], IncrementalHoareTripleChecker [48 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 1038.90ms Time] [2021-11-12 22:30:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-12 22:30:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2021-11-12 22:30:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3213675213675213) internal successors, (773), 606 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 773 transitions. [2021-11-12 22:30:23,518 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 773 transitions. Word has length 94 [2021-11-12 22:30:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:23,519 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 773 transitions. [2021-11-12 22:30:23,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 773 transitions. [2021-11-12 22:30:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:23,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:23,520 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] [2021-11-12 22:30:23,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-12 22:30:23,521 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -211515308, now seen corresponding path program 1 times [2021-11-12 22:30:23,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:23,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551465138] [2021-11-12 22:30:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:23,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:23,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:23,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551465138] [2021-11-12 22:30:23,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551465138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:23,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:23,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:23,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982212104] [2021-11-12 22:30:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:23,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:23,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:23,641 INFO L87 Difference]: Start difference. First operand 607 states and 773 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:24,875 INFO L93 Difference]: Finished difference Result 1055 states and 1343 transitions. [2021-11-12 22:30:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:24,877 INFO L225 Difference]: With dead ends: 1055 [2021-11-12 22:30:24,877 INFO L226 Difference]: Without dead ends: 996 [2021-11-12 22:30:24,878 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 [2021-11-12 22:30:24,878 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 2404 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 736.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 907.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:24,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 2411 Invalid, 2019 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [64 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 907.55ms Time] [2021-11-12 22:30:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-12 22:30:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2021-11-12 22:30:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.3196581196581196) internal successors, (772), 606 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 772 transitions. [2021-11-12 22:30:24,969 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 772 transitions. Word has length 94 [2021-11-12 22:30:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:24,970 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 772 transitions. [2021-11-12 22:30:24,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 772 transitions. [2021-11-12 22:30:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-12 22:30:24,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:24,972 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] [2021-11-12 22:30:24,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-12 22:30:24,972 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2062930942, now seen corresponding path program 1 times [2021-11-12 22:30:24,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:24,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912851845] [2021-11-12 22:30:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:24,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:25,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:25,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912851845] [2021-11-12 22:30:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912851845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:25,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:25,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:25,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760959752] [2021-11-12 22:30:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:25,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:25,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:25,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:25,094 INFO L87 Difference]: Start difference. First operand 607 states and 772 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:26,533 INFO L93 Difference]: Finished difference Result 1051 states and 1338 transitions. [2021-11-12 22:30:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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 [2021-11-12 22:30:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:26,536 INFO L225 Difference]: With dead ends: 1051 [2021-11-12 22:30:26,536 INFO L226 Difference]: Without dead ends: 996 [2021-11-12 22:30:26,536 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 [2021-11-12 22:30:26,537 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1721 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 882.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.83ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1079.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 2870 Invalid, 2310 Unknown, 0 Unchecked, 8.83ms Time], IncrementalHoareTripleChecker [48 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1079.79ms Time] [2021-11-12 22:30:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-12 22:30:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 607. [2021-11-12 22:30:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 585 states have (on average 1.317948717948718) internal successors, (771), 606 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 771 transitions. [2021-11-12 22:30:26,626 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 771 transitions. Word has length 94 [2021-11-12 22:30:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:26,626 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 771 transitions. [2021-11-12 22:30:26,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 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) [2021-11-12 22:30:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 771 transitions. [2021-11-12 22:30:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 22:30:26,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:26,628 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] [2021-11-12 22:30:26,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-12 22:30:26,629 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -853175475, now seen corresponding path program 1 times [2021-11-12 22:30:26,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:26,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100200064] [2021-11-12 22:30:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:26,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:26,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:26,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100200064] [2021-11-12 22:30:26,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100200064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:26,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:26,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:26,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063653650] [2021-11-12 22:30:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:26,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:26,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:26,738 INFO L87 Difference]: Start difference. First operand 607 states and 771 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:28,367 INFO L93 Difference]: Finished difference Result 1085 states and 1383 transitions. [2021-11-12 22:30:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:28,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-12 22:30:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:28,369 INFO L225 Difference]: With dead ends: 1085 [2021-11-12 22:30:28,369 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 22:30:28,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:30:28,370 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 2596 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.08ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1194.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:28,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2596 Valid, 2645 Invalid, 2224 Unknown, 0 Unchecked, 12.08ms Time], IncrementalHoareTripleChecker [47 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1194.86ms Time] [2021-11-12 22:30:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 22:30:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 603. [2021-11-12 22:30:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 581 states have (on average 1.3184165232358003) internal successors, (766), 602 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 766 transitions. [2021-11-12 22:30:28,459 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 766 transitions. Word has length 95 [2021-11-12 22:30:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:28,459 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 766 transitions. [2021-11-12 22:30:28,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 766 transitions. [2021-11-12 22:30:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 22:30:28,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:28,460 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] [2021-11-12 22:30:28,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-12 22:30:28,461 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1662722339, now seen corresponding path program 1 times [2021-11-12 22:30:28,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:28,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731728565] [2021-11-12 22:30:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:28,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:28,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:28,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731728565] [2021-11-12 22:30:28,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731728565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:28,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:28,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:28,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018089328] [2021-11-12 22:30:28,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:28,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:28,582 INFO L87 Difference]: Start difference. First operand 603 states and 766 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:29,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:29,950 INFO L93 Difference]: Finished difference Result 1085 states and 1384 transitions. [2021-11-12 22:30:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-12 22:30:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:29,952 INFO L225 Difference]: With dead ends: 1085 [2021-11-12 22:30:29,952 INFO L226 Difference]: Without dead ends: 1004 [2021-11-12 22:30:29,952 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 [2021-11-12 22:30:29,953 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 2504 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 808.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1001.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:29,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 2745 Invalid, 2286 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [47 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1001.80ms Time] [2021-11-12 22:30:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-12 22:30:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 599. [2021-11-12 22:30:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 577 states have (on average 1.318890814558059) internal successors, (761), 598 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 761 transitions. [2021-11-12 22:30:30,041 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 761 transitions. Word has length 95 [2021-11-12 22:30:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:30,041 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 761 transitions. [2021-11-12 22:30:30,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 761 transitions. [2021-11-12 22:30:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-12 22:30:30,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:30,043 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] [2021-11-12 22:30:30,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-12 22:30:30,043 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2062398610, now seen corresponding path program 1 times [2021-11-12 22:30:30,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:30,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91207779] [2021-11-12 22:30:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:30,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:30,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:30,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91207779] [2021-11-12 22:30:30,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91207779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:30,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-12 22:30:30,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808827480] [2021-11-12 22:30:30,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:30,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:30:30,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:30,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:30:30,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:30:30,370 INFO L87 Difference]: Start difference. First operand 599 states and 761 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:31,644 INFO L93 Difference]: Finished difference Result 1235 states and 1517 transitions. [2021-11-12 22:30:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:30:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-12 22:30:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:31,647 INFO L225 Difference]: With dead ends: 1235 [2021-11-12 22:30:31,647 INFO L226 Difference]: Without dead ends: 979 [2021-11-12 22:30:31,648 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 [2021-11-12 22:30:31,649 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 2774 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 486.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.25ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 571.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:31,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 2512 Invalid, 683 Unknown, 0 Unchecked, 12.25ms Time], IncrementalHoareTripleChecker [88 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 571.35ms Time] [2021-11-12 22:30:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-12 22:30:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 390. [2021-11-12 22:30:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2834224598930482) internal successors, (480), 389 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 480 transitions. [2021-11-12 22:30:31,760 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 480 transitions. Word has length 95 [2021-11-12 22:30:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:31,761 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 480 transitions. [2021-11-12 22:30:31,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 480 transitions. [2021-11-12 22:30:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:31,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:31,762 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] [2021-11-12 22:30:31,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-12 22:30:31,762 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1766740068, now seen corresponding path program 1 times [2021-11-12 22:30:31,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:31,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014805666] [2021-11-12 22:30:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:31,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:31,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:31,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014805666] [2021-11-12 22:30:31,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014805666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:31,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:31,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:31,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83651269] [2021-11-12 22:30:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:31,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:31,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:31,915 INFO L87 Difference]: Start difference. First operand 390 states and 480 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:32,948 INFO L93 Difference]: Finished difference Result 705 states and 872 transitions. [2021-11-12 22:30:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:32,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:32,949 INFO L225 Difference]: With dead ends: 705 [2021-11-12 22:30:32,950 INFO L226 Difference]: Without dead ends: 656 [2021-11-12 22:30:32,950 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 [2021-11-12 22:30:32,951 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1573 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 574.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.56ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 709.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:32,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 1731 Invalid, 1516 Unknown, 0 Unchecked, 6.56ms Time], IncrementalHoareTripleChecker [65 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 709.43ms Time] [2021-11-12 22:30:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-12 22:30:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 390. [2021-11-12 22:30:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2807486631016043) internal successors, (479), 389 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 479 transitions. [2021-11-12 22:30:33,032 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 479 transitions. Word has length 96 [2021-11-12 22:30:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:33,033 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 479 transitions. [2021-11-12 22:30:33,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 479 transitions. [2021-11-12 22:30:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:33,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:33,034 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] [2021-11-12 22:30:33,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-12 22:30:33,034 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash 500756844, now seen corresponding path program 1 times [2021-11-12 22:30:33,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:33,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255399015] [2021-11-12 22:30:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:33,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:33,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:33,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255399015] [2021-11-12 22:30:33,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255399015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:33,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:33,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449251187] [2021-11-12 22:30:33,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:33,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:33,157 INFO L87 Difference]: Start difference. First operand 390 states and 479 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:34,267 INFO L93 Difference]: Finished difference Result 708 states and 874 transitions. [2021-11-12 22:30:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:34,269 INFO L225 Difference]: With dead ends: 708 [2021-11-12 22:30:34,270 INFO L226 Difference]: Without dead ends: 656 [2021-11-12 22:30:34,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:30:34,271 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1774 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 574.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 701.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:34,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 1391 Invalid, 1310 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [90 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 701.21ms Time] [2021-11-12 22:30:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-12 22:30:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 390. [2021-11-12 22:30:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2780748663101604) internal successors, (478), 389 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 478 transitions. [2021-11-12 22:30:34,366 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 478 transitions. Word has length 96 [2021-11-12 22:30:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:34,367 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 478 transitions. [2021-11-12 22:30:34,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 478 transitions. [2021-11-12 22:30:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:34,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:34,368 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] [2021-11-12 22:30:34,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-12 22:30:34,368 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1255893419, now seen corresponding path program 1 times [2021-11-12 22:30:34,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:34,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970639490] [2021-11-12 22:30:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:34,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:34,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:34,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970639490] [2021-11-12 22:30:34,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970639490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:34,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:34,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:34,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792953296] [2021-11-12 22:30:34,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:34,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:34,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:34,491 INFO L87 Difference]: Start difference. First operand 390 states and 478 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:35,842 INFO L93 Difference]: Finished difference Result 708 states and 872 transitions. [2021-11-12 22:30:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:35,844 INFO L225 Difference]: With dead ends: 708 [2021-11-12 22:30:35,844 INFO L226 Difference]: Without dead ends: 656 [2021-11-12 22:30:35,844 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 [2021-11-12 22:30:35,845 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1561 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 717.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.87ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 873.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:35,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 1676 Invalid, 1418 Unknown, 0 Unchecked, 8.87ms Time], IncrementalHoareTripleChecker [66 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 873.09ms Time] [2021-11-12 22:30:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-12 22:30:35,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 390. [2021-11-12 22:30:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2754010695187166) internal successors, (477), 389 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 477 transitions. [2021-11-12 22:30:35,922 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 477 transitions. Word has length 96 [2021-11-12 22:30:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:35,923 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 477 transitions. [2021-11-12 22:30:35,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 477 transitions. [2021-11-12 22:30:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:35,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:35,924 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] [2021-11-12 22:30:35,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-12 22:30:35,924 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1126876775, now seen corresponding path program 1 times [2021-11-12 22:30:35,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:35,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666263791] [2021-11-12 22:30:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:35,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:36,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:36,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666263791] [2021-11-12 22:30:36,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666263791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:36,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:36,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:36,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682146387] [2021-11-12 22:30:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:36,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:36,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:36,040 INFO L87 Difference]: Start difference. First operand 390 states and 477 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:37,068 INFO L93 Difference]: Finished difference Result 736 states and 912 transitions. [2021-11-12 22:30:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:37,070 INFO L225 Difference]: With dead ends: 736 [2021-11-12 22:30:37,070 INFO L226 Difference]: Without dead ends: 672 [2021-11-12 22:30:37,070 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 [2021-11-12 22:30:37,071 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 1117 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 555.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 682.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:37,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 1773 Invalid, 1435 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [27 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 682.81ms Time] [2021-11-12 22:30:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-12 22:30:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 390. [2021-11-12 22:30:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2727272727272727) internal successors, (476), 389 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 476 transitions. [2021-11-12 22:30:37,152 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 476 transitions. Word has length 96 [2021-11-12 22:30:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:37,152 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 476 transitions. [2021-11-12 22:30:37,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 476 transitions. [2021-11-12 22:30:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:37,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:37,154 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] [2021-11-12 22:30:37,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-12 22:30:37,154 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash 443260260, now seen corresponding path program 1 times [2021-11-12 22:30:37,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:37,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055135308] [2021-11-12 22:30:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:37,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:37,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:37,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055135308] [2021-11-12 22:30:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055135308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:37,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:37,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:37,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858182516] [2021-11-12 22:30:37,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:37,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:37,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:37,273 INFO L87 Difference]: Start difference. First operand 390 states and 476 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:38,325 INFO L93 Difference]: Finished difference Result 708 states and 870 transitions. [2021-11-12 22:30:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:38,327 INFO L225 Difference]: With dead ends: 708 [2021-11-12 22:30:38,327 INFO L226 Difference]: Without dead ends: 656 [2021-11-12 22:30:38,327 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 [2021-11-12 22:30:38,327 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1553 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 569.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 697.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:38,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 1732 Invalid, 1430 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [66 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 697.38ms Time] [2021-11-12 22:30:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-12 22:30:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 390. [2021-11-12 22:30:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2700534759358288) internal successors, (475), 389 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 475 transitions. [2021-11-12 22:30:38,412 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 475 transitions. Word has length 96 [2021-11-12 22:30:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:38,412 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 475 transitions. [2021-11-12 22:30:38,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 475 transitions. [2021-11-12 22:30:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:38,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:38,413 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] [2021-11-12 22:30:38,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-12 22:30:38,414 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1939509934, now seen corresponding path program 1 times [2021-11-12 22:30:38,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:38,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641928013] [2021-11-12 22:30:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:38,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:38,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:38,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641928013] [2021-11-12 22:30:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641928013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:38,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:38,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18613875] [2021-11-12 22:30:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:38,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:38,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:38,515 INFO L87 Difference]: Start difference. First operand 390 states and 475 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:39,438 INFO L93 Difference]: Finished difference Result 736 states and 909 transitions. [2021-11-12 22:30:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:39,440 INFO L225 Difference]: With dead ends: 736 [2021-11-12 22:30:39,440 INFO L226 Difference]: Without dead ends: 672 [2021-11-12 22:30:39,441 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 [2021-11-12 22:30:39,441 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 1554 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 470.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 582.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:39,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 1618 Invalid, 1228 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [38 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 582.04ms Time] [2021-11-12 22:30:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-12 22:30:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 390. [2021-11-12 22:30:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.267379679144385) internal successors, (474), 389 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 474 transitions. [2021-11-12 22:30:39,537 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 474 transitions. Word has length 96 [2021-11-12 22:30:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 474 transitions. [2021-11-12 22:30:39,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 474 transitions. [2021-11-12 22:30:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:39,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:39,540 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] [2021-11-12 22:30:39,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-12 22:30:39,540 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1544761606, now seen corresponding path program 1 times [2021-11-12 22:30:39,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:39,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029241025] [2021-11-12 22:30:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:39,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:39,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:39,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029241025] [2021-11-12 22:30:39,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029241025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:39,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:39,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-12 22:30:39,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098059654] [2021-11-12 22:30:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:39,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:30:39,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:39,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:30:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:30:39,717 INFO L87 Difference]: Start difference. First operand 390 states and 474 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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) [2021-11-12 22:30:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:41,909 INFO L93 Difference]: Finished difference Result 1090 states and 1372 transitions. [2021-11-12 22:30:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 22:30:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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 [2021-11-12 22:30:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:41,912 INFO L225 Difference]: With dead ends: 1090 [2021-11-12 22:30:41,912 INFO L226 Difference]: Without dead ends: 1003 [2021-11-12 22:30:41,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:30:41,923 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 3161 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 964.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.55ms SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1179.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:41,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3161 Valid, 2015 Invalid, 2151 Unknown, 0 Unchecked, 19.55ms Time], IncrementalHoareTripleChecker [314 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1179.73ms Time] [2021-11-12 22:30:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-12 22:30:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 394. [2021-11-12 22:30:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 393 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 478 transitions. [2021-11-12 22:30:42,081 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 478 transitions. Word has length 96 [2021-11-12 22:30:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:42,083 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 478 transitions. [2021-11-12 22:30:42,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 10 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) [2021-11-12 22:30:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 478 transitions. [2021-11-12 22:30:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:42,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:42,085 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] [2021-11-12 22:30:42,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-12 22:30:42,085 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -52113932, now seen corresponding path program 1 times [2021-11-12 22:30:42,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:42,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103480520] [2021-11-12 22:30:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:42,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:42,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103480520] [2021-11-12 22:30:42,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103480520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:42,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:42,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:42,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290726523] [2021-11-12 22:30:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:42,249 INFO L87 Difference]: Start difference. First operand 394 states and 478 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:43,322 INFO L93 Difference]: Finished difference Result 707 states and 867 transitions. [2021-11-12 22:30:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:43,324 INFO L225 Difference]: With dead ends: 707 [2021-11-12 22:30:43,324 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:43,324 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 [2021-11-12 22:30:43,324 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 1580 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 568.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.26ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 705.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:43,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 1843 Invalid, 1522 Unknown, 0 Unchecked, 6.26ms Time], IncrementalHoareTripleChecker [65 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 705.82ms Time] [2021-11-12 22:30:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2619047619047619) internal successors, (477), 393 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 477 transitions. [2021-11-12 22:30:43,425 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 477 transitions. Word has length 96 [2021-11-12 22:30:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:43,425 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 477 transitions. [2021-11-12 22:30:43,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 477 transitions. [2021-11-12 22:30:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:43,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:43,426 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] [2021-11-12 22:30:43,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-12 22:30:43,427 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1952926503, now seen corresponding path program 1 times [2021-11-12 22:30:43,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:43,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781119100] [2021-11-12 22:30:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:43,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:43,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:43,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781119100] [2021-11-12 22:30:43,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781119100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:43,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:43,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:43,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323391595] [2021-11-12 22:30:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:43,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:43,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:43,543 INFO L87 Difference]: Start difference. First operand 394 states and 477 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:44,843 INFO L93 Difference]: Finished difference Result 709 states and 868 transitions. [2021-11-12 22:30:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:44,844 INFO L225 Difference]: With dead ends: 709 [2021-11-12 22:30:44,844 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:44,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:30:44,846 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1171 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 649.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 803.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:44,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1495 Invalid, 1295 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [57 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 803.18ms Time] [2021-11-12 22:30:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2592592592592593) internal successors, (476), 393 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2021-11-12 22:30:44,936 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 96 [2021-11-12 22:30:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:44,936 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2021-11-12 22:30:44,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2021-11-12 22:30:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:44,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:44,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-12 22:30:44,938 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1693346717, now seen corresponding path program 1 times [2021-11-12 22:30:44,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:44,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133607298] [2021-11-12 22:30:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:44,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:45,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:45,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133607298] [2021-11-12 22:30:45,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133607298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:45,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:45,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:45,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977462507] [2021-11-12 22:30:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:45,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:45,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:45,073 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:46,199 INFO L93 Difference]: Finished difference Result 709 states and 866 transitions. [2021-11-12 22:30:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:46,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:46,200 INFO L225 Difference]: With dead ends: 709 [2021-11-12 22:30:46,201 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:46,201 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 [2021-11-12 22:30:46,202 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 1545 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 557.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 711.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:46,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1767 Invalid, 1425 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [66 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 711.58ms Time] [2021-11-12 22:30:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2566137566137565) internal successors, (475), 393 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 475 transitions. [2021-11-12 22:30:46,298 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 475 transitions. Word has length 96 [2021-11-12 22:30:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:46,298 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 475 transitions. [2021-11-12 22:30:46,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 475 transitions. [2021-11-12 22:30:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:46,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:46,299 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] [2021-11-12 22:30:46,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-12 22:30:46,299 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash 427743812, now seen corresponding path program 1 times [2021-11-12 22:30:46,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:46,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444308458] [2021-11-12 22:30:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:46,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:46,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:46,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444308458] [2021-11-12 22:30:46,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444308458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:46,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:46,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:46,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767136443] [2021-11-12 22:30:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:46,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:46,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:46,414 INFO L87 Difference]: Start difference. First operand 394 states and 475 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:47,446 INFO L93 Difference]: Finished difference Result 665 states and 805 transitions. [2021-11-12 22:30:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:47,448 INFO L225 Difference]: With dead ends: 665 [2021-11-12 22:30:47,448 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:47,449 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 [2021-11-12 22:30:47,449 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1673 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 630.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:47,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 1497 Invalid, 1312 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [86 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 630.10ms Time] [2021-11-12 22:30:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.253968253968254) internal successors, (474), 393 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 474 transitions. [2021-11-12 22:30:47,536 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 474 transitions. Word has length 96 [2021-11-12 22:30:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:47,536 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 474 transitions. [2021-11-12 22:30:47,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 474 transitions. [2021-11-12 22:30:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:47,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:47,537 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] [2021-11-12 22:30:47,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-12 22:30:47,538 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:47,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:47,538 INFO L85 PathProgramCache]: Analyzing trace with hash -375995292, now seen corresponding path program 1 times [2021-11-12 22:30:47,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:47,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451568088] [2021-11-12 22:30:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:47,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:47,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:47,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451568088] [2021-11-12 22:30:47,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451568088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:47,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:47,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:47,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086495936] [2021-11-12 22:30:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:47,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:47,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:47,673 INFO L87 Difference]: Start difference. First operand 394 states and 474 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:48,893 INFO L93 Difference]: Finished difference Result 665 states and 803 transitions. [2021-11-12 22:30:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:48,895 INFO L225 Difference]: With dead ends: 665 [2021-11-12 22:30:48,895 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:48,895 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 [2021-11-12 22:30:48,896 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1532 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 645.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.90ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 786.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:48,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1787 Invalid, 1414 Unknown, 0 Unchecked, 7.90ms Time], IncrementalHoareTripleChecker [66 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 786.35ms Time] [2021-11-12 22:30:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2513227513227514) internal successors, (473), 393 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 473 transitions. [2021-11-12 22:30:48,983 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 473 transitions. Word has length 96 [2021-11-12 22:30:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:48,983 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 473 transitions. [2021-11-12 22:30:48,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 473 transitions. [2021-11-12 22:30:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:48,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:48,984 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] [2021-11-12 22:30:48,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-12 22:30:48,984 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1536201810, now seen corresponding path program 1 times [2021-11-12 22:30:48,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:48,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778321706] [2021-11-12 22:30:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:48,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:49,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:49,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778321706] [2021-11-12 22:30:49,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778321706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:49,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:49,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:49,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745084987] [2021-11-12 22:30:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:49,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:49,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:49,099 INFO L87 Difference]: Start difference. First operand 394 states and 473 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:50,242 INFO L93 Difference]: Finished difference Result 693 states and 841 transitions. [2021-11-12 22:30:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:50,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:50,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:50,244 INFO L225 Difference]: With dead ends: 693 [2021-11-12 22:30:50,244 INFO L226 Difference]: Without dead ends: 676 [2021-11-12 22:30:50,245 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 [2021-11-12 22:30:50,246 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 1500 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 578.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 710.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:50,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1500 Valid, 1614 Invalid, 1261 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [36 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 710.56ms Time] [2021-11-12 22:30:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-12 22:30:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 394. [2021-11-12 22:30:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2486772486772486) internal successors, (472), 393 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 472 transitions. [2021-11-12 22:30:50,392 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 472 transitions. Word has length 96 [2021-11-12 22:30:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:50,393 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 472 transitions. [2021-11-12 22:30:50,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 472 transitions. [2021-11-12 22:30:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:50,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:50,394 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] [2021-11-12 22:30:50,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-12 22:30:50,394 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash 134588212, now seen corresponding path program 1 times [2021-11-12 22:30:50,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:50,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520691467] [2021-11-12 22:30:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:50,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:50,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:50,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520691467] [2021-11-12 22:30:50,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520691467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:50,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:50,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:50,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801523650] [2021-11-12 22:30:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:50,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:50,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:50,508 INFO L87 Difference]: Start difference. First operand 394 states and 472 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:51,578 INFO L93 Difference]: Finished difference Result 709 states and 861 transitions. [2021-11-12 22:30:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:30:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:51,580 INFO L225 Difference]: With dead ends: 709 [2021-11-12 22:30:51,580 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:51,581 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 [2021-11-12 22:30:51,581 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 1531 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 542.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 682.08ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:51,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1818 Invalid, 1423 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [66 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 682.08ms Time] [2021-11-12 22:30:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.246031746031746) internal successors, (471), 393 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 471 transitions. [2021-11-12 22:30:51,673 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 471 transitions. Word has length 96 [2021-11-12 22:30:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:51,674 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 471 transitions. [2021-11-12 22:30:51,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 471 transitions. [2021-11-12 22:30:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:30:51,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:51,675 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] [2021-11-12 22:30:51,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-12 22:30:51,675 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1131131867, now seen corresponding path program 1 times [2021-11-12 22:30:51,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:51,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685163194] [2021-11-12 22:30:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:51,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:51,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:51,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685163194] [2021-11-12 22:30:51,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685163194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:51,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:51,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:51,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604709144] [2021-11-12 22:30:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:51,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:51,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:51,782 INFO L87 Difference]: Start difference. First operand 394 states and 471 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:52,826 INFO L93 Difference]: Finished difference Result 665 states and 800 transitions. [2021-11-12 22:30:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:52,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-12 22:30:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:52,829 INFO L225 Difference]: With dead ends: 665 [2021-11-12 22:30:52,829 INFO L226 Difference]: Without dead ends: 660 [2021-11-12 22:30:52,829 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 [2021-11-12 22:30:52,830 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1625 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 627.59ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:52,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1545 Invalid, 1313 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [84 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 627.59ms Time] [2021-11-12 22:30:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-12 22:30:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2021-11-12 22:30:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 378 states have (on average 1.2433862433862435) internal successors, (470), 393 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 470 transitions. [2021-11-12 22:30:52,935 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 470 transitions. Word has length 96 [2021-11-12 22:30:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:52,935 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 470 transitions. [2021-11-12 22:30:52,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 470 transitions. [2021-11-12 22:30:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 22:30:52,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:52,936 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] [2021-11-12 22:30:52,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-12 22:30:52,937 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash -308092620, now seen corresponding path program 1 times [2021-11-12 22:30:52,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:52,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016677993] [2021-11-12 22:30:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:52,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:53,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:53,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016677993] [2021-11-12 22:30:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016677993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:53,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:53,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:30:53,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802230447] [2021-11-12 22:30:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:53,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:53,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:53,036 INFO L87 Difference]: Start difference. First operand 394 states and 470 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:54,066 INFO L93 Difference]: Finished difference Result 767 states and 936 transitions. [2021-11-12 22:30:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:30:54,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-12 22:30:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:54,068 INFO L225 Difference]: With dead ends: 767 [2021-11-12 22:30:54,068 INFO L226 Difference]: Without dead ends: 680 [2021-11-12 22:30:54,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:30:54,069 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 1169 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 508.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 622.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:54,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 1686 Invalid, 1325 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [21 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 622.33ms Time] [2021-11-12 22:30:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-12 22:30:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 390. [2021-11-12 22:30:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 374 states have (on average 1.2433155080213905) internal successors, (465), 389 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 465 transitions. [2021-11-12 22:30:54,157 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 465 transitions. Word has length 97 [2021-11-12 22:30:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:54,157 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 465 transitions. [2021-11-12 22:30:54,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 465 transitions. [2021-11-12 22:30:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:30:54,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:54,158 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, 1] [2021-11-12 22:30:54,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-12 22:30:54,158 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash 236768823, now seen corresponding path program 1 times [2021-11-12 22:30:54,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569584632] [2021-11-12 22:30:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:54,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:54,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:54,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569584632] [2021-11-12 22:30:54,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569584632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:54,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:54,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:30:54,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890027107] [2021-11-12 22:30:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:54,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:30:54,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:30:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:30:54,506 INFO L87 Difference]: Start difference. First operand 390 states and 465 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:56,501 INFO L93 Difference]: Finished difference Result 1218 states and 1502 transitions. [2021-11-12 22:30:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 22:30:56,502 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-12 22:30:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:56,504 INFO L225 Difference]: With dead ends: 1218 [2021-11-12 22:30:56,504 INFO L226 Difference]: Without dead ends: 1147 [2021-11-12 22:30:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:30:56,505 INFO L933 BasicCegarLoop]: 1043 mSDtfsCounter, 2505 mSDsluCounter, 7494 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 606.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 8293 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.61ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 726.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:56,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 8293 Invalid, 1178 Unknown, 0 Unchecked, 15.61ms Time], IncrementalHoareTripleChecker [46 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 726.13ms Time] [2021-11-12 22:30:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-12 22:30:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 366. [2021-11-12 22:30:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 351 states have (on average 1.2364672364672364) internal successors, (434), 365 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 434 transitions. [2021-11-12 22:30:56,610 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 434 transitions. Word has length 98 [2021-11-12 22:30:56,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:56,610 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 434 transitions. [2021-11-12 22:30:56,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 434 transitions. [2021-11-12 22:30:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:30:56,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:56,611 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, 1] [2021-11-12 22:30:56,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-12 22:30:56,611 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1830728152, now seen corresponding path program 1 times [2021-11-12 22:30:56,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:56,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272641228] [2021-11-12 22:30:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:56,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:56,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:56,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272641228] [2021-11-12 22:30:56,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272641228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:56,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:56,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:30:56,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673397358] [2021-11-12 22:30:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:56,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:30:56,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:30:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:30:56,961 INFO L87 Difference]: Start difference. First operand 366 states and 434 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:58,725 INFO L93 Difference]: Finished difference Result 1147 states and 1423 transitions. [2021-11-12 22:30:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 22:30:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-12 22:30:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:58,733 INFO L225 Difference]: With dead ends: 1147 [2021-11-12 22:30:58,734 INFO L226 Difference]: Without dead ends: 1061 [2021-11-12 22:30:58,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:30:58,735 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 2337 mSDsluCounter, 5627 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 6414 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.83ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 548.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:58,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 6414 Invalid, 854 Unknown, 0 Unchecked, 12.83ms Time], IncrementalHoareTripleChecker [29 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 548.01ms Time] [2021-11-12 22:30:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-11-12 22:30:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 327. [2021-11-12 22:30:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 315 states have (on average 1.2285714285714286) internal successors, (387), 326 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 387 transitions. [2021-11-12 22:30:58,904 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 387 transitions. Word has length 98 [2021-11-12 22:30:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:58,904 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 387 transitions. [2021-11-12 22:30:58,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 387 transitions. [2021-11-12 22:30:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:30:58,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:58,906 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, 1] [2021-11-12 22:30:58,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-12 22:30:58,906 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:30:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash 843370531, now seen corresponding path program 1 times [2021-11-12 22:30:58,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:30:58,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634267114] [2021-11-12 22:30:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:58,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:30:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:59,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:30:59,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634267114] [2021-11-12 22:30:59,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634267114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:59,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:59,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 22:30:59,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202768792] [2021-11-12 22:30:59,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:59,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:30:59,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:30:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:30:59,244 INFO L87 Difference]: Start difference. First operand 327 states and 387 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:00,402 INFO L93 Difference]: Finished difference Result 519 states and 617 transitions. [2021-11-12 22:31:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:31:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-12 22:31:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:00,404 INFO L225 Difference]: With dead ends: 519 [2021-11-12 22:31:00,404 INFO L226 Difference]: Without dead ends: 468 [2021-11-12 22:31:00,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:31:00,404 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1540 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 435.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 519.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:00,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 2050 Invalid, 951 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [73 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 519.79ms Time] [2021-11-12 22:31:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-12 22:31:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 323. [2021-11-12 22:31:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 312 states have (on average 1.2243589743589745) internal successors, (382), 322 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 382 transitions. [2021-11-12 22:31:00,521 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 382 transitions. Word has length 98 [2021-11-12 22:31:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:00,521 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 382 transitions. [2021-11-12 22:31:00,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 382 transitions. [2021-11-12 22:31:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:31:00,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:00,522 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:00,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-12 22:31:00,522 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1087150783, now seen corresponding path program 1 times [2021-11-12 22:31:00,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:00,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580984595] [2021-11-12 22:31:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:00,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:00,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:00,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580984595] [2021-11-12 22:31:00,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580984595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:00,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:00,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:31:00,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330795461] [2021-11-12 22:31:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:00,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:31:00,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:31:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:31:00,881 INFO L87 Difference]: Start difference. First operand 323 states and 382 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:02,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:02,702 INFO L93 Difference]: Finished difference Result 1071 states and 1324 transitions. [2021-11-12 22:31:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 22:31:02,703 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-12 22:31:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:02,704 INFO L225 Difference]: With dead ends: 1071 [2021-11-12 22:31:02,704 INFO L226 Difference]: Without dead ends: 991 [2021-11-12 22:31:02,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:31:02,705 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 1992 mSDsluCounter, 5799 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 498.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.44ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 614.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:02,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 6463 Invalid, 998 Unknown, 0 Unchecked, 12.44ms Time], IncrementalHoareTripleChecker [40 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 614.03ms Time] [2021-11-12 22:31:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-12 22:31:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 290. [2021-11-12 22:31:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 282 states have (on average 1.2127659574468086) internal successors, (342), 289 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 342 transitions. [2021-11-12 22:31:02,834 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 342 transitions. Word has length 98 [2021-11-12 22:31:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:02,835 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 342 transitions. [2021-11-12 22:31:02,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 342 transitions. [2021-11-12 22:31:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-12 22:31:02,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:02,836 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, 1] [2021-11-12 22:31:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-12 22:31:02,837 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -534371604, now seen corresponding path program 1 times [2021-11-12 22:31:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:02,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707232786] [2021-11-12 22:31:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:02,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:03,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:03,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707232786] [2021-11-12 22:31:03,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707232786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:03,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:03,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:31:03,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227282253] [2021-11-12 22:31:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:03,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:31:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:31:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:31:03,221 INFO L87 Difference]: Start difference. First operand 290 states and 342 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:05,041 INFO L93 Difference]: Finished difference Result 725 states and 893 transitions. [2021-11-12 22:31:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 22:31:05,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-12 22:31:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:05,044 INFO L225 Difference]: With dead ends: 725 [2021-11-12 22:31:05,044 INFO L226 Difference]: Without dead ends: 561 [2021-11-12 22:31:05,045 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 [2021-11-12 22:31:05,045 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1151 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.32ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 480.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:05,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 4237 Invalid, 676 Unknown, 0 Unchecked, 10.32ms Time], IncrementalHoareTripleChecker [18 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 480.90ms Time] [2021-11-12 22:31:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-12 22:31:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 173. [2021-11-12 22:31:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 172 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 198 transitions. [2021-11-12 22:31:05,143 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 198 transitions. Word has length 98 [2021-11-12 22:31:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:05,143 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 198 transitions. [2021-11-12 22:31:05,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 198 transitions. [2021-11-12 22:31:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 22:31:05,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:05,144 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, 1, 1] [2021-11-12 22:31:05,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-12 22:31:05,145 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:05,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1090193566, now seen corresponding path program 1 times [2021-11-12 22:31:05,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:05,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886508936] [2021-11-12 22:31:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:05,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:05,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:05,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886508936] [2021-11-12 22:31:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886508936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:05,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:05,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:31:05,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277668745] [2021-11-12 22:31:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:05,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:31:05,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:31:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:31:05,247 INFO L87 Difference]: Start difference. First operand 173 states and 198 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:05,708 INFO L93 Difference]: Finished difference Result 248 states and 289 transitions. [2021-11-12 22:31:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:31:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-12 22:31:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:05,709 INFO L225 Difference]: With dead ends: 248 [2021-11-12 22:31:05,709 INFO L226 Difference]: Without dead ends: 241 [2021-11-12 22:31:05,710 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 [2021-11-12 22:31:05,710 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 586 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:05,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 588 Invalid, 460 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 229.89ms Time] [2021-11-12 22:31:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-12 22:31:05,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 173. [2021-11-12 22:31:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 1.1588235294117648) internal successors, (197), 172 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2021-11-12 22:31:05,785 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 99 [2021-11-12 22:31:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:05,785 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2021-11-12 22:31:05,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2021-11-12 22:31:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 22:31:05,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:05,786 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, 1, 1] [2021-11-12 22:31:05,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-12 22:31:05,786 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1504976506, now seen corresponding path program 1 times [2021-11-12 22:31:05,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:05,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250046229] [2021-11-12 22:31:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:05,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:05,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:05,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250046229] [2021-11-12 22:31:05,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250046229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:05,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:05,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:31:05,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364300264] [2021-11-12 22:31:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:05,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:31:05,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:31:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:31:05,887 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:06,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:06,396 INFO L93 Difference]: Finished difference Result 324 states and 385 transitions. [2021-11-12 22:31:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:31:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-12 22:31:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:06,397 INFO L225 Difference]: With dead ends: 324 [2021-11-12 22:31:06,397 INFO L226 Difference]: Without dead ends: 259 [2021-11-12 22:31:06,398 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 [2021-11-12 22:31:06,398 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 680 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:06,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 553 Invalid, 464 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [11 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 239.28ms Time] [2021-11-12 22:31:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-12 22:31:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 173. [2021-11-12 22:31:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 196 transitions. [2021-11-12 22:31:06,501 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 196 transitions. Word has length 99 [2021-11-12 22:31:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:06,502 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 196 transitions. [2021-11-12 22:31:06,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 196 transitions. [2021-11-12 22:31:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:31:06,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:06,502 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, 1, 1, 1, 1] [2021-11-12 22:31:06,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-12 22:31:06,503 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1003979678, now seen corresponding path program 1 times [2021-11-12 22:31:06,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:06,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144653868] [2021-11-12 22:31:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:06,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:06,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:06,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144653868] [2021-11-12 22:31:06,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144653868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:06,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:06,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 22:31:06,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4233759] [2021-11-12 22:31:06,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:06,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:31:06,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:31:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:31:06,833 INFO L87 Difference]: Start difference. First operand 173 states and 196 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:07,848 INFO L93 Difference]: Finished difference Result 341 states and 412 transitions. [2021-11-12 22:31:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:31:07,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-12 22:31:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:07,849 INFO L225 Difference]: With dead ends: 341 [2021-11-12 22:31:07,849 INFO L226 Difference]: Without dead ends: 335 [2021-11-12 22:31:07,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:31:07,850 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 955 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:07,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 1824 Invalid, 476 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [19 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 286.13ms Time] [2021-11-12 22:31:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-12 22:31:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 167. [2021-11-12 22:31:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.1515151515151516) internal successors, (190), 166 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 190 transitions. [2021-11-12 22:31:07,933 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 190 transitions. Word has length 101 [2021-11-12 22:31:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:07,933 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 190 transitions. [2021-11-12 22:31:07,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 190 transitions. [2021-11-12 22:31:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-12 22:31:07,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:07,934 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, 1, 1, 1, 1] [2021-11-12 22:31:07,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-12 22:31:07,934 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1120059438, now seen corresponding path program 1 times [2021-11-12 22:31:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:07,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949230364] [2021-11-12 22:31:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:07,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:09,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:09,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949230364] [2021-11-12 22:31:09,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949230364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:09,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:09,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-12 22:31:09,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765286749] [2021-11-12 22:31:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:09,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-12 22:31:09,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-12 22:31:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-12 22:31:09,200 INFO L87 Difference]: Start difference. First operand 167 states and 190 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:15,083 INFO L93 Difference]: Finished difference Result 687 states and 826 transitions. [2021-11-12 22:31:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-12 22:31:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-12 22:31:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:15,085 INFO L225 Difference]: With dead ends: 687 [2021-11-12 22:31:15,085 INFO L226 Difference]: Without dead ends: 679 [2021-11-12 22:31:15,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2021-11-12 22:31:15,086 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1407 mSDsluCounter, 10346 mSDsCounter, 0 mSdLazyCounter, 5497 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2882.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 10687 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.56ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 5497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3373.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:15,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 10687 Invalid, 5552 Unknown, 0 Unchecked, 33.56ms Time], IncrementalHoareTripleChecker [55 Valid, 5497 Invalid, 0 Unknown, 0 Unchecked, 3373.84ms Time] [2021-11-12 22:31:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-12 22:31:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 191. [2021-11-12 22:31:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.1587301587301588) internal successors, (219), 190 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2021-11-12 22:31:15,255 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 101 [2021-11-12 22:31:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:15,255 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2021-11-12 22:31:15,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 31 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2021-11-12 22:31:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 22:31:15,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:15,257 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, 1, 1, 1, 1, 1] [2021-11-12 22:31:15,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-12 22:31:15,257 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:15,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1258225100, now seen corresponding path program 1 times [2021-11-12 22:31:15,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:15,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295389172] [2021-11-12 22:31:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:15,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:15,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:15,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295389172] [2021-11-12 22:31:15,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295389172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:15,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:15,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 22:31:15,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333651306] [2021-11-12 22:31:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:15,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:31:15,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:31:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:31:15,608 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:16,913 INFO L93 Difference]: Finished difference Result 471 states and 582 transitions. [2021-11-12 22:31:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 22:31:16,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-12 22:31:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:16,915 INFO L225 Difference]: With dead ends: 471 [2021-11-12 22:31:16,915 INFO L226 Difference]: Without dead ends: 456 [2021-11-12 22:31:16,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:31:16,915 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 981 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:16,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 2844 Invalid, 627 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [17 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 367.16ms Time] [2021-11-12 22:31:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-12 22:31:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 155. [2021-11-12 22:31:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 154 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2021-11-12 22:31:17,010 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 102 [2021-11-12 22:31:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:17,010 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2021-11-12 22:31:17,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2021-11-12 22:31:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 22:31:17,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:17,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:17,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-12 22:31:17,012 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:17,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -286309591, now seen corresponding path program 1 times [2021-11-12 22:31:17,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:17,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278081900] [2021-11-12 22:31:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:17,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:17,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:17,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278081900] [2021-11-12 22:31:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278081900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:17,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:17,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:17,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237489537] [2021-11-12 22:31:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:17,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:17,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:17,075 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:17,323 INFO L93 Difference]: Finished difference Result 249 states and 301 transitions. [2021-11-12 22:31:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:17,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-12 22:31:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:17,324 INFO L225 Difference]: With dead ends: 249 [2021-11-12 22:31:17,324 INFO L226 Difference]: Without dead ends: 202 [2021-11-12 22:31:17,324 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 [2021-11-12 22:31:17,325 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 72 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:17,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.43ms Time] [2021-11-12 22:31:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-12 22:31:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2021-11-12 22:31:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.1897435897435897) internal successors, (232), 195 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2021-11-12 22:31:17,482 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 119 [2021-11-12 22:31:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:17,482 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2021-11-12 22:31:17,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2021-11-12 22:31:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 22:31:17,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:17,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:17,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-12 22:31:17,484 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1978435067, now seen corresponding path program 1 times [2021-11-12 22:31:17,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:17,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250804437] [2021-11-12 22:31:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:17,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:17,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:17,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250804437] [2021-11-12 22:31:17,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250804437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:17,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:17,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:17,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383429605] [2021-11-12 22:31:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:17,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:17,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:17,564 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:17,921 INFO L93 Difference]: Finished difference Result 372 states and 466 transitions. [2021-11-12 22:31:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-12 22:31:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:17,923 INFO L225 Difference]: With dead ends: 372 [2021-11-12 22:31:17,923 INFO L226 Difference]: Without dead ends: 284 [2021-11-12 22:31:17,923 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 [2021-11-12 22:31:17,924 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 65 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:17,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 31.11ms Time] [2021-11-12 22:31:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-12 22:31:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2021-11-12 22:31:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.2307692307692308) internal successors, (336), 273 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 336 transitions. [2021-11-12 22:31:18,242 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 336 transitions. Word has length 122 [2021-11-12 22:31:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:18,243 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 336 transitions. [2021-11-12 22:31:18,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 336 transitions. [2021-11-12 22:31:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-12 22:31:18,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:18,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:18,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-12 22:31:18,244 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -727021523, now seen corresponding path program 1 times [2021-11-12 22:31:18,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:18,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519327811] [2021-11-12 22:31:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:18,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:18,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:18,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519327811] [2021-11-12 22:31:18,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519327811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:18,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:18,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:18,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225287471] [2021-11-12 22:31:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:18,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:18,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:18,299 INFO L87 Difference]: Start difference. First operand 274 states and 336 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:18,923 INFO L93 Difference]: Finished difference Result 606 states and 778 transitions. [2021-11-12 22:31:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-12 22:31:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:18,924 INFO L225 Difference]: With dead ends: 606 [2021-11-12 22:31:18,924 INFO L226 Difference]: Without dead ends: 440 [2021-11-12 22:31:18,925 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 [2021-11-12 22:31:18,925 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 58 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:18,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 31.05ms Time] [2021-11-12 22:31:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-12 22:31:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 422. [2021-11-12 22:31:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.2636579572446556) internal successors, (532), 421 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 532 transitions. [2021-11-12 22:31:19,482 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 532 transitions. Word has length 125 [2021-11-12 22:31:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:19,483 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 532 transitions. [2021-11-12 22:31:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 532 transitions. [2021-11-12 22:31:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-12 22:31:19,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:19,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-12 22:31:19,484 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1143347006, now seen corresponding path program 1 times [2021-11-12 22:31:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928330065] [2021-11-12 22:31:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:19,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:19,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:19,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928330065] [2021-11-12 22:31:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928330065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:19,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:19,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:19,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644461844] [2021-11-12 22:31:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:19,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:19,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:19,546 INFO L87 Difference]: Start difference. First operand 422 states and 532 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:20,649 INFO L93 Difference]: Finished difference Result 1050 states and 1366 transitions. [2021-11-12 22:31:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-12 22:31:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:20,651 INFO L225 Difference]: With dead ends: 1050 [2021-11-12 22:31:20,651 INFO L226 Difference]: Without dead ends: 736 [2021-11-12 22:31:20,651 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 [2021-11-12 22:31:20,655 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 51 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:20,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 30.68ms Time] [2021-11-12 22:31:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-12 22:31:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 702. [2021-11-12 22:31:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.2838801711840229) internal successors, (900), 701 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 900 transitions. [2021-11-12 22:31:21,698 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 900 transitions. Word has length 128 [2021-11-12 22:31:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:21,699 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 900 transitions. [2021-11-12 22:31:21,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 900 transitions. [2021-11-12 22:31:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-12 22:31:21,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:21,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:21,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-12 22:31:21,701 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1373569731, now seen corresponding path program 1 times [2021-11-12 22:31:21,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:21,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839467739] [2021-11-12 22:31:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:21,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:21,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839467739] [2021-11-12 22:31:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839467739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:21,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:21,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:21,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057839936] [2021-11-12 22:31:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:21,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:21,770 INFO L87 Difference]: Start difference. First operand 702 states and 900 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:24,057 INFO L93 Difference]: Finished difference Result 1890 states and 2470 transitions. [2021-11-12 22:31:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:24,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-12 22:31:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:24,059 INFO L225 Difference]: With dead ends: 1890 [2021-11-12 22:31:24,059 INFO L226 Difference]: Without dead ends: 1296 [2021-11-12 22:31:24,060 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 [2021-11-12 22:31:24,060 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 44 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:24,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 37.99ms Time] [2021-11-12 22:31:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-11-12 22:31:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1230. [2021-11-12 22:31:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.292107404393816) internal successors, (1588), 1229 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1588 transitions. [2021-11-12 22:31:26,121 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1588 transitions. Word has length 131 [2021-11-12 22:31:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:26,122 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1588 transitions. [2021-11-12 22:31:26,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1588 transitions. [2021-11-12 22:31:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 22:31:26,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:26,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:26,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-12 22:31:26,123 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -848711929, now seen corresponding path program 1 times [2021-11-12 22:31:26,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:26,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297223373] [2021-11-12 22:31:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:26,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:26,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:26,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297223373] [2021-11-12 22:31:26,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297223373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:26,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:26,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:26,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275331883] [2021-11-12 22:31:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:26,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:26,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:26,183 INFO L87 Difference]: Start difference. First operand 1230 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:30,238 INFO L93 Difference]: Finished difference Result 3474 states and 4534 transitions. [2021-11-12 22:31:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-12 22:31:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:30,240 INFO L225 Difference]: With dead ends: 3474 [2021-11-12 22:31:30,241 INFO L226 Difference]: Without dead ends: 2352 [2021-11-12 22:31:30,242 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 [2021-11-12 22:31:30,243 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 34 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:30,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 336 Invalid, 30 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 36.65ms Time] [2021-11-12 22:31:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-11-12 22:31:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2222. [2021-11-12 22:31:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.2913102206213418) internal successors, (2868), 2221 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2868 transitions. [2021-11-12 22:31:34,092 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2868 transitions. Word has length 134 [2021-11-12 22:31:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:34,092 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2868 transitions. [2021-11-12 22:31:34,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2868 transitions. [2021-11-12 22:31:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-12 22:31:34,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:34,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:34,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-12 22:31:34,094 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:34,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1371630351, now seen corresponding path program 1 times [2021-11-12 22:31:34,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:34,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296163583] [2021-11-12 22:31:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:34,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:34,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:34,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296163583] [2021-11-12 22:31:34,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296163583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:34,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:34,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-12 22:31:34,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341950877] [2021-11-12 22:31:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:34,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:31:34,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:31:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:31:34,192 INFO L87 Difference]: Start difference. First operand 2222 states and 2868 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:46,434 INFO L93 Difference]: Finished difference Result 8836 states and 11460 transitions. [2021-11-12 22:31:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:31:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-12 22:31:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:46,443 INFO L225 Difference]: With dead ends: 8836 [2021-11-12 22:31:46,443 INFO L226 Difference]: Without dead ends: 6722 [2021-11-12 22:31:46,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:31:46,447 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1130 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.66ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:46,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 2055 Invalid, 351 Unknown, 0 Unchecked, 6.66ms Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 227.90ms Time] [2021-11-12 22:31:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2021-11-12 22:31:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 2987. [2021-11-12 22:31:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2809778968519758) internal successors, (3825), 2986 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3825 transitions. [2021-11-12 22:31:51,686 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3825 transitions. Word has length 137 [2021-11-12 22:31:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:51,686 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 3825 transitions. [2021-11-12 22:31:51,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3825 transitions. [2021-11-12 22:31:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:31:51,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:51,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:51,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-12 22:31:51,687 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:31:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash -851918415, now seen corresponding path program 1 times [2021-11-12 22:31:51,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:31:51,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141071437] [2021-11-12 22:31:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:51,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:31:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:51,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:31:51,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141071437] [2021-11-12 22:31:51,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141071437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:51,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:51,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:31:51,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311893805] [2021-11-12 22:31:51,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:51,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:51,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:31:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:31:51,747 INFO L87 Difference]: Start difference. First operand 2987 states and 3825 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:56,715 INFO L93 Difference]: Finished difference Result 5868 states and 7536 transitions. [2021-11-12 22:31:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-12 22:31:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:56,718 INFO L225 Difference]: With dead ends: 5868 [2021-11-12 22:31:56,718 INFO L226 Difference]: Without dead ends: 2989 [2021-11-12 22:31:56,721 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 [2021-11-12 22:31:56,721 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 35 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:56,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 270 Invalid, 41 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 39.62ms Time] [2021-11-12 22:31:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2021-11-12 22:32:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2987. [2021-11-12 22:32:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2806430006697924) internal successors, (3824), 2986 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3824 transitions. [2021-11-12 22:32:01,910 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3824 transitions. Word has length 139 [2021-11-12 22:32:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 3824 transitions. [2021-11-12 22:32:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3824 transitions. [2021-11-12 22:32:01,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:32:01,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:01,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:01,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-12 22:32:01,911 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:32:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1619959012, now seen corresponding path program 1 times [2021-11-12 22:32:01,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:01,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101181633] [2021-11-12 22:32:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:01,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:01,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:01,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101181633] [2021-11-12 22:32:01,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101181633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:01,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:01,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:32:01,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612912035] [2021-11-12 22:32:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:01,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:32:01,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:32:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:32:01,960 INFO L87 Difference]: Start difference. First operand 2987 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:08,893 INFO L93 Difference]: Finished difference Result 7084 states and 9102 transitions. [2021-11-12 22:32:08,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:32:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-12 22:32:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:08,897 INFO L225 Difference]: With dead ends: 7084 [2021-11-12 22:32:08,897 INFO L226 Difference]: Without dead ends: 4205 [2021-11-12 22:32:08,900 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 [2021-11-12 22:32:08,900 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 92 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.34ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:08,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 259 Invalid, 30 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.34ms Time] [2021-11-12 22:32:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-11-12 22:32:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4203. [2021-11-12 22:32:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 1.2753450737743932) internal successors, (5359), 4202 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 5359 transitions. [2021-11-12 22:32:16,609 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 5359 transitions. Word has length 139 [2021-11-12 22:32:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 5359 transitions. [2021-11-12 22:32:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 5359 transitions. [2021-11-12 22:32:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-12 22:32:16,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:16,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:16,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-12 22:32:16,610 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:32:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash -727134786, now seen corresponding path program 1 times [2021-11-12 22:32:16,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:16,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146649747] [2021-11-12 22:32:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:16,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:16,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:16,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146649747] [2021-11-12 22:32:16,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146649747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:16,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:16,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:32:16,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180232791] [2021-11-12 22:32:16,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:16,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:32:16,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:16,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:32:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:32:16,715 INFO L87 Difference]: Start difference. First operand 4203 states and 5359 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:28,036 INFO L93 Difference]: Finished difference Result 6011 states and 7587 transitions. [2021-11-12 22:32:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:32:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-12 22:32:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:28,043 INFO L225 Difference]: With dead ends: 6011 [2021-11-12 22:32:28,043 INFO L226 Difference]: Without dead ends: 6009 [2021-11-12 22:32:28,045 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 [2021-11-12 22:32:28,045 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 369 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:28,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 1087 Invalid, 151 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 108.93ms Time] [2021-11-12 22:32:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6009 states. [2021-11-12 22:32:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6009 to 4203. [2021-11-12 22:32:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 1.2601142313184197) internal successors, (5295), 4202 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 5295 transitions. [2021-11-12 22:32:35,887 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 5295 transitions. Word has length 140 [2021-11-12 22:32:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:35,888 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 5295 transitions. [2021-11-12 22:32:35,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 5295 transitions. [2021-11-12 22:32:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-12 22:32:35,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:35,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:35,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-12 22:32:35,890 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:32:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 673402653, now seen corresponding path program 1 times [2021-11-12 22:32:35,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:35,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903327685] [2021-11-12 22:32:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:35,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:32:36,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:32:36,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903327685] [2021-11-12 22:32:36,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903327685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:32:36,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:32:36,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:32:36,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977641085] [2021-11-12 22:32:36,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:32:36,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:32:36,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:32:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:32:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:32:36,031 INFO L87 Difference]: Start difference. First operand 4203 states and 5295 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:48,462 INFO L93 Difference]: Finished difference Result 10598 states and 13374 transitions. [2021-11-12 22:32:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:32:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 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 158 [2021-11-12 22:32:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:48,471 INFO L225 Difference]: With dead ends: 10598 [2021-11-12 22:32:48,471 INFO L226 Difference]: Without dead ends: 6497 [2021-11-12 22:32:48,475 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 [2021-11-12 22:32:48,476 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 584 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:48,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 448 Invalid, 412 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [11 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 259.19ms Time] [2021-11-12 22:32:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2021-11-12 22:32:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 4203. [2021-11-12 22:32:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 1.2598762494050453) internal successors, (5294), 4202 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 5294 transitions. [2021-11-12 22:32:56,578 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 5294 transitions. Word has length 158 [2021-11-12 22:32:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:56,579 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 5294 transitions. [2021-11-12 22:32:56,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 5294 transitions. [2021-11-12 22:32:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-12 22:32:56,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:56,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:56,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-12 22:32:56,581 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-12 22:32:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1614497109, now seen corresponding path program 1 times [2021-11-12 22:32:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:32:56,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093750598] [2021-11-12 22:32:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:56,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:32:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:04,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:33:04,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093750598] [2021-11-12 22:33:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093750598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:33:04,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505537303] [2021-11-12 22:33:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:33:04,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:33:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:33:04,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:33:04,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636d89d1-adc4-4657-aa84-f99ec0c61eb2/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:33:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:33:04,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-12 22:33:04,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:34:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:34:02,202 INFO L328 TraceCheckSpWp]: Computing backward predicates...