./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/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 d0b255ca8288d7fec2d600e13b499a216c3c13b3ba13eac2e9a1248f762a9435 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:42:24,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:42:24,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:42:24,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:42:24,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:42:24,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:42:24,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:42:24,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:42:24,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:42:24,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:42:24,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:42:24,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:42:24,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:42:24,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:42:24,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:42:24,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:42:24,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:42:24,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:42:24,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:42:24,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:42:24,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:42:24,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:42:24,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:42:24,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:42:24,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:42:24,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:42:24,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:42:24,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:42:24,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:42:24,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:42:24,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:42:24,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:42:24,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:42:24,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:42:24,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:42:24,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:42:24,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:42:24,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:42:24,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:42:24,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:42:24,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:42:24,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:42:25,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:42:25,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:42:25,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:42:25,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:42:25,038 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:42:25,038 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:42:25,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:42:25,039 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:42:25,039 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:42:25,039 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:42:25,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:42:25,040 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:42:25,041 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:42:25,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:42:25,041 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:42:25,041 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:42:25,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:42:25,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:42:25,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:42:25,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:42:25,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:42:25,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:42:25,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:42:25,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:42:25,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:42:25,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:42:25,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:42:25,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:42:25,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:42:25,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:42:25,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:42:25,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:42:25,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:42:25,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:42:25,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:42:25,049 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:42:25,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:42:25,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:42:25,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:42:25,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:42:25,050 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0b255ca8288d7fec2d600e13b499a216c3c13b3ba13eac2e9a1248f762a9435 [2021-11-13 01:42:25,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:42:25,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:42:25,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:42:25,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:42:25,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:42:25,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-13 01:42:25,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/data/1bd1e9006/f42589e705e64d32b78853dc9801a5b2/FLAG1f2cb193d [2021-11-13 01:42:26,335 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:42:26,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-13 01:42:26,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/data/1bd1e9006/f42589e705e64d32b78853dc9801a5b2/FLAG1f2cb193d [2021-11-13 01:42:26,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/data/1bd1e9006/f42589e705e64d32b78853dc9801a5b2 [2021-11-13 01:42:26,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:42:26,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:42:26,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:26,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:42:26,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:42:26,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:26" (1/1) ... [2021-11-13 01:42:26,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ded10e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:26, skipping insertion in model container [2021-11-13 01:42:26,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:26" (1/1) ... [2021-11-13 01:42:26,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:42:27,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:42:27,699 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2021-11-13 01:42:27,867 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2021-11-13 01:42:27,912 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2021-11-13 01:42:27,992 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2021-11-13 01:42:28,035 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2021-11-13 01:42:28,082 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2021-11-13 01:42:28,131 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2021-11-13 01:42:28,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:28,428 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:42:28,556 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2021-11-13 01:42:28,610 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2021-11-13 01:42:28,630 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2021-11-13 01:42:28,692 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2021-11-13 01:42:28,740 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2021-11-13 01:42:28,779 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2021-11-13 01:42:28,818 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_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2021-11-13 01:42:29,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:29,033 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:42:29,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29 WrapperNode [2021-11-13 01:42:29,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:29,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:42:29,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:42:29,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:42:29,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:42:29,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:42:29,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:42:29,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:42:29,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:42:29,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:42:29,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:42:29,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:42:29,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (1/1) ... [2021-11-13 01:42:29,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:42:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:29,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:42:29,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc5072f-9b75-4235-a1c8-b6ac20e2186b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:42:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:42:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:42:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:42:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:42:34,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:42:34,687 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:42:34,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:34 BoogieIcfgContainer [2021-11-13 01:42:34,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:42:34,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:42:34,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:42:34,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:42:34,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:42:26" (1/3) ... [2021-11-13 01:42:34,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296a259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:34, skipping insertion in model container [2021-11-13 01:42:34,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:29" (2/3) ... [2021-11-13 01:42:34,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296a259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:34, skipping insertion in model container [2021-11-13 01:42:34,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:34" (3/3) ... [2021-11-13 01:42:34,707 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-13 01:42:34,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:42:34,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-13 01:42:34,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:42:34,799 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 [2021-11-13 01:42:34,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-13 01:42:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 1988 states, 1980 states have (on average 1.7772727272727273) internal successors, (3519), 1987 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:42:34,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:34,894 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] [2021-11-13 01:42:34,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1909444281, now seen corresponding path program 1 times [2021-11-13 01:42:34,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:34,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810228974] [2021-11-13 01:42:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:34,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:35,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:35,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810228974] [2021-11-13 01:42:35,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810228974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:35,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:42:35,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693712995] [2021-11-13 01:42:35,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:35,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:35,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:35,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:42:35,501 INFO L87 Difference]: Start difference. First operand has 1988 states, 1980 states have (on average 1.7772727272727273) internal successors, (3519), 1987 states have internal predecessors, (3519), 0 states have call successors, (0), 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 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:37,633 INFO L93 Difference]: Finished difference Result 3171 states and 5495 transitions. [2021-11-13 01:42:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-13 01:42:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:37,671 INFO L225 Difference]: With dead ends: 3171 [2021-11-13 01:42:37,671 INFO L226 Difference]: Without dead ends: 2042 [2021-11-13 01:42:37,684 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 [2021-11-13 01:42:37,690 INFO L933 BasicCegarLoop]: 1646 mSDtfsCounter, 9703 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1344.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9703 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.78ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1795.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:37,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9703 Valid, 2108 Invalid, 1541 Unknown, 0 Unchecked, 38.78ms Time], IncrementalHoareTripleChecker [40 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1795.02ms Time] [2021-11-13 01:42:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-13 01:42:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2027. [2021-11-13 01:42:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2020 states have (on average 1.2806930693069307) internal successors, (2587), 2026 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2587 transitions. [2021-11-13 01:42:37,900 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2587 transitions. Word has length 64 [2021-11-13 01:42:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:37,902 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 2587 transitions. [2021-11-13 01:42:37,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2587 transitions. [2021-11-13 01:42:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:42:37,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:37,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:37,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:42:37,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1273964660, now seen corresponding path program 1 times [2021-11-13 01:42:37,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:37,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420174372] [2021-11-13 01:42:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:37,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:38,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:38,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420174372] [2021-11-13 01:42:38,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420174372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:38,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:38,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:42:38,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182539691] [2021-11-13 01:42:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:42:38,135 INFO L87 Difference]: Start difference. First operand 2027 states and 2587 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:39,856 INFO L93 Difference]: Finished difference Result 4107 states and 5301 transitions. [2021-11-13 01:42:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 01:42:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:39,874 INFO L225 Difference]: With dead ends: 4107 [2021-11-13 01:42:39,874 INFO L226 Difference]: Without dead ends: 2761 [2021-11-13 01:42:39,877 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 [2021-11-13 01:42:39,879 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 7451 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1210.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7451 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.58ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1487.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:39,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7451 Valid, 1378 Invalid, 1457 Unknown, 0 Unchecked, 26.58ms Time], IncrementalHoareTripleChecker [49 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1487.25ms Time] [2021-11-13 01:42:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-13 01:42:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2755. [2021-11-13 01:42:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2748 states have (on average 1.2802037845705967) internal successors, (3518), 2754 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3518 transitions. [2021-11-13 01:42:40,018 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3518 transitions. Word has length 65 [2021-11-13 01:42:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:40,019 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 3518 transitions. [2021-11-13 01:42:40,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3518 transitions. [2021-11-13 01:42:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:42:40,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:40,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:40,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:42:40,027 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1135153234, now seen corresponding path program 1 times [2021-11-13 01:42:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:40,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226024241] [2021-11-13 01:42:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:40,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:40,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:40,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226024241] [2021-11-13 01:42:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226024241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:40,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:40,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:42:40,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829647156] [2021-11-13 01:42:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:40,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:40,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:42:40,149 INFO L87 Difference]: Start difference. First operand 2755 states and 3518 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:41,828 INFO L93 Difference]: Finished difference Result 5639 states and 7178 transitions. [2021-11-13 01:42:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:41,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-13 01:42:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:41,849 INFO L225 Difference]: With dead ends: 5639 [2021-11-13 01:42:41,849 INFO L226 Difference]: Without dead ends: 3704 [2021-11-13 01:42:41,853 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 [2021-11-13 01:42:41,857 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 6904 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1103.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6904 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.82ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1360.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:41,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6904 Valid, 1296 Invalid, 1395 Unknown, 0 Unchecked, 16.82ms Time], IncrementalHoareTripleChecker [102 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1360.60ms Time] [2021-11-13 01:42:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-11-13 01:42:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3688. [2021-11-13 01:42:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3681 states have (on average 1.2553653898397175) internal successors, (4621), 3687 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 4621 transitions. [2021-11-13 01:42:42,066 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 4621 transitions. Word has length 65 [2021-11-13 01:42:42,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:42,068 INFO L470 AbstractCegarLoop]: Abstraction has 3688 states and 4621 transitions. [2021-11-13 01:42:42,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 4621 transitions. [2021-11-13 01:42:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:42:42,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:42,078 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] [2021-11-13 01:42:42,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 01:42:42,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1544378841, now seen corresponding path program 1 times [2021-11-13 01:42:42,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:42,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287481296] [2021-11-13 01:42:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:42,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:42,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:42,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287481296] [2021-11-13 01:42:42,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287481296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:42,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:42,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 01:42:42,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035497322] [2021-11-13 01:42:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:42,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:42:42,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:42:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:42:42,406 INFO L87 Difference]: Start difference. First operand 3688 states and 4621 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:47,373 INFO L93 Difference]: Finished difference Result 5999 states and 7630 transitions. [2021-11-13 01:42:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 01:42:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-13 01:42:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:47,406 INFO L225 Difference]: With dead ends: 5999 [2021-11-13 01:42:47,406 INFO L226 Difference]: Without dead ends: 5418 [2021-11-13 01:42:47,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-11-13 01:42:47,418 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 6827 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 6579 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3396.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6827 SdHoareTripleChecker+Valid, 6316 SdHoareTripleChecker+Invalid, 6605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.94ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4127.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:47,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6827 Valid, 6316 Invalid, 6605 Unknown, 0 Unchecked, 53.94ms Time], IncrementalHoareTripleChecker [26 Valid, 6579 Invalid, 0 Unknown, 0 Unchecked, 4127.60ms Time] [2021-11-13 01:42:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-11-13 01:42:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 3695. [2021-11-13 01:42:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3688 states have (on average 1.254880694143167) internal successors, (4628), 3694 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4628 transitions. [2021-11-13 01:42:47,731 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4628 transitions. Word has length 66 [2021-11-13 01:42:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:47,732 INFO L470 AbstractCegarLoop]: Abstraction has 3695 states and 4628 transitions. [2021-11-13 01:42:47,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4628 transitions. [2021-11-13 01:42:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:42:47,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:47,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:47,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 01:42:47,742 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1262167379, now seen corresponding path program 1 times [2021-11-13 01:42:47,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:47,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010700267] [2021-11-13 01:42:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:47,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:47,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:47,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010700267] [2021-11-13 01:42:47,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010700267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:47,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:47,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:42:47,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456701338] [2021-11-13 01:42:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:47,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:47,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:42:47,865 INFO L87 Difference]: Start difference. First operand 3695 states and 4628 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:49,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:49,326 INFO L93 Difference]: Finished difference Result 7188 states and 9035 transitions. [2021-11-13 01:42:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:49,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:42:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:49,354 INFO L225 Difference]: With dead ends: 7188 [2021-11-13 01:42:49,354 INFO L226 Difference]: Without dead ends: 4857 [2021-11-13 01:42:49,360 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 [2021-11-13 01:42:49,360 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 6006 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 906.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6006 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.21ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1155.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:49,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6006 Valid, 1141 Invalid, 1165 Unknown, 0 Unchecked, 14.21ms Time], IncrementalHoareTripleChecker [49 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1155.57ms Time] [2021-11-13 01:42:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-11-13 01:42:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4847. [2021-11-13 01:42:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4840 states have (on average 1.2524793388429751) internal successors, (6062), 4846 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 6062 transitions. [2021-11-13 01:42:49,740 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 6062 transitions. Word has length 67 [2021-11-13 01:42:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:49,740 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 6062 transitions. [2021-11-13 01:42:49,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 6062 transitions. [2021-11-13 01:42:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:42:49,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:49,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:49,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 01:42:49,749 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1978451918, now seen corresponding path program 1 times [2021-11-13 01:42:49,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:49,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058608004] [2021-11-13 01:42:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:49,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:49,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058608004] [2021-11-13 01:42:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058608004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:49,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:49,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:42:49,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117277022] [2021-11-13 01:42:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:49,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:42:49,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:42:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:42:49,961 INFO L87 Difference]: Start difference. First operand 4847 states and 6062 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:52,194 INFO L93 Difference]: Finished difference Result 5839 states and 7315 transitions. [2021-11-13 01:42:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:42:52,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:42:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:52,230 INFO L225 Difference]: With dead ends: 5839 [2021-11-13 01:42:52,230 INFO L226 Difference]: Without dead ends: 5833 [2021-11-13 01:42:52,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:42:52,234 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 5081 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1400.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.73ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1755.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:52,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 3652 Invalid, 3497 Unknown, 0 Unchecked, 18.73ms Time], IncrementalHoareTripleChecker [113 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 1755.88ms Time] [2021-11-13 01:42:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5833 states. [2021-11-13 01:42:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5833 to 4847. [2021-11-13 01:42:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4840 states have (on average 1.2522727272727272) internal successors, (6061), 4846 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 6061 transitions. [2021-11-13 01:42:52,597 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 6061 transitions. Word has length 67 [2021-11-13 01:42:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:52,598 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 6061 transitions. [2021-11-13 01:42:52,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 6061 transitions. [2021-11-13 01:42:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:42:52,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:52,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:52,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 01:42:52,608 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -396667281, now seen corresponding path program 1 times [2021-11-13 01:42:52,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:52,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339849256] [2021-11-13 01:42:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:52,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:53,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:53,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339849256] [2021-11-13 01:42:53,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339849256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:53,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:53,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:42:53,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89560167] [2021-11-13 01:42:53,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:53,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:42:53,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:53,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:42:53,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:42:53,066 INFO L87 Difference]: Start difference. First operand 4847 states and 6061 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:56,902 INFO L93 Difference]: Finished difference Result 12184 states and 15829 transitions. [2021-11-13 01:42:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-13 01:42:56,903 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-13 01:42:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:56,960 INFO L225 Difference]: With dead ends: 12184 [2021-11-13 01:42:56,960 INFO L226 Difference]: Without dead ends: 12180 [2021-11-13 01:42:56,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:42:56,965 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 9893 mSDsluCounter, 12953 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1713.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 14456 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.71ms SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2096.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:56,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9893 Valid, 14456 Invalid, 3435 Unknown, 0 Unchecked, 31.71ms Time], IncrementalHoareTripleChecker [230 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 2096.21ms Time] [2021-11-13 01:42:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2021-11-13 01:42:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 4843. [2021-11-13 01:42:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 4837 states have (on average 1.252015712218317) internal successors, (6056), 4842 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 6056 transitions. [2021-11-13 01:42:57,463 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 6056 transitions. Word has length 67 [2021-11-13 01:42:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:57,464 INFO L470 AbstractCegarLoop]: Abstraction has 4843 states and 6056 transitions. [2021-11-13 01:42:57,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:42:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 6056 transitions. [2021-11-13 01:42:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:42:57,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:57,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:57,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 01:42:57,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:42:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1679399413, now seen corresponding path program 1 times [2021-11-13 01:42:57,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:42:57,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762262906] [2021-11-13 01:42:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:57,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:42:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:42:57,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:42:57,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762262906] [2021-11-13 01:42:57,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762262906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:57,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:57,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 01:42:57,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272652971] [2021-11-13 01:42:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:57,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:42:57,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:42:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:42:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:42:57,666 INFO L87 Difference]: Start difference. First operand 4843 states and 6056 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:01,422 INFO L93 Difference]: Finished difference Result 9082 states and 11737 transitions. [2021-11-13 01:43:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 01:43:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 01:43:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:01,439 INFO L225 Difference]: With dead ends: 9082 [2021-11-13 01:43:01,439 INFO L226 Difference]: Without dead ends: 8143 [2021-11-13 01:43:01,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:43:01,444 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 6664 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 5104 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2195.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 5725 SdHoareTripleChecker+Invalid, 5276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.84ms SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 5104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2681.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:01,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6664 Valid, 5725 Invalid, 5276 Unknown, 0 Unchecked, 21.84ms Time], IncrementalHoareTripleChecker [172 Valid, 5104 Invalid, 0 Unknown, 0 Unchecked, 2681.51ms Time] [2021-11-13 01:43:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2021-11-13 01:43:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 4822. [2021-11-13 01:43:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4816 states have (on average 1.2520764119601329) internal successors, (6030), 4821 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 6030 transitions. [2021-11-13 01:43:01,946 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 6030 transitions. Word has length 68 [2021-11-13 01:43:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:01,947 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 6030 transitions. [2021-11-13 01:43:01,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 6030 transitions. [2021-11-13 01:43:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:43:01,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:01,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:01,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 01:43:01,953 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1296136613, now seen corresponding path program 1 times [2021-11-13 01:43:01,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:01,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685060078] [2021-11-13 01:43:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:01,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:02,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:02,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685060078] [2021-11-13 01:43:02,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685060078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:02,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:02,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 01:43:02,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091618049] [2021-11-13 01:43:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:02,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:43:02,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:43:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:43:02,341 INFO L87 Difference]: Start difference. First operand 4822 states and 6030 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:07,491 INFO L93 Difference]: Finished difference Result 14229 states and 18727 transitions. [2021-11-13 01:43:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 01:43:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-13 01:43:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:07,533 INFO L225 Difference]: With dead ends: 14229 [2021-11-13 01:43:07,533 INFO L226 Difference]: Without dead ends: 13266 [2021-11-13 01:43:07,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 01:43:07,538 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 13404 mSDsluCounter, 13694 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1557.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13404 SdHoareTripleChecker+Valid, 15408 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.10ms SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1850.58ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:07,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13404 Valid, 15408 Invalid, 2827 Unknown, 0 Unchecked, 34.10ms Time], IncrementalHoareTripleChecker [307 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 1850.58ms Time] [2021-11-13 01:43:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2021-11-13 01:43:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 4773. [2021-11-13 01:43:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4768 states have (on average 1.2531459731543624) internal successors, (5975), 4772 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 5975 transitions. [2021-11-13 01:43:08,219 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 5975 transitions. Word has length 68 [2021-11-13 01:43:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 4773 states and 5975 transitions. [2021-11-13 01:43:08,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 5975 transitions. [2021-11-13 01:43:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 01:43:08,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:08,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:08,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 01:43:08,227 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 479527467, now seen corresponding path program 1 times [2021-11-13 01:43:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:08,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312562421] [2021-11-13 01:43:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:08,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:08,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:08,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312562421] [2021-11-13 01:43:08,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312562421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:43:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372690837] [2021-11-13 01:43:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:08,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:43:08,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:43:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:43:08,600 INFO L87 Difference]: Start difference. First operand 4773 states and 5975 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:14,298 INFO L93 Difference]: Finished difference Result 14282 states and 18650 transitions. [2021-11-13 01:43:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-13 01:43:14,299 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-13 01:43:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:14,330 INFO L225 Difference]: With dead ends: 14282 [2021-11-13 01:43:14,331 INFO L226 Difference]: Without dead ends: 13340 [2021-11-13 01:43:14,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:43:14,339 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 11293 mSDsluCounter, 8792 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1278.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11293 SdHoareTripleChecker+Valid, 10415 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.20ms SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1528.55ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:14,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11293 Valid, 10415 Invalid, 2163 Unknown, 0 Unchecked, 26.20ms Time], IncrementalHoareTripleChecker [174 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1528.55ms Time] [2021-11-13 01:43:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2021-11-13 01:43:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 4783. [2021-11-13 01:43:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4778 states have (on average 1.2532440351611553) internal successors, (5988), 4782 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 5988 transitions. [2021-11-13 01:43:15,267 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 5988 transitions. Word has length 69 [2021-11-13 01:43:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:15,268 INFO L470 AbstractCegarLoop]: Abstraction has 4783 states and 5988 transitions. [2021-11-13 01:43:15,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 5988 transitions. [2021-11-13 01:43:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:43:15,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:15,275 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] [2021-11-13 01:43:15,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 01:43:15,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1779915904, now seen corresponding path program 1 times [2021-11-13 01:43:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:15,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602230059] [2021-11-13 01:43:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:15,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:15,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:15,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602230059] [2021-11-13 01:43:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602230059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:15,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:15,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:15,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303042815] [2021-11-13 01:43:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:15,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:15,332 INFO L87 Difference]: Start difference. First operand 4783 states and 5988 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:16,790 INFO L93 Difference]: Finished difference Result 9351 states and 11774 transitions. [2021-11-13 01:43:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-13 01:43:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:16,798 INFO L225 Difference]: With dead ends: 9351 [2021-11-13 01:43:16,799 INFO L226 Difference]: Without dead ends: 5737 [2021-11-13 01:43:16,804 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 [2021-11-13 01:43:16,805 INFO L933 BasicCegarLoop]: 1454 mSDtfsCounter, 1460 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.88ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:16,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 1933 Invalid, 206 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [13 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 174.88ms Time] [2021-11-13 01:43:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2021-11-13 01:43:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5726. [2021-11-13 01:43:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 5722 states have (on average 1.247116392869626) internal successors, (7136), 5725 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 7136 transitions. [2021-11-13 01:43:17,838 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 7136 transitions. Word has length 70 [2021-11-13 01:43:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:17,839 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 7136 transitions. [2021-11-13 01:43:17,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 7136 transitions. [2021-11-13 01:43:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:43:17,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:17,847 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] [2021-11-13 01:43:17,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 01:43:17,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 912265829, now seen corresponding path program 1 times [2021-11-13 01:43:17,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:17,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289531516] [2021-11-13 01:43:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:17,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:17,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:17,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289531516] [2021-11-13 01:43:17,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289531516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:17,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:17,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:17,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520385827] [2021-11-13 01:43:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:17,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:17,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:17,902 INFO L87 Difference]: Start difference. First operand 5726 states and 7136 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:19,115 INFO L93 Difference]: Finished difference Result 8689 states and 11029 transitions. [2021-11-13 01:43:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-13 01:43:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:19,123 INFO L225 Difference]: With dead ends: 8689 [2021-11-13 01:43:19,123 INFO L226 Difference]: Without dead ends: 5274 [2021-11-13 01:43:19,128 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 [2021-11-13 01:43:19,129 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1112 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:19,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 1545 Invalid, 101 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 88.83ms Time] [2021-11-13 01:43:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2021-11-13 01:43:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5261. [2021-11-13 01:43:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5258 states have (on average 1.2641688855077977) internal successors, (6647), 5260 states have internal predecessors, (6647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6647 transitions. [2021-11-13 01:43:20,294 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6647 transitions. Word has length 70 [2021-11-13 01:43:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:20,294 INFO L470 AbstractCegarLoop]: Abstraction has 5261 states and 6647 transitions. [2021-11-13 01:43:20,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6647 transitions. [2021-11-13 01:43:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:43:20,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:20,301 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] [2021-11-13 01:43:20,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 01:43:20,301 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1909306532, now seen corresponding path program 1 times [2021-11-13 01:43:20,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:20,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043322550] [2021-11-13 01:43:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:20,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:20,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:20,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043322550] [2021-11-13 01:43:20,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043322550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:20,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:20,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283895422] [2021-11-13 01:43:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:20,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:43:20,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:43:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:43:20,418 INFO L87 Difference]: Start difference. First operand 5261 states and 6647 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:24,018 INFO L93 Difference]: Finished difference Result 7810 states and 9918 transitions. [2021-11-13 01:43:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:43:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-13 01:43:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:24,026 INFO L225 Difference]: With dead ends: 7810 [2021-11-13 01:43:24,026 INFO L226 Difference]: Without dead ends: 7801 [2021-11-13 01:43:24,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:43:24,029 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 4564 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1223.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.62ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1502.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:24,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4564 Valid, 2778 Invalid, 2861 Unknown, 0 Unchecked, 15.62ms Time], IncrementalHoareTripleChecker [140 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 1502.99ms Time] [2021-11-13 01:43:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2021-11-13 01:43:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 5261. [2021-11-13 01:43:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5258 states have (on average 1.2639786991251427) internal successors, (6646), 5260 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6646 transitions. [2021-11-13 01:43:25,239 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6646 transitions. Word has length 70 [2021-11-13 01:43:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:25,239 INFO L470 AbstractCegarLoop]: Abstraction has 5261 states and 6646 transitions. [2021-11-13 01:43:25,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6646 transitions. [2021-11-13 01:43:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 01:43:25,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:25,246 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] [2021-11-13 01:43:25,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 01:43:25,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -902166453, now seen corresponding path program 1 times [2021-11-13 01:43:25,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:25,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650377809] [2021-11-13 01:43:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:25,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:25,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:25,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650377809] [2021-11-13 01:43:25,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650377809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:25,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:25,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:43:25,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367566736] [2021-11-13 01:43:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:25,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:43:25,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:43:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:43:25,555 INFO L87 Difference]: Start difference. First operand 5261 states and 6646 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:29,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:29,111 INFO L93 Difference]: Finished difference Result 9356 states and 12251 transitions. [2021-11-13 01:43:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:43:29,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-13 01:43:29,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:29,119 INFO L225 Difference]: With dead ends: 9356 [2021-11-13 01:43:29,119 INFO L226 Difference]: Without dead ends: 8444 [2021-11-13 01:43:29,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:43:29,124 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 4962 mSDsluCounter, 6423 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 525.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4962 SdHoareTripleChecker+Valid, 7634 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.58ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 639.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:29,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4962 Valid, 7634 Invalid, 995 Unknown, 0 Unchecked, 14.58ms Time], IncrementalHoareTripleChecker [14 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 639.47ms Time] [2021-11-13 01:43:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2021-11-13 01:43:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 5199. [2021-11-13 01:43:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5197 states have (on average 1.2657302289782566) internal successors, (6578), 5198 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6578 transitions. [2021-11-13 01:43:30,346 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6578 transitions. Word has length 71 [2021-11-13 01:43:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:30,346 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6578 transitions. [2021-11-13 01:43:30,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6578 transitions. [2021-11-13 01:43:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 01:43:30,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:30,355 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] [2021-11-13 01:43:30,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 01:43:30,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1452369226, now seen corresponding path program 1 times [2021-11-13 01:43:30,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:30,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516782551] [2021-11-13 01:43:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:30,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:30,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:30,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516782551] [2021-11-13 01:43:30,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516782551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:30,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:30,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 01:43:30,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904259705] [2021-11-13 01:43:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:30,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:43:30,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:43:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:43:30,546 INFO L87 Difference]: Start difference. First operand 5199 states and 6578 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:35,270 INFO L93 Difference]: Finished difference Result 10908 states and 14262 transitions. [2021-11-13 01:43:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:43:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-13 01:43:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:35,280 INFO L225 Difference]: With dead ends: 10908 [2021-11-13 01:43:35,280 INFO L226 Difference]: Without dead ends: 8477 [2021-11-13 01:43:35,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:43:35,285 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 4091 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1465.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.70ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1773.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:35,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4091 Valid, 3528 Invalid, 3288 Unknown, 0 Unchecked, 16.70ms Time], IncrementalHoareTripleChecker [33 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 1773.68ms Time] [2021-11-13 01:43:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8477 states. [2021-11-13 01:43:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8477 to 5199. [2021-11-13 01:43:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5197 states have (on average 1.2655378102751587) internal successors, (6577), 5198 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6577 transitions. [2021-11-13 01:43:36,655 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6577 transitions. Word has length 71 [2021-11-13 01:43:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:36,656 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6577 transitions. [2021-11-13 01:43:36,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6577 transitions. [2021-11-13 01:43:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:43:36,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:36,663 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] [2021-11-13 01:43:36,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 01:43:36,664 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1101201042, now seen corresponding path program 1 times [2021-11-13 01:43:36,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:36,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411179839] [2021-11-13 01:43:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:36,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:36,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:36,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411179839] [2021-11-13 01:43:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411179839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:36,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:43:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759151610] [2021-11-13 01:43:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:43:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:43:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:43:36,720 INFO L87 Difference]: Start difference. First operand 5199 states and 6577 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:38,684 INFO L93 Difference]: Finished difference Result 8990 states and 11767 transitions. [2021-11-13 01:43:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:43:38,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:43:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:38,690 INFO L225 Difference]: With dead ends: 8990 [2021-11-13 01:43:38,690 INFO L226 Difference]: Without dead ends: 6135 [2021-11-13 01:43:38,694 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 [2021-11-13 01:43:38,695 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 661 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.25ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:38,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1640 Invalid, 73 Unknown, 0 Unchecked, 6.25ms Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 76.60ms Time] [2021-11-13 01:43:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2021-11-13 01:43:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 6133. [2021-11-13 01:43:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 6131 states have (on average 1.2829880932963627) internal successors, (7866), 6132 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 7866 transitions. [2021-11-13 01:43:40,581 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 7866 transitions. Word has length 72 [2021-11-13 01:43:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:40,581 INFO L470 AbstractCegarLoop]: Abstraction has 6133 states and 7866 transitions. [2021-11-13 01:43:40,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 7866 transitions. [2021-11-13 01:43:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:43:40,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:40,587 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] [2021-11-13 01:43:40,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 01:43:40,587 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash 457049012, now seen corresponding path program 1 times [2021-11-13 01:43:40,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:40,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181107287] [2021-11-13 01:43:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:40,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:40,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:40,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181107287] [2021-11-13 01:43:40,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181107287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:40,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:40,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 01:43:40,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855134850] [2021-11-13 01:43:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:40,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:43:40,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:43:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:43:40,753 INFO L87 Difference]: Start difference. First operand 6133 states and 7866 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:47,151 INFO L93 Difference]: Finished difference Result 13957 states and 18223 transitions. [2021-11-13 01:43:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 01:43:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:43:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:47,164 INFO L225 Difference]: With dead ends: 13957 [2021-11-13 01:43:47,164 INFO L226 Difference]: Without dead ends: 11900 [2021-11-13 01:43:47,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2021-11-13 01:43:47,168 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 4237 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1552.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.51ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1896.07ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:47,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 4189 Invalid, 3737 Unknown, 0 Unchecked, 15.51ms Time], IncrementalHoareTripleChecker [110 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1896.07ms Time] [2021-11-13 01:43:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11900 states. [2021-11-13 01:43:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11900 to 6133. [2021-11-13 01:43:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 6131 states have (on average 1.2828249877670852) internal successors, (7865), 6132 states have internal predecessors, (7865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 7865 transitions. [2021-11-13 01:43:49,122 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 7865 transitions. Word has length 72 [2021-11-13 01:43:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:49,122 INFO L470 AbstractCegarLoop]: Abstraction has 6133 states and 7865 transitions. [2021-11-13 01:43:49,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 7865 transitions. [2021-11-13 01:43:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:43:49,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:49,126 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] [2021-11-13 01:43:49,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 01:43:49,127 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -501754829, now seen corresponding path program 1 times [2021-11-13 01:43:49,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:49,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894588183] [2021-11-13 01:43:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:49,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:49,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:49,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894588183] [2021-11-13 01:43:49,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894588183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:49,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:49,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:49,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316850398] [2021-11-13 01:43:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:49,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:43:49,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:43:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:43:49,244 INFO L87 Difference]: Start difference. First operand 6133 states and 7865 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:55,984 INFO L93 Difference]: Finished difference Result 14034 states and 18301 transitions. [2021-11-13 01:43:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:43:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:43:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:55,999 INFO L225 Difference]: With dead ends: 14034 [2021-11-13 01:43:56,000 INFO L226 Difference]: Without dead ends: 12721 [2021-11-13 01:43:56,002 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 [2021-11-13 01:43:56,003 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 3660 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1270.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3660 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.02ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1569.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:56,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3660 Valid, 3483 Invalid, 3418 Unknown, 0 Unchecked, 14.02ms Time], IncrementalHoareTripleChecker [99 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 1569.42ms Time] [2021-11-13 01:43:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12721 states. [2021-11-13 01:43:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12721 to 6133. [2021-11-13 01:43:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 6131 states have (on average 1.282661882237808) internal successors, (7864), 6132 states have internal predecessors, (7864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 7864 transitions. [2021-11-13 01:43:58,044 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 7864 transitions. Word has length 72 [2021-11-13 01:43:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:58,045 INFO L470 AbstractCegarLoop]: Abstraction has 6133 states and 7864 transitions. [2021-11-13 01:43:58,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:43:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 7864 transitions. [2021-11-13 01:43:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:43:58,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:58,048 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] [2021-11-13 01:43:58,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 01:43:58,048 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:43:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2081808715, now seen corresponding path program 1 times [2021-11-13 01:43:58,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:43:58,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672952926] [2021-11-13 01:43:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:58,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:43:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:58,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:43:58,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672952926] [2021-11-13 01:43:58,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672952926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:58,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:58,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:43:58,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965504995] [2021-11-13 01:43:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:58,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:43:58,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:43:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:43:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:43:58,161 INFO L87 Difference]: Start difference. First operand 6133 states and 7864 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:02,178 INFO L93 Difference]: Finished difference Result 8043 states and 10393 transitions. [2021-11-13 01:44:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:44:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-13 01:44:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:02,185 INFO L225 Difference]: With dead ends: 8043 [2021-11-13 01:44:02,185 INFO L226 Difference]: Without dead ends: 7192 [2021-11-13 01:44:02,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:44:02,188 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 4190 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1062.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.75ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1309.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:02,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4190 Valid, 2735 Invalid, 2574 Unknown, 0 Unchecked, 12.75ms Time], IncrementalHoareTripleChecker [132 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1309.92ms Time] [2021-11-13 01:44:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2021-11-13 01:44:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 6132. [2021-11-13 01:44:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6130 states have (on average 1.2825448613376835) internal successors, (7862), 6131 states have internal predecessors, (7862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 7862 transitions. [2021-11-13 01:44:04,192 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 7862 transitions. Word has length 72 [2021-11-13 01:44:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:04,192 INFO L470 AbstractCegarLoop]: Abstraction has 6132 states and 7862 transitions. [2021-11-13 01:44:04,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 7862 transitions. [2021-11-13 01:44:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:44:04,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:04,196 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] [2021-11-13 01:44:04,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 01:44:04,196 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:04,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2102083951, now seen corresponding path program 1 times [2021-11-13 01:44:04,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:04,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699328913] [2021-11-13 01:44:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:04,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:04,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:04,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699328913] [2021-11-13 01:44:04,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699328913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:04,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:04,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:44:04,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286531195] [2021-11-13 01:44:04,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:04,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:44:04,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:44:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:44:04,517 INFO L87 Difference]: Start difference. First operand 6132 states and 7862 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:11,539 INFO L93 Difference]: Finished difference Result 15026 states and 19816 transitions. [2021-11-13 01:44:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:44:11,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-13 01:44:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:11,556 INFO L225 Difference]: With dead ends: 15026 [2021-11-13 01:44:11,556 INFO L226 Difference]: Without dead ends: 14174 [2021-11-13 01:44:11,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:44:11,559 INFO L933 BasicCegarLoop]: 1387 mSDtfsCounter, 4947 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 684.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 5990 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.80ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 827.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:11,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 5990 Invalid, 1222 Unknown, 0 Unchecked, 15.80ms Time], IncrementalHoareTripleChecker [119 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 827.13ms Time] [2021-11-13 01:44:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14174 states. [2021-11-13 01:44:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14174 to 6130. [2021-11-13 01:44:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6130 states, 6128 states have (on average 1.2824738903394255) internal successors, (7859), 6129 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 7859 transitions. [2021-11-13 01:44:13,699 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 7859 transitions. Word has length 73 [2021-11-13 01:44:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:13,699 INFO L470 AbstractCegarLoop]: Abstraction has 6130 states and 7859 transitions. [2021-11-13 01:44:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 7859 transitions. [2021-11-13 01:44:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:44:13,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:13,703 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] [2021-11-13 01:44:13,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 01:44:13,704 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash -285849865, now seen corresponding path program 1 times [2021-11-13 01:44:13,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:13,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596208013] [2021-11-13 01:44:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:13,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:13,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:13,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596208013] [2021-11-13 01:44:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596208013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:13,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:13,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:44:13,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319935421] [2021-11-13 01:44:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:13,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:44:13,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:44:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:44:13,765 INFO L87 Difference]: Start difference. First operand 6130 states and 7859 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:16,595 INFO L93 Difference]: Finished difference Result 11048 states and 14574 transitions. [2021-11-13 01:44:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-13 01:44:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:16,603 INFO L225 Difference]: With dead ends: 11048 [2021-11-13 01:44:16,604 INFO L226 Difference]: Without dead ends: 7030 [2021-11-13 01:44:16,608 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 [2021-11-13 01:44:16,609 INFO L933 BasicCegarLoop]: 1110 mSDtfsCounter, 633 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:16,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 1604 Invalid, 49 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 57.29ms Time] [2021-11-13 01:44:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7030 states. [2021-11-13 01:44:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7030 to 5594. [2021-11-13 01:44:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 5592 states have (on average 1.2920243204577968) internal successors, (7225), 5593 states have internal predecessors, (7225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 7225 transitions. [2021-11-13 01:44:18,806 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 7225 transitions. Word has length 73 [2021-11-13 01:44:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:18,806 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 7225 transitions. [2021-11-13 01:44:18,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 7225 transitions. [2021-11-13 01:44:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:44:18,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:18,809 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] [2021-11-13 01:44:18,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 01:44:18,810 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1153775987, now seen corresponding path program 1 times [2021-11-13 01:44:18,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:18,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324964197] [2021-11-13 01:44:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:18,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:18,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:18,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324964197] [2021-11-13 01:44:18,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324964197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:18,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:18,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:44:18,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079978444] [2021-11-13 01:44:18,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:18,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:44:18,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:44:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:44:18,877 INFO L87 Difference]: Start difference. First operand 5594 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:23,105 INFO L93 Difference]: Finished difference Result 13437 states and 17629 transitions. [2021-11-13 01:44:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:23,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-13 01:44:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:23,117 INFO L225 Difference]: With dead ends: 13437 [2021-11-13 01:44:23,117 INFO L226 Difference]: Without dead ends: 9299 [2021-11-13 01:44:23,123 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 [2021-11-13 01:44:23,123 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 656 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.80ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:23,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 2098 Invalid, 68 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 80.80ms Time] [2021-11-13 01:44:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2021-11-13 01:44:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9297. [2021-11-13 01:44:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9297 states, 9295 states have (on average 1.2882194728348575) internal successors, (11974), 9296 states have internal predecessors, (11974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 11974 transitions. [2021-11-13 01:44:27,106 INFO L78 Accepts]: Start accepts. Automaton has 9297 states and 11974 transitions. Word has length 73 [2021-11-13 01:44:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:27,106 INFO L470 AbstractCegarLoop]: Abstraction has 9297 states and 11974 transitions. [2021-11-13 01:44:27,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 9297 states and 11974 transitions. [2021-11-13 01:44:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:44:27,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:27,113 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] [2021-11-13 01:44:27,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 01:44:27,113 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 771614239, now seen corresponding path program 1 times [2021-11-13 01:44:27,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:27,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613627166] [2021-11-13 01:44:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:27,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:27,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:27,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613627166] [2021-11-13 01:44:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613627166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:27,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:27,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:44:27,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034005172] [2021-11-13 01:44:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:27,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:44:27,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:44:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:44:27,208 INFO L87 Difference]: Start difference. First operand 9297 states and 11974 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:33,836 INFO L93 Difference]: Finished difference Result 20133 states and 26359 transitions. [2021-11-13 01:44:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:44:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-13 01:44:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:33,853 INFO L225 Difference]: With dead ends: 20133 [2021-11-13 01:44:33,853 INFO L226 Difference]: Without dead ends: 12892 [2021-11-13 01:44:33,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:44:33,861 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 2718 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:33,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 1607 Invalid, 189 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [43 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 184.00ms Time] [2021-11-13 01:44:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12892 states. [2021-11-13 01:44:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12892 to 11381. [2021-11-13 01:44:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11381 states, 11379 states have (on average 1.2900079093066175) internal successors, (14679), 11380 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11381 states to 11381 states and 14679 transitions. [2021-11-13 01:44:39,777 INFO L78 Accepts]: Start accepts. Automaton has 11381 states and 14679 transitions. Word has length 73 [2021-11-13 01:44:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 11381 states and 14679 transitions. [2021-11-13 01:44:39,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 11381 states and 14679 transitions. [2021-11-13 01:44:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:44:39,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:39,783 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] [2021-11-13 01:44:39,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 01:44:39,784 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -571162426, now seen corresponding path program 1 times [2021-11-13 01:44:39,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:39,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164826090] [2021-11-13 01:44:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:39,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:39,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:39,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164826090] [2021-11-13 01:44:39,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164826090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:39,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:39,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:44:39,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739130000] [2021-11-13 01:44:39,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:39,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:44:39,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:44:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:44:39,835 INFO L87 Difference]: Start difference. First operand 11381 states and 14679 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:46,226 INFO L93 Difference]: Finished difference Result 21962 states and 28494 transitions. [2021-11-13 01:44:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:44:46,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-13 01:44:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:46,241 INFO L225 Difference]: With dead ends: 21962 [2021-11-13 01:44:46,241 INFO L226 Difference]: Without dead ends: 11965 [2021-11-13 01:44:46,251 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 [2021-11-13 01:44:46,252 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 960 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.17ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:46,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1359 Invalid, 79 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 69.17ms Time] [2021-11-13 01:44:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11965 states. [2021-11-13 01:44:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11965 to 10454. [2021-11-13 01:44:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10452 states have (on average 1.2930539609644087) internal successors, (13515), 10453 states have internal predecessors, (13515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 13515 transitions. [2021-11-13 01:44:51,801 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 13515 transitions. Word has length 74 [2021-11-13 01:44:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:51,801 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 13515 transitions. [2021-11-13 01:44:51,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:44:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 13515 transitions. [2021-11-13 01:44:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 01:44:51,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:51,804 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] [2021-11-13 01:44:51,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 01:44:51,805 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:44:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash -312693235, now seen corresponding path program 1 times [2021-11-13 01:44:51,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:44:51,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492072803] [2021-11-13 01:44:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:51,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:44:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:44:52,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:44:52,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492072803] [2021-11-13 01:44:52,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492072803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:52,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:52,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:44:52,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215276308] [2021-11-13 01:44:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:52,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:44:52,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:44:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:44:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:44:52,066 INFO L87 Difference]: Start difference. First operand 10454 states and 13515 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:15,704 INFO L93 Difference]: Finished difference Result 33406 states and 43144 transitions. [2021-11-13 01:45:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-13 01:45:15,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-13 01:45:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:15,757 INFO L225 Difference]: With dead ends: 33406 [2021-11-13 01:45:15,757 INFO L226 Difference]: Without dead ends: 32689 [2021-11-13 01:45:15,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=655, Invalid=2101, Unknown=0, NotChecked=0, Total=2756 [2021-11-13 01:45:15,766 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 8155 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2041.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8155 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 4377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.46ms SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2456.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:15,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8155 Valid, 3814 Invalid, 4377 Unknown, 0 Unchecked, 24.46ms Time], IncrementalHoareTripleChecker [621 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 2456.78ms Time] [2021-11-13 01:45:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32689 states. [2021-11-13 01:45:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32689 to 10454. [2021-11-13 01:45:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10452 states have (on average 1.292958285495599) internal successors, (13514), 10453 states have internal predecessors, (13514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 13514 transitions. [2021-11-13 01:45:21,968 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 13514 transitions. Word has length 74 [2021-11-13 01:45:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:21,968 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 13514 transitions. [2021-11-13 01:45:21,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 13514 transitions. [2021-11-13 01:45:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:45:21,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:21,970 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] [2021-11-13 01:45:21,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 01:45:21,971 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:45:21,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:21,971 INFO L85 PathProgramCache]: Analyzing trace with hash 4590360, now seen corresponding path program 1 times [2021-11-13 01:45:21,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:45:21,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324665800] [2021-11-13 01:45:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:45:21,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:45:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:22,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:45:22,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324665800] [2021-11-13 01:45:22,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324665800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:22,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:45:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230365477] [2021-11-13 01:45:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:45:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:45:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:45:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:45:22,080 INFO L87 Difference]: Start difference. First operand 10454 states and 13514 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:31,208 INFO L93 Difference]: Finished difference Result 13602 states and 17380 transitions. [2021-11-13 01:45:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:45:31,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:45:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:31,224 INFO L225 Difference]: With dead ends: 13602 [2021-11-13 01:45:31,224 INFO L226 Difference]: Without dead ends: 12925 [2021-11-13 01:45:31,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:45:31,228 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 3770 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1010.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.72ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1253.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:31,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3770 Valid, 2397 Invalid, 2333 Unknown, 0 Unchecked, 14.72ms Time], IncrementalHoareTripleChecker [129 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1253.86ms Time] [2021-11-13 01:45:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2021-11-13 01:45:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 10454. [2021-11-13 01:45:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10452 states have (on average 1.292862610026789) internal successors, (13513), 10453 states have internal predecessors, (13513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 13513 transitions. [2021-11-13 01:45:37,165 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 13513 transitions. Word has length 75 [2021-11-13 01:45:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:37,166 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 13513 transitions. [2021-11-13 01:45:37,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 13513 transitions. [2021-11-13 01:45:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:45:37,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:37,168 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] [2021-11-13 01:45:37,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 01:45:37,169 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:45:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1159060167, now seen corresponding path program 1 times [2021-11-13 01:45:37,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:45:37,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746586677] [2021-11-13 01:45:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:45:37,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:45:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:37,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:45:37,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746586677] [2021-11-13 01:45:37,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746586677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:37,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:37,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:45:37,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189310784] [2021-11-13 01:45:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:37,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:45:37,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:45:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:45:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:45:37,303 INFO L87 Difference]: Start difference. First operand 10454 states and 13513 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:45:49,320 INFO L93 Difference]: Finished difference Result 16657 states and 21345 transitions. [2021-11-13 01:45:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:45:49,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:45:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:45:49,343 INFO L225 Difference]: With dead ends: 16657 [2021-11-13 01:45:49,343 INFO L226 Difference]: Without dead ends: 15969 [2021-11-13 01:45:49,348 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 [2021-11-13 01:45:49,349 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 3163 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1081.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.89ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1336.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:45:49,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3163 Valid, 3038 Invalid, 2801 Unknown, 0 Unchecked, 12.89ms Time], IncrementalHoareTripleChecker [87 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 1336.74ms Time] [2021-11-13 01:45:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15969 states. [2021-11-13 01:45:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15969 to 10454. [2021-11-13 01:45:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10452 states have (on average 1.2927669345579793) internal successors, (13512), 10453 states have internal predecessors, (13512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 13512 transitions. [2021-11-13 01:45:55,401 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 13512 transitions. Word has length 75 [2021-11-13 01:45:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:45:55,402 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 13512 transitions. [2021-11-13 01:45:55,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:45:55,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 13512 transitions. [2021-11-13 01:45:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:45:55,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:45:55,404 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] [2021-11-13 01:45:55,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 01:45:55,404 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:45:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:45:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 484371982, now seen corresponding path program 1 times [2021-11-13 01:45:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:45:55,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837157689] [2021-11-13 01:45:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:45:55,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:45:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:45:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:45:55,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:45:55,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837157689] [2021-11-13 01:45:55,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837157689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:45:55,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:45:55,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:45:55,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978867400] [2021-11-13 01:45:55,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:45:55,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:45:55,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:45:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:45:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:45:55,519 INFO L87 Difference]: Start difference. First operand 10454 states and 13512 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:46:07,921 INFO L93 Difference]: Finished difference Result 16610 states and 21290 transitions. [2021-11-13 01:46:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:46:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:46:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:46:07,946 INFO L225 Difference]: With dead ends: 16610 [2021-11-13 01:46:07,946 INFO L226 Difference]: Without dead ends: 15933 [2021-11-13 01:46:07,951 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 [2021-11-13 01:46:07,951 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 3172 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 960.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3172 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.52ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1191.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:46:07,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3172 Valid, 2470 Invalid, 2294 Unknown, 0 Unchecked, 11.52ms Time], IncrementalHoareTripleChecker [100 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 1191.29ms Time] [2021-11-13 01:46:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-11-13 01:46:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 10454. [2021-11-13 01:46:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10454 states, 10452 states have (on average 1.2926712590891696) internal successors, (13511), 10453 states have internal predecessors, (13511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10454 states to 10454 states and 13511 transitions. [2021-11-13 01:46:15,148 INFO L78 Accepts]: Start accepts. Automaton has 10454 states and 13511 transitions. Word has length 75 [2021-11-13 01:46:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:46:15,149 INFO L470 AbstractCegarLoop]: Abstraction has 10454 states and 13511 transitions. [2021-11-13 01:46:15,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10454 states and 13511 transitions. [2021-11-13 01:46:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:46:15,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:46:15,151 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] [2021-11-13 01:46:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 01:46:15,152 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:46:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:46:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1269088861, now seen corresponding path program 1 times [2021-11-13 01:46:15,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:46:15,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790681461] [2021-11-13 01:46:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:46:15,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:46:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:46:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:15,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:46:15,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790681461] [2021-11-13 01:46:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790681461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:15,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:15,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:46:15,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441201187] [2021-11-13 01:46:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:15,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:46:15,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:46:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:46:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:46:15,379 INFO L87 Difference]: Start difference. First operand 10454 states and 13511 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:46:39,412 INFO L93 Difference]: Finished difference Result 28047 states and 36489 transitions. [2021-11-13 01:46:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-13 01:46:39,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:46:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:46:39,459 INFO L225 Difference]: With dead ends: 28047 [2021-11-13 01:46:39,459 INFO L226 Difference]: Without dead ends: 27359 [2021-11-13 01:46:39,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:46:39,466 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 6849 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2003.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6849 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.06ms SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2437.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:46:39,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6849 Valid, 2894 Invalid, 3557 Unknown, 0 Unchecked, 23.06ms Time], IncrementalHoareTripleChecker [678 Valid, 2879 Invalid, 0 Unknown, 0 Unchecked, 2437.34ms Time] [2021-11-13 01:46:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2021-11-13 01:46:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 10458. [2021-11-13 01:46:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10458 states, 10456 states have (on average 1.2925592960979342) internal successors, (13515), 10457 states have internal predecessors, (13515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10458 states to 10458 states and 13515 transitions. [2021-11-13 01:46:47,180 INFO L78 Accepts]: Start accepts. Automaton has 10458 states and 13515 transitions. Word has length 75 [2021-11-13 01:46:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:46:47,180 INFO L470 AbstractCegarLoop]: Abstraction has 10458 states and 13515 transitions. [2021-11-13 01:46:47,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:46:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10458 states and 13515 transitions. [2021-11-13 01:46:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:46:47,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:46:47,183 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] [2021-11-13 01:46:47,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 01:46:47,183 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:46:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:46:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1308758756, now seen corresponding path program 1 times [2021-11-13 01:46:47,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:46:47,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439025075] [2021-11-13 01:46:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:46:47,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:46:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:46:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:46:47,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:46:47,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439025075] [2021-11-13 01:46:47,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439025075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:46:47,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:46:47,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:46:47,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481447505] [2021-11-13 01:46:47,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:46:47,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:46:47,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:46:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:46:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:46:47,413 INFO L87 Difference]: Start difference. First operand 10458 states and 13515 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:10,829 INFO L93 Difference]: Finished difference Result 26607 states and 34537 transitions. [2021-11-13 01:47:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-13 01:47:10,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:47:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:10,874 INFO L225 Difference]: With dead ends: 26607 [2021-11-13 01:47:10,874 INFO L226 Difference]: Without dead ends: 25927 [2021-11-13 01:47:10,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:47:10,881 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 6895 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1850.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6895 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.02ms SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2246.37ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:10,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6895 Valid, 2633 Invalid, 3270 Unknown, 0 Unchecked, 22.02ms Time], IncrementalHoareTripleChecker [746 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2246.37ms Time] [2021-11-13 01:47:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25927 states. [2021-11-13 01:47:18,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25927 to 10463. [2021-11-13 01:47:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 10461 states have (on average 1.292419462766466) internal successors, (13520), 10462 states have internal predecessors, (13520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 13520 transitions. [2021-11-13 01:47:18,985 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 13520 transitions. Word has length 75 [2021-11-13 01:47:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 10463 states and 13520 transitions. [2021-11-13 01:47:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 13520 transitions. [2021-11-13 01:47:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:47:18,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:18,988 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] [2021-11-13 01:47:18,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 01:47:18,988 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:47:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -939101477, now seen corresponding path program 1 times [2021-11-13 01:47:18,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:47:18,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804885377] [2021-11-13 01:47:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:18,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:47:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:19,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:47:19,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804885377] [2021-11-13 01:47:19,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804885377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:19,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:19,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:47:19,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425496454] [2021-11-13 01:47:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:19,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:47:19,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:47:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:47:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:47:19,059 INFO L87 Difference]: Start difference. First operand 10463 states and 13520 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:47:30,715 INFO L93 Difference]: Finished difference Result 24955 states and 32602 transitions. [2021-11-13 01:47:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:47:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:47:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:47:30,739 INFO L225 Difference]: With dead ends: 24955 [2021-11-13 01:47:30,739 INFO L226 Difference]: Without dead ends: 15945 [2021-11-13 01:47:30,750 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 [2021-11-13 01:47:30,750 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 540 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.73ms IncrementalHoareTripleChecker+Time [2021-11-13 01:47:30,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1477 Invalid, 90 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [38 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 98.73ms Time] [2021-11-13 01:47:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15945 states. [2021-11-13 01:47:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15945 to 14883. [2021-11-13 01:47:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14883 states, 14881 states have (on average 1.2862038841475707) internal successors, (19140), 14882 states have internal predecessors, (19140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14883 states to 14883 states and 19140 transitions. [2021-11-13 01:47:40,572 INFO L78 Accepts]: Start accepts. Automaton has 14883 states and 19140 transitions. Word has length 75 [2021-11-13 01:47:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:47:40,572 INFO L470 AbstractCegarLoop]: Abstraction has 14883 states and 19140 transitions. [2021-11-13 01:47:40,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:47:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14883 states and 19140 transitions. [2021-11-13 01:47:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:47:40,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:47:40,574 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] [2021-11-13 01:47:40,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 01:47:40,575 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:47:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:47:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1494038393, now seen corresponding path program 1 times [2021-11-13 01:47:40,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:47:40,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862413752] [2021-11-13 01:47:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:47:40,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:47:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:47:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:47:40,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:47:40,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862413752] [2021-11-13 01:47:40,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862413752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:47:40,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:47:40,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:47:40,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072989598] [2021-11-13 01:47:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:47:40,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:47:40,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:47:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:47:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:47:40,889 INFO L87 Difference]: Start difference. First operand 14883 states and 19140 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:48:10,899 INFO L93 Difference]: Finished difference Result 37608 states and 48064 transitions. [2021-11-13 01:48:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:48:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-13 01:48:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:48:10,964 INFO L225 Difference]: With dead ends: 37608 [2021-11-13 01:48:10,964 INFO L226 Difference]: Without dead ends: 36602 [2021-11-13 01:48:10,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-11-13 01:48:10,973 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 6506 mSDsluCounter, 6218 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 758.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6506 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.60ms SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.25ms IncrementalHoareTripleChecker+Time [2021-11-13 01:48:10,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6506 Valid, 7121 Invalid, 1585 Unknown, 0 Unchecked, 18.60ms Time], IncrementalHoareTripleChecker [207 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 918.25ms Time] [2021-11-13 01:48:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36602 states. [2021-11-13 01:48:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36602 to 14883. [2021-11-13 01:48:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14883 states, 14881 states have (on average 1.28613668436261) internal successors, (19139), 14882 states have internal predecessors, (19139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14883 states to 14883 states and 19139 transitions. [2021-11-13 01:48:21,956 INFO L78 Accepts]: Start accepts. Automaton has 14883 states and 19139 transitions. Word has length 76 [2021-11-13 01:48:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:48:21,956 INFO L470 AbstractCegarLoop]: Abstraction has 14883 states and 19139 transitions. [2021-11-13 01:48:21,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 14883 states and 19139 transitions. [2021-11-13 01:48:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:48:21,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:48:21,958 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] [2021-11-13 01:48:21,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 01:48:21,958 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:48:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:48:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1206330705, now seen corresponding path program 1 times [2021-11-13 01:48:21,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:48:21,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654575321] [2021-11-13 01:48:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:48:21,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:48:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:48:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:48:23,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:48:23,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654575321] [2021-11-13 01:48:23,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654575321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:48:23,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:48:23,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-13 01:48:23,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842829487] [2021-11-13 01:48:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:48:23,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-13 01:48:23,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:48:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-13 01:48:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-11-13 01:48:23,205 INFO L87 Difference]: Start difference. First operand 14883 states and 19139 transitions. Second operand has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:48:48,782 INFO L93 Difference]: Finished difference Result 25241 states and 32052 transitions. [2021-11-13 01:48:48,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 01:48:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-13 01:48:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:48:48,813 INFO L225 Difference]: With dead ends: 25241 [2021-11-13 01:48:48,813 INFO L226 Difference]: Without dead ends: 24235 [2021-11-13 01:48:48,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2021-11-13 01:48:48,820 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 9638 mSDsluCounter, 21372 mSDsCounter, 0 mSdLazyCounter, 8311 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4230.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9638 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 8503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.89ms SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 8311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4963.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:48:48,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9638 Valid, 22463 Invalid, 8503 Unknown, 0 Unchecked, 60.89ms Time], IncrementalHoareTripleChecker [192 Valid, 8311 Invalid, 0 Unknown, 0 Unchecked, 4963.19ms Time] [2021-11-13 01:48:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24235 states. [2021-11-13 01:48:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24235 to 14891. [2021-11-13 01:48:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14891 states, 14889 states have (on average 1.2861844314594668) internal successors, (19150), 14890 states have internal predecessors, (19150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14891 states to 14891 states and 19150 transitions. [2021-11-13 01:48:59,110 INFO L78 Accepts]: Start accepts. Automaton has 14891 states and 19150 transitions. Word has length 76 [2021-11-13 01:48:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:48:59,110 INFO L470 AbstractCegarLoop]: Abstraction has 14891 states and 19150 transitions. [2021-11-13 01:48:59,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:48:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14891 states and 19150 transitions. [2021-11-13 01:48:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:48:59,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:48:59,112 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] [2021-11-13 01:48:59,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 01:48:59,113 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:48:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:48:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash -717582975, now seen corresponding path program 1 times [2021-11-13 01:48:59,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:48:59,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538581373] [2021-11-13 01:48:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:48:59,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:48:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:48:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:48:59,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:48:59,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538581373] [2021-11-13 01:48:59,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538581373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:48:59,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:48:59,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:48:59,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438447775] [2021-11-13 01:48:59,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:48:59,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:48:59,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:48:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:48:59,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:48:59,215 INFO L87 Difference]: Start difference. First operand 14891 states and 19150 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:49:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:49:14,621 INFO L93 Difference]: Finished difference Result 20237 states and 25671 transitions. [2021-11-13 01:49:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:49:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-13 01:49:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:49:14,645 INFO L225 Difference]: With dead ends: 20237 [2021-11-13 01:49:14,645 INFO L226 Difference]: Without dead ends: 19218 [2021-11-13 01:49:14,649 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 [2021-11-13 01:49:14,649 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 2434 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 963.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.62ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1195.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:49:14,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 2541 Invalid, 2424 Unknown, 0 Unchecked, 11.62ms Time], IncrementalHoareTripleChecker [74 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 1195.81ms Time] [2021-11-13 01:49:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19218 states. [2021-11-13 01:49:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19218 to 14891. [2021-11-13 01:49:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14891 states, 14889 states have (on average 1.2861172677815838) internal successors, (19149), 14890 states have internal predecessors, (19149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:49:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14891 states to 14891 states and 19149 transitions. [2021-11-13 01:49:25,190 INFO L78 Accepts]: Start accepts. Automaton has 14891 states and 19149 transitions. Word has length 76 [2021-11-13 01:49:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:49:25,190 INFO L470 AbstractCegarLoop]: Abstraction has 14891 states and 19149 transitions. [2021-11-13 01:49:25,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:49:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14891 states and 19149 transitions. [2021-11-13 01:49:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 01:49:25,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:49:25,193 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] [2021-11-13 01:49:25,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 01:49:25,193 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:49:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:49:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1679006046, now seen corresponding path program 1 times [2021-11-13 01:49:25,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:49:25,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681080550] [2021-11-13 01:49:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:49:25,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:49:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:49:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:49:25,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:49:25,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681080550] [2021-11-13 01:49:25,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681080550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:49:25,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:49:25,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 01:49:25,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856173760] [2021-11-13 01:49:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:49:25,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:49:25,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:49:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:49:25,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:49:25,672 INFO L87 Difference]: Start difference. First operand 14891 states and 19149 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:50:00,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:50:00,873 INFO L93 Difference]: Finished difference Result 42221 states and 53929 transitions. [2021-11-13 01:50:00,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-13 01:50:00,874 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-13 01:50:00,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:50:00,935 INFO L225 Difference]: With dead ends: 42221 [2021-11-13 01:50:00,935 INFO L226 Difference]: Without dead ends: 41191 [2021-11-13 01:50:00,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:50:00,944 INFO L933 BasicCegarLoop]: 1409 mSDtfsCounter, 8564 mSDsluCounter, 8427 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1106.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8564 SdHoareTripleChecker+Valid, 9657 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.71ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1417.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:50:00,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8564 Valid, 9657 Invalid, 1592 Unknown, 0 Unchecked, 30.71ms Time], IncrementalHoareTripleChecker [208 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1417.13ms Time] [2021-11-13 01:50:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41191 states. [2021-11-13 01:50:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41191 to 14866. [2021-11-13 01:50:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14866 states, 14865 states have (on average 1.286175580221998) internal successors, (19119), 14865 states have internal predecessors, (19119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:50:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14866 states to 14866 states and 19119 transitions. [2021-11-13 01:50:13,416 INFO L78 Accepts]: Start accepts. Automaton has 14866 states and 19119 transitions. Word has length 76 [2021-11-13 01:50:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:50:13,417 INFO L470 AbstractCegarLoop]: Abstraction has 14866 states and 19119 transitions. [2021-11-13 01:50:13,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:50:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14866 states and 19119 transitions. [2021-11-13 01:50:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 01:50:13,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:50:13,419 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] [2021-11-13 01:50:13,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 01:50:13,420 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:50:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:50:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2065395584, now seen corresponding path program 1 times [2021-11-13 01:50:13,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:50:13,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474114526] [2021-11-13 01:50:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:50:13,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:50:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:50:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:50:14,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:50:14,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474114526] [2021-11-13 01:50:14,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474114526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:50:14,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:50:14,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-13 01:50:14,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331437536] [2021-11-13 01:50:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:50:14,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-13 01:50:14,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:50:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-13 01:50:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:50:14,698 INFO L87 Difference]: Start difference. First operand 14866 states and 19119 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:50:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:50:49,295 INFO L93 Difference]: Finished difference Result 29859 states and 37919 transitions. [2021-11-13 01:50:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 01:50:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-13 01:50:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:50:49,341 INFO L225 Difference]: With dead ends: 29859 [2021-11-13 01:50:49,341 INFO L226 Difference]: Without dead ends: 28853 [2021-11-13 01:50:49,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=405, Invalid=2145, Unknown=0, NotChecked=0, Total=2550 [2021-11-13 01:50:49,348 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 11470 mSDsluCounter, 19805 mSDsCounter, 0 mSdLazyCounter, 7862 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4589.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11470 SdHoareTripleChecker+Valid, 20880 SdHoareTripleChecker+Invalid, 8070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.03ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 7862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5407.26ms IncrementalHoareTripleChecker+Time [2021-11-13 01:50:49,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11470 Valid, 20880 Invalid, 8070 Unknown, 0 Unchecked, 72.03ms Time], IncrementalHoareTripleChecker [208 Valid, 7862 Invalid, 0 Unknown, 0 Unchecked, 5407.26ms Time] [2021-11-13 01:50:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28853 states. [2021-11-13 01:51:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28853 to 14884. [2021-11-13 01:51:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14884 states, 14883 states have (on average 1.2862326143922596) internal successors, (19143), 14883 states have internal predecessors, (19143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:51:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14884 states to 14884 states and 19143 transitions. [2021-11-13 01:51:01,521 INFO L78 Accepts]: Start accepts. Automaton has 14884 states and 19143 transitions. Word has length 77 [2021-11-13 01:51:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:51:01,522 INFO L470 AbstractCegarLoop]: Abstraction has 14884 states and 19143 transitions. [2021-11-13 01:51:01,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:51:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 14884 states and 19143 transitions. [2021-11-13 01:51:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 01:51:01,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:51:01,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:51:01,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 01:51:01,525 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:51:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:51:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1123143987, now seen corresponding path program 1 times [2021-11-13 01:51:01,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:51:01,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483956915] [2021-11-13 01:51:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:51:01,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:51:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:51:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:51:02,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:51:02,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483956915] [2021-11-13 01:51:02,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483956915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:51:02,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:51:02,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-13 01:51:02,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704846789] [2021-11-13 01:51:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:51:02,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 01:51:02,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:51:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 01:51:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:51:02,230 INFO L87 Difference]: Start difference. First operand 14884 states and 19143 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:51:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:51:29,214 INFO L93 Difference]: Finished difference Result 26392 states and 33613 transitions. [2021-11-13 01:51:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 01:51:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-13 01:51:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:51:29,255 INFO L225 Difference]: With dead ends: 26392 [2021-11-13 01:51:29,255 INFO L226 Difference]: Without dead ends: 25377 [2021-11-13 01:51:29,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2021-11-13 01:51:29,261 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 5330 mSDsluCounter, 11263 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1663.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5330 SdHoareTripleChecker+Valid, 12405 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.89ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1985.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:51:29,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5330 Valid, 12405 Invalid, 2804 Unknown, 0 Unchecked, 31.89ms Time], IncrementalHoareTripleChecker [101 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1985.91ms Time] [2021-11-13 01:51:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25377 states. [2021-11-13 01:51:41,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25377 to 14878. [2021-11-13 01:51:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14878 states, 14877 states have (on average 1.2861464004839684) internal successors, (19134), 14877 states have internal predecessors, (19134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:51:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14878 states to 14878 states and 19134 transitions. [2021-11-13 01:51:41,940 INFO L78 Accepts]: Start accepts. Automaton has 14878 states and 19134 transitions. Word has length 77 [2021-11-13 01:51:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:51:41,941 INFO L470 AbstractCegarLoop]: Abstraction has 14878 states and 19134 transitions. [2021-11-13 01:51:41,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:51:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14878 states and 19134 transitions. [2021-11-13 01:51:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:51:41,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:51:41,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:51:41,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-13 01:51:41,944 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:51:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:51:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1712478197, now seen corresponding path program 1 times [2021-11-13 01:51:41,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:51:41,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077009573] [2021-11-13 01:51:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:51:41,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:51:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:51:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:51:42,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:51:42,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077009573] [2021-11-13 01:51:42,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077009573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:51:42,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:51:42,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 01:51:42,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232235973] [2021-11-13 01:51:42,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:51:42,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:51:42,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:51:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:51:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:51:42,414 INFO L87 Difference]: Start difference. First operand 14878 states and 19134 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:52:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:52:26,624 INFO L93 Difference]: Finished difference Result 43128 states and 55053 transitions. [2021-11-13 01:52:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-13 01:52:26,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:52:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:52:26,694 INFO L225 Difference]: With dead ends: 43128 [2021-11-13 01:52:26,694 INFO L226 Difference]: Without dead ends: 42094 [2021-11-13 01:52:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 01:52:26,704 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 7308 mSDsluCounter, 7951 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1143.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7308 SdHoareTripleChecker+Valid, 9104 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.24ms SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1373.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:52:26,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7308 Valid, 9104 Invalid, 1611 Unknown, 0 Unchecked, 27.24ms Time], IncrementalHoareTripleChecker [185 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1373.21ms Time] [2021-11-13 01:52:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42094 states. [2021-11-13 01:52:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42094 to 14849. [2021-11-13 01:52:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14849 states, 14848 states have (on average 1.2862338362068966) internal successors, (19098), 14848 states have internal predecessors, (19098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:52:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14849 states to 14849 states and 19098 transitions. [2021-11-13 01:52:39,910 INFO L78 Accepts]: Start accepts. Automaton has 14849 states and 19098 transitions. Word has length 78 [2021-11-13 01:52:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:52:39,910 INFO L470 AbstractCegarLoop]: Abstraction has 14849 states and 19098 transitions. [2021-11-13 01:52:39,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:52:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 14849 states and 19098 transitions. [2021-11-13 01:52:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:52:39,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:52:39,914 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] [2021-11-13 01:52:39,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 01:52:39,915 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:52:39,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:52:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1881094695, now seen corresponding path program 1 times [2021-11-13 01:52:39,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:52:39,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669431590] [2021-11-13 01:52:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:52:39,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:52:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:52:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:52:40,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:52:40,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669431590] [2021-11-13 01:52:40,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669431590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:52:40,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:52:40,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:52:40,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584627276] [2021-11-13 01:52:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:52:40,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:52:40,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:52:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:52:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:52:40,203 INFO L87 Difference]: Start difference. First operand 14849 states and 19098 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:53:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:53:07,378 INFO L93 Difference]: Finished difference Result 27208 states and 34709 transitions. [2021-11-13 01:53:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:53:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:53:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:53:07,420 INFO L225 Difference]: With dead ends: 27208 [2021-11-13 01:53:07,420 INFO L226 Difference]: Without dead ends: 26186 [2021-11-13 01:53:07,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:53:07,428 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 2417 mSDsluCounter, 5918 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 702.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 6978 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.00ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 836.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:53:07,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2417 Valid, 6978 Invalid, 1104 Unknown, 0 Unchecked, 16.00ms Time], IncrementalHoareTripleChecker [62 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 836.60ms Time] [2021-11-13 01:53:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26186 states. [2021-11-13 01:53:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26186 to 14819. [2021-11-13 01:53:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14819 states, 14818 states have (on average 1.2861384802267513) internal successors, (19058), 14818 states have internal predecessors, (19058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:53:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14819 states to 14819 states and 19058 transitions. [2021-11-13 01:53:20,742 INFO L78 Accepts]: Start accepts. Automaton has 14819 states and 19058 transitions. Word has length 78 [2021-11-13 01:53:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:53:20,742 INFO L470 AbstractCegarLoop]: Abstraction has 14819 states and 19058 transitions. [2021-11-13 01:53:20,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:53:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 14819 states and 19058 transitions. [2021-11-13 01:53:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:53:20,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:53:20,745 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] [2021-11-13 01:53:20,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-13 01:53:20,745 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:53:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:53:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1687897718, now seen corresponding path program 1 times [2021-11-13 01:53:20,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:53:20,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101463772] [2021-11-13 01:53:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:53:20,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:53:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:53:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:53:21,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:53:21,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101463772] [2021-11-13 01:53:21,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101463772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:53:21,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:53:21,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:53:21,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818095350] [2021-11-13 01:53:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:53:21,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:53:21,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:53:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:53:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:53:21,199 INFO L87 Difference]: Start difference. First operand 14819 states and 19058 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:53:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:53:52,656 INFO L93 Difference]: Finished difference Result 29572 states and 37671 transitions. [2021-11-13 01:53:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 01:53:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:53:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:53:52,703 INFO L225 Difference]: With dead ends: 29572 [2021-11-13 01:53:52,703 INFO L226 Difference]: Without dead ends: 28524 [2021-11-13 01:53:52,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:53:52,711 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 5437 mSDsluCounter, 5352 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 785.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.30ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 943.78ms IncrementalHoareTripleChecker+Time [2021-11-13 01:53:52,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5437 Valid, 6230 Invalid, 1117 Unknown, 0 Unchecked, 19.30ms Time], IncrementalHoareTripleChecker [61 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 943.78ms Time] [2021-11-13 01:53:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28524 states. [2021-11-13 01:54:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28524 to 14774. [2021-11-13 01:54:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14774 states, 14773 states have (on average 1.2863331753875313) internal successors, (19003), 14773 states have internal predecessors, (19003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:54:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14774 states to 14774 states and 19003 transitions. [2021-11-13 01:54:06,310 INFO L78 Accepts]: Start accepts. Automaton has 14774 states and 19003 transitions. Word has length 78 [2021-11-13 01:54:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:54:06,310 INFO L470 AbstractCegarLoop]: Abstraction has 14774 states and 19003 transitions. [2021-11-13 01:54:06,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:54:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 14774 states and 19003 transitions. [2021-11-13 01:54:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 01:54:06,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:54:06,313 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] [2021-11-13 01:54:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-13 01:54:06,313 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:54:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:54:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1357306291, now seen corresponding path program 1 times [2021-11-13 01:54:06,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:54:06,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607569782] [2021-11-13 01:54:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:06,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:54:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:06,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:54:06,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607569782] [2021-11-13 01:54:06,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607569782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:54:06,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:54:06,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:54:06,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583764002] [2021-11-13 01:54:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:54:06,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:54:06,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:54:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:54:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:54:06,376 INFO L87 Difference]: Start difference. First operand 14774 states and 19003 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:54:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:54:26,308 INFO L93 Difference]: Finished difference Result 35274 states and 45797 transitions. [2021-11-13 01:54:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:54:26,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-13 01:54:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:54:26,341 INFO L225 Difference]: With dead ends: 35274 [2021-11-13 01:54:26,341 INFO L226 Difference]: Without dead ends: 22404 [2021-11-13 01:54:26,352 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 [2021-11-13 01:54:26,352 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 339 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.30ms IncrementalHoareTripleChecker+Time [2021-11-13 01:54:26,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1402 Invalid, 99 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [36 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 111.30ms Time] [2021-11-13 01:54:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22404 states. [2021-11-13 01:54:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22404 to 20887. [2021-11-13 01:54:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20887 states, 20886 states have (on average 1.2781288901656611) internal successors, (26695), 20886 states have internal predecessors, (26695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:54:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20887 states to 20887 states and 26695 transitions. [2021-11-13 01:54:45,102 INFO L78 Accepts]: Start accepts. Automaton has 20887 states and 26695 transitions. Word has length 80 [2021-11-13 01:54:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:54:45,103 INFO L470 AbstractCegarLoop]: Abstraction has 20887 states and 26695 transitions. [2021-11-13 01:54:45,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:54:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 20887 states and 26695 transitions. [2021-11-13 01:54:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:54:45,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:54:45,106 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] [2021-11-13 01:54:45,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-13 01:54:45,106 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-13 01:54:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:54:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash -384189238, now seen corresponding path program 1 times [2021-11-13 01:54:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:54:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792398430] [2021-11-13 01:54:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:54:45,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:54:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:54:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:54:45,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:54:45,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792398430] [2021-11-13 01:54:45,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792398430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:54:45,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:54:45,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:54:45,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165837580] [2021-11-13 01:54:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:54:45,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:54:45,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:54:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:54:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:54:45,264 INFO L87 Difference]: Start difference. First operand 20887 states and 26695 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:55:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:55:37,747 INFO L93 Difference]: Finished difference Result 50858 states and 64362 transitions. [2021-11-13 01:55:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:55:37,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-13 01:55:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:55:37,843 INFO L225 Difference]: With dead ends: 50858 [2021-11-13 01:55:37,843 INFO L226 Difference]: Without dead ends: 50856 [2021-11-13 01:55:37,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:55:37,856 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 4308 mSDsluCounter, 4324 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 529.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.55ms SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 640.52ms IncrementalHoareTripleChecker+Time [2021-11-13 01:55:37,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4308 Valid, 5349 Invalid, 775 Unknown, 0 Unchecked, 20.55ms Time], IncrementalHoareTripleChecker [163 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 640.52ms Time] [2021-11-13 01:55:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50856 states.