./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/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_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/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_b8f9582c-1366-4002-8b0a-082bc0a228cb/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 d144a9b442ad5e7a324b9f0a5b2a5b05c631501eee24b8563227962afec9ac14 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:51:22,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:51:22,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:51:22,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:51:22,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:51:22,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:51:22,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:51:22,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:51:22,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:51:22,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:51:22,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:51:22,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:51:22,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:51:22,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:51:22,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:51:22,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:51:22,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:51:22,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:51:22,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:51:22,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:51:22,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:51:22,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:51:22,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:51:22,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:51:22,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:51:22,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:51:22,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:51:22,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:51:22,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:51:22,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:51:22,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:51:22,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:51:22,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:51:22,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:51:22,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:51:22,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:51:22,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:51:22,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:51:22,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:51:22,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:51:22,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:51:22,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:51:23,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:51:23,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:51:23,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:51:23,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:51:23,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:51:23,040 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:51:23,041 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:51:23,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:51:23,041 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:51:23,041 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:51:23,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:51:23,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:51:23,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:51:23,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:51:23,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:51:23,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:23,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:51:23,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:51:23,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:51:23,046 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d144a9b442ad5e7a324b9f0a5b2a5b05c631501eee24b8563227962afec9ac14 [2021-11-12 23:51:23,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:51:23,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:51:23,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:51:23,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:51:23,367 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:51:23,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:51:23,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/data/d173ff2e3/04deaba8d2574659bbcf95dc7bd6353c/FLAG649189fd2 [2021-11-12 23:51:24,132 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:51:24,133 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:51:24,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/data/d173ff2e3/04deaba8d2574659bbcf95dc7bd6353c/FLAG649189fd2 [2021-11-12 23:51:24,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/data/d173ff2e3/04deaba8d2574659bbcf95dc7bd6353c [2021-11-12 23:51:24,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:51:24,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:51:24,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:24,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:51:24,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:51:24,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:24" (1/1) ... [2021-11-12 23:51:24,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a689cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:24, skipping insertion in model container [2021-11-12 23:51:24,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:51:24" (1/1) ... [2021-11-12 23:51:24,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:51:24,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:51:25,232 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31736,31749] [2021-11-12 23:51:25,255 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32626,32639] [2021-11-12 23:51:25,288 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34328,34341] [2021-11-12 23:51:25,316 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35602,35615] [2021-11-12 23:51:25,482 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48839,48852] [2021-11-12 23:51:25,625 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[57613,57626] [2021-11-12 23:51:25,647 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[58506,58519] [2021-11-12 23:51:25,682 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60211,60224] [2021-11-12 23:51:25,705 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61104,61117] [2021-11-12 23:51:25,757 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63621,63634] [2021-11-12 23:51:25,781 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[64514,64527] [2021-11-12 23:51:25,815 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66219,66232] [2021-11-12 23:51:25,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:25,919 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:51:26,201 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31736,31749] [2021-11-12 23:51:26,220 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32626,32639] [2021-11-12 23:51:26,248 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34328,34341] [2021-11-12 23:51:26,272 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35602,35615] [2021-11-12 23:51:26,414 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48839,48852] [2021-11-12 23:51:26,541 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[57613,57626] [2021-11-12 23:51:26,559 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[58506,58519] [2021-11-12 23:51:26,587 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60211,60224] [2021-11-12 23:51:26,604 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61104,61117] [2021-11-12 23:51:26,641 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63621,63634] [2021-11-12 23:51:26,658 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[64514,64527] [2021-11-12 23:51:26,686 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_b8f9582c-1366-4002-8b0a-082bc0a228cb/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66219,66232] [2021-11-12 23:51:26,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:51:26,770 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:51:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26 WrapperNode [2021-11-12 23:51:26,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:51:26,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:26,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:51:26,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:51:26,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:51:26,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:51:26,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:51:26,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:51:26,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:26,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:27,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:27,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:27,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:51:27,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:51:27,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:51:27,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:51:27,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (1/1) ... [2021-11-12 23:51:27,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:51:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:51:27,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:51:27,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f9582c-1366-4002-8b0a-082bc0a228cb/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:51:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:51:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:51:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:51:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:51:31,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:51:31,028 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:51:31,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:31 BoogieIcfgContainer [2021-11-12 23:51:31,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:51:31,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:51:31,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:51:31,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:51:31,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:51:24" (1/3) ... [2021-11-12 23:51:31,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52827d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:31, skipping insertion in model container [2021-11-12 23:51:31,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:51:26" (2/3) ... [2021-11-12 23:51:31,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52827d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:51:31, skipping insertion in model container [2021-11-12 23:51:31,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:51:31" (3/3) ... [2021-11-12 23:51:31,045 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:51:31,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:51:31,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-12 23:51:31,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:51:31,135 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:51:31,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-12 23:51:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 703 states have (on average 1.7524893314366998) internal successors, (1232), 715 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-12 23:51:31,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:31,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:31,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 915906915, now seen corresponding path program 1 times [2021-11-12 23:51:31,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:31,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003672151] [2021-11-12 23:51:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:31,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:32,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:32,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003672151] [2021-11-12 23:51:32,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003672151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:32,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:32,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:51:32,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116957609] [2021-11-12 23:51:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:32,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:51:32,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:51:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:51:32,805 INFO L87 Difference]: Start difference. First operand has 716 states, 703 states have (on average 1.7524893314366998) internal successors, (1232), 715 states have internal predecessors, (1232), 0 states have call successors, (0), 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 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:33,925 INFO L93 Difference]: Finished difference Result 1952 states and 3344 transitions. [2021-11-12 23:51:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:51:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2021-11-12 23:51:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:33,952 INFO L225 Difference]: With dead ends: 1952 [2021-11-12 23:51:33,952 INFO L226 Difference]: Without dead ends: 1511 [2021-11-12 23:51:33,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:51:33,962 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 2199 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 700.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.18ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 871.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:33,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 4020 Invalid, 525 Unknown, 0 Unchecked, 29.18ms Time], IncrementalHoareTripleChecker [49 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 871.89ms Time] [2021-11-12 23:51:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-11-12 23:51:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1365. [2021-11-12 23:51:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1353 states have (on average 1.4072431633407243) internal successors, (1904), 1364 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1904 transitions. [2021-11-12 23:51:34,099 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1904 transitions. Word has length 267 [2021-11-12 23:51:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1904 transitions. [2021-11-12 23:51:34,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1904 transitions. [2021-11-12 23:51:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-12 23:51:34,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:34,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:34,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:51:34,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash 915475939, now seen corresponding path program 1 times [2021-11-12 23:51:34,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:34,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551172070] [2021-11-12 23:51:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:34,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:34,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:34,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551172070] [2021-11-12 23:51:34,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551172070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:34,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:34,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:34,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100585074] [2021-11-12 23:51:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:34,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:34,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:34,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:34,666 INFO L87 Difference]: Start difference. First operand 1365 states and 1904 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:35,196 INFO L93 Difference]: Finished difference Result 4039 states and 5625 transitions. [2021-11-12 23:51:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2021-11-12 23:51:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:35,216 INFO L225 Difference]: With dead ends: 4039 [2021-11-12 23:51:35,216 INFO L226 Difference]: Without dead ends: 2683 [2021-11-12 23:51:35,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:35,230 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 2029 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.72ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 326.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:35,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 2395 Invalid, 201 Unknown, 0 Unchecked, 11.72ms Time], IncrementalHoareTripleChecker [19 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 326.67ms Time] [2021-11-12 23:51:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-11-12 23:51:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2573. [2021-11-12 23:51:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2561 states have (on average 1.4107770402186646) internal successors, (3613), 2572 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3613 transitions. [2021-11-12 23:51:35,482 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3613 transitions. Word has length 267 [2021-11-12 23:51:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:35,483 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 3613 transitions. [2021-11-12 23:51:35,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3613 transitions. [2021-11-12 23:51:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-12 23:51:35,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:35,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:35,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:51:35,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 97448583, now seen corresponding path program 1 times [2021-11-12 23:51:35,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:35,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525612162] [2021-11-12 23:51:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:35,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:35,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:35,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525612162] [2021-11-12 23:51:35,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525612162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:35,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:35,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:35,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316525556] [2021-11-12 23:51:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:35,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:35,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:35,685 INFO L87 Difference]: Start difference. First operand 2573 states and 3613 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:36,298 INFO L93 Difference]: Finished difference Result 7502 states and 10505 transitions. [2021-11-12 23:51:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:36,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-12 23:51:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:36,331 INFO L225 Difference]: With dead ends: 7502 [2021-11-12 23:51:36,332 INFO L226 Difference]: Without dead ends: 5050 [2021-11-12 23:51:36,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:36,342 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 839 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.41ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 297.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:36,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 2574 Invalid, 189 Unknown, 0 Unchecked, 8.41ms Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 297.03ms Time] [2021-11-12 23:51:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2021-11-12 23:51:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4940. [2021-11-12 23:51:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4940 states, 4928 states have (on average 1.4105113636363635) internal successors, (6951), 4939 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 6951 transitions. [2021-11-12 23:51:36,707 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 6951 transitions. Word has length 269 [2021-11-12 23:51:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:36,708 INFO L470 AbstractCegarLoop]: Abstraction has 4940 states and 6951 transitions. [2021-11-12 23:51:36,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 6951 transitions. [2021-11-12 23:51:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-12 23:51:36,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:36,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:36,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:51:36,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash -220749134, now seen corresponding path program 1 times [2021-11-12 23:51:36,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:36,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666929869] [2021-11-12 23:51:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:36,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:36,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:36,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666929869] [2021-11-12 23:51:36,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666929869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:36,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:36,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:36,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56328294] [2021-11-12 23:51:36,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:36,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:36,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:36,829 INFO L87 Difference]: Start difference. First operand 4940 states and 6951 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:37,680 INFO L93 Difference]: Finished difference Result 14668 states and 20620 transitions. [2021-11-12 23:51:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-12 23:51:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:37,738 INFO L225 Difference]: With dead ends: 14668 [2021-11-12 23:51:37,738 INFO L226 Difference]: Without dead ends: 9860 [2021-11-12 23:51:37,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:37,749 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 950 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:37,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 2692 Invalid, 171 Unknown, 0 Unchecked, 14.34ms Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 261.26ms Time] [2021-11-12 23:51:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9860 states. [2021-11-12 23:51:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9860 to 4943. [2021-11-12 23:51:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4931 states have (on average 1.4102616102210506) internal successors, (6954), 4942 states have internal predecessors, (6954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 6954 transitions. [2021-11-12 23:51:38,204 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 6954 transitions. Word has length 269 [2021-11-12 23:51:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:38,204 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 6954 transitions. [2021-11-12 23:51:38,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 6954 transitions. [2021-11-12 23:51:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-12 23:51:38,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:38,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:38,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:51:38,216 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash -336229839, now seen corresponding path program 1 times [2021-11-12 23:51:38,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:38,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267147834] [2021-11-12 23:51:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:38,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:38,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:38,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267147834] [2021-11-12 23:51:38,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267147834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:38,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:38,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:51:38,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159459616] [2021-11-12 23:51:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:38,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:51:38,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:51:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:38,729 INFO L87 Difference]: Start difference. First operand 4943 states and 6954 transitions. Second operand has 5 states, 5 states have (on average 54.0) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:39,743 INFO L93 Difference]: Finished difference Result 14515 states and 20389 transitions. [2021-11-12 23:51:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:39,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-11-12 23:51:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:39,811 INFO L225 Difference]: With dead ends: 14515 [2021-11-12 23:51:39,811 INFO L226 Difference]: Without dead ends: 9587 [2021-11-12 23:51:39,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:39,820 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 2124 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.81ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:39,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 3252 Invalid, 266 Unknown, 0 Unchecked, 14.81ms Time], IncrementalHoareTripleChecker [18 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 353.53ms Time] [2021-11-12 23:51:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9587 states. [2021-11-12 23:51:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9587 to 9477. [2021-11-12 23:51:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9477 states, 9465 states have (on average 1.4042260961436872) internal successors, (13291), 9476 states have internal predecessors, (13291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9477 states to 9477 states and 13291 transitions. [2021-11-12 23:51:40,548 INFO L78 Accepts]: Start accepts. Automaton has 9477 states and 13291 transitions. Word has length 270 [2021-11-12 23:51:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:40,549 INFO L470 AbstractCegarLoop]: Abstraction has 9477 states and 13291 transitions. [2021-11-12 23:51:40,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9477 states and 13291 transitions. [2021-11-12 23:51:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-12 23:51:40,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:40,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:40,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:51:40,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1386723605, now seen corresponding path program 1 times [2021-11-12 23:51:40,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:40,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143710799] [2021-11-12 23:51:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:40,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:40,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:40,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143710799] [2021-11-12 23:51:40,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143710799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:40,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:40,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:40,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207534387] [2021-11-12 23:51:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:40,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:40,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:40,918 INFO L87 Difference]: Start difference. First operand 9477 states and 13291 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:42,235 INFO L93 Difference]: Finished difference Result 24023 states and 33564 transitions. [2021-11-12 23:51:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2021-11-12 23:51:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:42,273 INFO L225 Difference]: With dead ends: 24023 [2021-11-12 23:51:42,274 INFO L226 Difference]: Without dead ends: 14684 [2021-11-12 23:51:42,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:42,289 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 2017 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 284.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:42,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2017 Valid, 2391 Invalid, 190 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [15 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 284.79ms Time] [2021-11-12 23:51:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14684 states. [2021-11-12 23:51:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14684 to 13962. [2021-11-12 23:51:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13962 states, 13950 states have (on average 1.3832974910394265) internal successors, (19297), 13961 states have internal predecessors, (19297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13962 states to 13962 states and 19297 transitions. [2021-11-12 23:51:43,463 INFO L78 Accepts]: Start accepts. Automaton has 13962 states and 19297 transitions. Word has length 271 [2021-11-12 23:51:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:43,464 INFO L470 AbstractCegarLoop]: Abstraction has 13962 states and 19297 transitions. [2021-11-12 23:51:43,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13962 states and 19297 transitions. [2021-11-12 23:51:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-12 23:51:43,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:43,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:43,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:51:43,495 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -25116370, now seen corresponding path program 1 times [2021-11-12 23:51:43,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:43,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432806883] [2021-11-12 23:51:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:43,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:43,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:43,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432806883] [2021-11-12 23:51:43,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432806883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:43,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:43,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:43,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992426655] [2021-11-12 23:51:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:51:43,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:51:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:51:43,860 INFO L87 Difference]: Start difference. First operand 13962 states and 19297 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:45,725 INFO L93 Difference]: Finished difference Result 41154 states and 56794 transitions. [2021-11-12 23:51:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:51:45,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-12 23:51:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:45,793 INFO L225 Difference]: With dead ends: 41154 [2021-11-12 23:51:45,794 INFO L226 Difference]: Without dead ends: 27334 [2021-11-12 23:51:45,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:51:45,814 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 1994 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.20ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 302.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:45,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 2368 Invalid, 203 Unknown, 0 Unchecked, 10.20ms Time], IncrementalHoareTripleChecker [19 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 302.73ms Time] [2021-11-12 23:51:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27334 states. [2021-11-12 23:51:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27334 to 27224. [2021-11-12 23:51:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27224 states, 27212 states have (on average 1.3750551227399677) internal successors, (37418), 27223 states have internal predecessors, (37418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27224 states to 27224 states and 37418 transitions. [2021-11-12 23:51:47,862 INFO L78 Accepts]: Start accepts. Automaton has 27224 states and 37418 transitions. Word has length 273 [2021-11-12 23:51:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:47,863 INFO L470 AbstractCegarLoop]: Abstraction has 27224 states and 37418 transitions. [2021-11-12 23:51:47,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27224 states and 37418 transitions. [2021-11-12 23:51:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-12 23:51:47,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:47,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:47,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:51:47,909 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1560810679, now seen corresponding path program 1 times [2021-11-12 23:51:47,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:47,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157123551] [2021-11-12 23:51:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:47,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:48,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:48,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157123551] [2021-11-12 23:51:48,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157123551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:48,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:48,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:48,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420478562] [2021-11-12 23:51:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:48,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:48,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:48,024 INFO L87 Difference]: Start difference. First operand 27224 states and 37418 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:51,056 INFO L93 Difference]: Finished difference Result 79019 states and 108231 transitions. [2021-11-12 23:51:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2021-11-12 23:51:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:51,198 INFO L225 Difference]: With dead ends: 79019 [2021-11-12 23:51:51,198 INFO L226 Difference]: Without dead ends: 53357 [2021-11-12 23:51:51,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:51,240 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 822 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.03ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 285.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:51,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2588 Invalid, 184 Unknown, 0 Unchecked, 8.03ms Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 285.80ms Time] [2021-11-12 23:51:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53357 states. [2021-11-12 23:51:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53357 to 53247. [2021-11-12 23:51:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53247 states, 53235 states have (on average 1.3679909833755988) internal successors, (72825), 53246 states have internal predecessors, (72825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53247 states to 53247 states and 72825 transitions. [2021-11-12 23:51:54,264 INFO L78 Accepts]: Start accepts. Automaton has 53247 states and 72825 transitions. Word has length 275 [2021-11-12 23:51:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:54,265 INFO L470 AbstractCegarLoop]: Abstraction has 53247 states and 72825 transitions. [2021-11-12 23:51:54,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 53247 states and 72825 transitions. [2021-11-12 23:51:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-12 23:51:54,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:54,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:54,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:51:54,330 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:51:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1706376724, now seen corresponding path program 1 times [2021-11-12 23:51:54,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:54,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870196121] [2021-11-12 23:51:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:54,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:54,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:54,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870196121] [2021-11-12 23:51:54,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870196121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:54,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:54,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:51:54,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801468726] [2021-11-12 23:51:54,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:54,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:51:54,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:51:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:54,402 INFO L87 Difference]: Start difference. First operand 53247 states and 72825 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:59,294 INFO L93 Difference]: Finished difference Result 157806 states and 215593 transitions. [2021-11-12 23:51:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:51:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2021-11-12 23:51:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:59,525 INFO L225 Difference]: With dead ends: 157806 [2021-11-12 23:51:59,525 INFO L226 Difference]: Without dead ends: 106245 [2021-11-12 23:51:59,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:51:59,853 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 926 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:59,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 2671 Invalid, 168 Unknown, 0 Unchecked, 6.17ms Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 228.91ms Time] [2021-11-12 23:51:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106245 states. [2021-11-12 23:52:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106245 to 53280. [2021-11-12 23:52:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53280 states, 53268 states have (on average 1.3677630096868665) internal successors, (72858), 53279 states have internal predecessors, (72858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53280 states to 53280 states and 72858 transitions. [2021-11-12 23:52:03,569 INFO L78 Accepts]: Start accepts. Automaton has 53280 states and 72858 transitions. Word has length 275 [2021-11-12 23:52:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:03,569 INFO L470 AbstractCegarLoop]: Abstraction has 53280 states and 72858 transitions. [2021-11-12 23:52:03,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 53280 states and 72858 transitions. [2021-11-12 23:52:03,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-12 23:52:03,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:03,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:03,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:52:03,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-12 23:52:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1376050591, now seen corresponding path program 1 times [2021-11-12 23:52:03,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:03,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293240282] [2021-11-12 23:52:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:03,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:04,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:04,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293240282] [2021-11-12 23:52:04,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293240282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:04,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:04,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:52:04,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337399178] [2021-11-12 23:52:04,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:04,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:52:04,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:04,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:52:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:52:04,022 INFO L87 Difference]: Start difference. First operand 53280 states and 72858 transitions. Second operand has 5 states, 5 states have (on average 55.2) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:09,986 INFO L93 Difference]: Finished difference Result 156107 states and 213021 transitions. [2021-11-12 23:52:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:52:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2021-11-12 23:52:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:10,152 INFO L225 Difference]: With dead ends: 156107 [2021-11-12 23:52:10,152 INFO L226 Difference]: Without dead ends: 103027 [2021-11-12 23:52:10,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:52:10,201 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 2940 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.62ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:10,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2940 Valid, 2384 Invalid, 198 Unknown, 0 Unchecked, 8.62ms Time], IncrementalHoareTripleChecker [21 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 286.53ms Time] [2021-11-12 23:52:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103027 states.