./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI --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 930b16bc37a672cceaa805d09eab083d07141f7f88feaee710c310c880a88e07 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:46:19,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:46:19,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:46:19,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:46:19,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:46:19,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:46:19,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:46:19,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:46:19,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:46:19,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:46:19,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:46:19,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:46:19,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:46:19,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:46:19,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:46:19,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:46:19,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:46:19,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:46:19,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:46:19,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:46:19,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:46:19,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:46:19,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:46:19,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:46:19,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:46:19,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:46:19,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:46:19,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:46:19,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:46:19,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:46:19,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:46:19,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:46:19,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:46:19,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:46:19,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:46:19,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:46:19,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:46:19,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:46:19,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:46:19,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:46:19,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:46:19,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:46:19,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:46:19,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:46:19,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:46:19,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:46:19,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:46:19,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:46:19,383 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:46:19,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:46:19,383 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:46:19,383 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:46:19,384 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:46:19,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:46:19,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:46:19,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:46:19,385 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:46:19,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:46:19,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:46:19,386 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:46:19,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:46:19,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:46:19,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:46:19,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:46:19,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:46:19,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:46:19,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:46:19,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:46:19,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:46:19,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:46:19,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:46:19,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:46:19,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:46:19,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:46:19,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:46:19,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:46:19,392 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:46:19,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:46:19,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:46:19,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:46:19,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:46:19,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:46:19,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:46:19,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 930b16bc37a672cceaa805d09eab083d07141f7f88feaee710c310c880a88e07 [2022-11-03 01:46:19,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:46:19,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:46:19,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:46:19,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:46:19,743 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:46:19,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2022-11-03 01:46:19,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/data/5530b20a1/9d62f7696aab4e67a636d0b893ada2e8/FLAG3ac5f1b68 [2022-11-03 01:46:20,594 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:46:20,594 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2022-11-03 01:46:20,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/data/5530b20a1/9d62f7696aab4e67a636d0b893ada2e8/FLAG3ac5f1b68 [2022-11-03 01:46:20,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/data/5530b20a1/9d62f7696aab4e67a636d0b893ada2e8 [2022-11-03 01:46:20,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:46:20,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:46:20,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:46:20,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:46:20,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:46:20,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:20" (1/1) ... [2022-11-03 01:46:20,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7087cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:20, skipping insertion in model container [2022-11-03 01:46:20,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:20" (1/1) ... [2022-11-03 01:46:20,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:46:20,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:46:21,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37686,37699] [2022-11-03 01:46:21,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53661,53674] [2022-11-03 01:46:21,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61658,61671] [2022-11-03 01:46:21,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65640,65653] [2022-11-03 01:46:21,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69487,69500] [2022-11-03 01:46:21,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86510,86523] [2022-11-03 01:46:21,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94544,94557] [2022-11-03 01:46:21,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98563,98576] [2022-11-03 01:46:21,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102447,102460] [2022-11-03 01:46:21,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[106961,106974] [2022-11-03 01:46:21,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[110869,110882] [2022-11-03 01:46:21,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[114888,114901] [2022-11-03 01:46:21,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[118772,118785] [2022-11-03 01:46:21,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[122907,122920] [2022-11-03 01:46:21,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[126958,126971] [2022-11-03 01:46:21,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[130958,130971] [2022-11-03 01:46:22,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:46:22,028 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:46:22,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37686,37699] [2022-11-03 01:46:22,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53661,53674] [2022-11-03 01:46:22,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61658,61671] [2022-11-03 01:46:22,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65640,65653] [2022-11-03 01:46:22,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69487,69500] [2022-11-03 01:46:22,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86510,86523] [2022-11-03 01:46:22,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94544,94557] [2022-11-03 01:46:22,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98563,98576] [2022-11-03 01:46:22,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102447,102460] [2022-11-03 01:46:22,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[106961,106974] [2022-11-03 01:46:22,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[110869,110882] [2022-11-03 01:46:22,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[114888,114901] [2022-11-03 01:46:22,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[118772,118785] [2022-11-03 01:46:22,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[122907,122920] [2022-11-03 01:46:22,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[126958,126971] [2022-11-03 01:46:22,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[130958,130971] [2022-11-03 01:46:22,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:46:22,552 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:46:22,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22 WrapperNode [2022-11-03 01:46:22,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:46:22,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:46:22,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:46:22,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:46:22,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,726 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5834 [2022-11-03 01:46:22,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:46:22,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:46:22,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:46:22,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:46:22,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:46:22,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:46:22,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:46:22,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:46:22,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (1/1) ... [2022-11-03 01:46:22,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:46:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:46:22,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:46:22,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:46:23,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:46:23,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:46:23,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:46:23,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:46:23,422 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:46:23,424 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:46:26,380 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:46:26,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:46:26,570 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:46:26,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:26 BoogieIcfgContainer [2022-11-03 01:46:26,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:46:26,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:46:26,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:46:26,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:46:26,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:46:20" (1/3) ... [2022-11-03 01:46:26,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4633dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:26, skipping insertion in model container [2022-11-03 01:46:26,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:22" (2/3) ... [2022-11-03 01:46:26,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4633dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:26, skipping insertion in model container [2022-11-03 01:46:26,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:26" (3/3) ... [2022-11-03 01:46:26,585 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2022-11-03 01:46:26,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:46:26,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-03 01:46:26,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:46:26,682 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32864941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:46:26,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-03 01:46:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:46:26,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:26,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:26,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash -959725519, now seen corresponding path program 1 times [2022-11-03 01:46:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694694765] [2022-11-03 01:46:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:27,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694694765] [2022-11-03 01:46:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694694765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:27,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:27,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882112660] [2022-11-03 01:46:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:27,561 INFO L87 Difference]: Start difference. First operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:28,566 INFO L93 Difference]: Finished difference Result 1365 states and 2339 transitions. [2022-11-03 01:46:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-03 01:46:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:28,583 INFO L225 Difference]: With dead ends: 1365 [2022-11-03 01:46:28,583 INFO L226 Difference]: Without dead ends: 788 [2022-11-03 01:46:28,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:28,592 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 3888 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3888 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:28,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3888 Valid, 818 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-03 01:46:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2022-11-03 01:46:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 772 states have (on average 1.2681347150259068) internal successors, (979), 787 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 979 transitions. [2022-11-03 01:46:28,684 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 979 transitions. Word has length 72 [2022-11-03 01:46:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:28,684 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 979 transitions. [2022-11-03 01:46:28,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 979 transitions. [2022-11-03 01:46:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:46:28,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:28,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:46:28,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash -968066446, now seen corresponding path program 1 times [2022-11-03 01:46:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:28,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307448162] [2022-11-03 01:46:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:28,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:28,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307448162] [2022-11-03 01:46:28,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307448162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:28,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:28,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841372677] [2022-11-03 01:46:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:28,977 INFO L87 Difference]: Start difference. First operand 788 states and 979 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:29,554 INFO L93 Difference]: Finished difference Result 1061 states and 1325 transitions. [2022-11-03 01:46:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-03 01:46:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:29,558 INFO L225 Difference]: With dead ends: 1061 [2022-11-03 01:46:29,558 INFO L226 Difference]: Without dead ends: 661 [2022-11-03 01:46:29,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:29,565 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2437 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:29,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 436 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:46:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-03 01:46:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-11-03 01:46:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 645 states have (on average 1.2883720930232558) internal successors, (831), 660 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 831 transitions. [2022-11-03 01:46:29,620 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 831 transitions. Word has length 72 [2022-11-03 01:46:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:29,621 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 831 transitions. [2022-11-03 01:46:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 831 transitions. [2022-11-03 01:46:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:46:29,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:29,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:46:29,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1526182328, now seen corresponding path program 1 times [2022-11-03 01:46:29,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:29,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139317997] [2022-11-03 01:46:29,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:29,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:29,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139317997] [2022-11-03 01:46:29,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139317997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:29,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:29,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341362573] [2022-11-03 01:46:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:29,908 INFO L87 Difference]: Start difference. First operand 661 states and 831 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:30,315 INFO L93 Difference]: Finished difference Result 778 states and 957 transitions. [2022-11-03 01:46:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:30,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-03 01:46:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:30,318 INFO L225 Difference]: With dead ends: 778 [2022-11-03 01:46:30,318 INFO L226 Difference]: Without dead ends: 461 [2022-11-03 01:46:30,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:30,320 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1616 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:30,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 336 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:46:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-03 01:46:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2022-11-03 01:46:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.2853932584269663) internal successors, (572), 460 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 572 transitions. [2022-11-03 01:46:30,385 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 572 transitions. Word has length 72 [2022-11-03 01:46:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:30,386 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 572 transitions. [2022-11-03 01:46:30,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 572 transitions. [2022-11-03 01:46:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 01:46:30,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:30,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:46:30,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1953545306, now seen corresponding path program 1 times [2022-11-03 01:46:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:30,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605018807] [2022-11-03 01:46:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:30,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:30,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605018807] [2022-11-03 01:46:30,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605018807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:30,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:30,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:30,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488427850] [2022-11-03 01:46:30,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:30,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:30,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:30,628 INFO L87 Difference]: Start difference. First operand 461 states and 572 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:30,953 INFO L93 Difference]: Finished difference Result 650 states and 805 transitions. [2022-11-03 01:46:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-03 01:46:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:30,958 INFO L225 Difference]: With dead ends: 650 [2022-11-03 01:46:30,958 INFO L226 Difference]: Without dead ends: 409 [2022-11-03 01:46:30,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:30,963 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1463 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:30,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 310 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:46:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-03 01:46:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-11-03 01:46:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 393 states have (on average 1.2926208651399491) internal successors, (508), 408 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 508 transitions. [2022-11-03 01:46:31,016 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 508 transitions. Word has length 74 [2022-11-03 01:46:31,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:31,016 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 508 transitions. [2022-11-03 01:46:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 508 transitions. [2022-11-03 01:46:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 01:46:31,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:31,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:31,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:46:31,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:31,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1983390979, now seen corresponding path program 1 times [2022-11-03 01:46:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:31,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544549210] [2022-11-03 01:46:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:31,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:31,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544549210] [2022-11-03 01:46:31,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544549210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:31,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:31,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:46:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492593058] [2022-11-03 01:46:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:31,178 INFO L87 Difference]: Start difference. First operand 409 states and 508 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:31,628 INFO L93 Difference]: Finished difference Result 616 states and 767 transitions. [2022-11-03 01:46:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:46:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-03 01:46:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:31,631 INFO L225 Difference]: With dead ends: 616 [2022-11-03 01:46:31,631 INFO L226 Difference]: Without dead ends: 401 [2022-11-03 01:46:31,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:31,633 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1358 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:31,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 285 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:46:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-03 01:46:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-03 01:46:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2935064935064935) internal successors, (498), 400 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 498 transitions. [2022-11-03 01:46:31,668 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 498 transitions. Word has length 76 [2022-11-03 01:46:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:31,669 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 498 transitions. [2022-11-03 01:46:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 498 transitions. [2022-11-03 01:46:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:46:31,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:31,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:31,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:46:31,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 802660192, now seen corresponding path program 1 times [2022-11-03 01:46:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:31,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105598817] [2022-11-03 01:46:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:32,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105598817] [2022-11-03 01:46:32,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105598817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:32,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:32,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:46:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026152569] [2022-11-03 01:46:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:32,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:46:32,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:46:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:46:32,235 INFO L87 Difference]: Start difference. First operand 401 states and 498 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:33,033 INFO L93 Difference]: Finished difference Result 757 states and 911 transitions. [2022-11-03 01:46:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:46:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-03 01:46:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:33,037 INFO L225 Difference]: With dead ends: 757 [2022-11-03 01:46:33,037 INFO L226 Difference]: Without dead ends: 549 [2022-11-03 01:46:33,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:46:33,040 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2212 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:33,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 678 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:46:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-03 01:46:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 401. [2022-11-03 01:46:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.290909090909091) internal successors, (497), 400 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 497 transitions. [2022-11-03 01:46:33,116 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 497 transitions. Word has length 78 [2022-11-03 01:46:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:33,118 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 497 transitions. [2022-11-03 01:46:33,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 497 transitions. [2022-11-03 01:46:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:46:33,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:33,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:33,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:46:33,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1668159008, now seen corresponding path program 1 times [2022-11-03 01:46:33,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:33,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512644934] [2022-11-03 01:46:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:33,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:33,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512644934] [2022-11-03 01:46:33,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512644934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:33,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:33,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716703298] [2022-11-03 01:46:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:33,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:33,672 INFO L87 Difference]: Start difference. First operand 401 states and 497 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:34,796 INFO L93 Difference]: Finished difference Result 771 states and 965 transitions. [2022-11-03 01:46:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:46:34,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-03 01:46:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:34,799 INFO L225 Difference]: With dead ends: 771 [2022-11-03 01:46:34,799 INFO L226 Difference]: Without dead ends: 698 [2022-11-03 01:46:34,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:46:34,801 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 2151 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:34,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2151 Valid, 1375 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-03 01:46:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 401. [2022-11-03 01:46:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2883116883116883) internal successors, (496), 400 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 496 transitions. [2022-11-03 01:46:34,851 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 496 transitions. Word has length 78 [2022-11-03 01:46:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:34,851 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 496 transitions. [2022-11-03 01:46:34,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 496 transitions. [2022-11-03 01:46:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:46:34,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:34,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:34,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:46:34,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1675317728, now seen corresponding path program 1 times [2022-11-03 01:46:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:34,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133888233] [2022-11-03 01:46:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:35,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:35,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133888233] [2022-11-03 01:46:35,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133888233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:35,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:35,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706496814] [2022-11-03 01:46:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:35,276 INFO L87 Difference]: Start difference. First operand 401 states and 496 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:36,537 INFO L93 Difference]: Finished difference Result 818 states and 1023 transitions. [2022-11-03 01:46:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-03 01:46:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:36,541 INFO L225 Difference]: With dead ends: 818 [2022-11-03 01:46:36,541 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 01:46:36,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:36,542 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1915 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 2179 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 01:46:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 401. [2022-11-03 01:46:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2857142857142858) internal successors, (495), 400 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 495 transitions. [2022-11-03 01:46:36,602 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 495 transitions. Word has length 78 [2022-11-03 01:46:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:36,603 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 495 transitions. [2022-11-03 01:46:36,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 495 transitions. [2022-11-03 01:46:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 01:46:36,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:36,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:36,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:46:36,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1605144151, now seen corresponding path program 1 times [2022-11-03 01:46:36,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:36,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047698993] [2022-11-03 01:46:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:36,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:36,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047698993] [2022-11-03 01:46:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047698993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:36,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884466387] [2022-11-03 01:46:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:36,969 INFO L87 Difference]: Start difference. First operand 401 states and 495 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:38,090 INFO L93 Difference]: Finished difference Result 744 states and 922 transitions. [2022-11-03 01:46:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-03 01:46:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:38,093 INFO L225 Difference]: With dead ends: 744 [2022-11-03 01:46:38,093 INFO L226 Difference]: Without dead ends: 690 [2022-11-03 01:46:38,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:38,094 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1181 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:38,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1810 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-03 01:46:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 401. [2022-11-03 01:46:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.283116883116883) internal successors, (494), 400 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 494 transitions. [2022-11-03 01:46:38,155 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 494 transitions. Word has length 79 [2022-11-03 01:46:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:38,156 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 494 transitions. [2022-11-03 01:46:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 494 transitions. [2022-11-03 01:46:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:38,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:38,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:46:38,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 968830309, now seen corresponding path program 1 times [2022-11-03 01:46:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:38,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134406430] [2022-11-03 01:46:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:38,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134406430] [2022-11-03 01:46:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134406430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:38,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:38,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:46:38,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278684633] [2022-11-03 01:46:38,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:38,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:46:38,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:38,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:46:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:46:38,833 INFO L87 Difference]: Start difference. First operand 401 states and 494 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:40,766 INFO L93 Difference]: Finished difference Result 885 states and 1102 transitions. [2022-11-03 01:46:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 01:46:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:40,769 INFO L225 Difference]: With dead ends: 885 [2022-11-03 01:46:40,769 INFO L226 Difference]: Without dead ends: 754 [2022-11-03 01:46:40,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:46:40,770 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1991 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:40,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 2290 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 01:46:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-03 01:46:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 401. [2022-11-03 01:46:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2805194805194806) internal successors, (493), 400 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 493 transitions. [2022-11-03 01:46:40,840 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 493 transitions. Word has length 80 [2022-11-03 01:46:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:40,840 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 493 transitions. [2022-11-03 01:46:40,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 493 transitions. [2022-11-03 01:46:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:40,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:40,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:40,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:46:40,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1772365797, now seen corresponding path program 1 times [2022-11-03 01:46:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:40,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669048642] [2022-11-03 01:46:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:41,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669048642] [2022-11-03 01:46:41,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669048642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:41,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:41,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646572163] [2022-11-03 01:46:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:41,147 INFO L87 Difference]: Start difference. First operand 401 states and 493 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:42,383 INFO L93 Difference]: Finished difference Result 780 states and 968 transitions. [2022-11-03 01:46:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:46:42,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:42,386 INFO L225 Difference]: With dead ends: 780 [2022-11-03 01:46:42,386 INFO L226 Difference]: Without dead ends: 698 [2022-11-03 01:46:42,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:46:42,387 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1187 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:42,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1933 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-03 01:46:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 401. [2022-11-03 01:46:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.277922077922078) internal successors, (492), 400 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 492 transitions. [2022-11-03 01:46:42,452 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 492 transitions. Word has length 80 [2022-11-03 01:46:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:42,453 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 492 transitions. [2022-11-03 01:46:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 492 transitions. [2022-11-03 01:46:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:42,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:42,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:46:42,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1109843867, now seen corresponding path program 1 times [2022-11-03 01:46:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023696390] [2022-11-03 01:46:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:42,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023696390] [2022-11-03 01:46:42,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023696390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:42,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:42,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262689598] [2022-11-03 01:46:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:42,783 INFO L87 Difference]: Start difference. First operand 401 states and 492 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:43,931 INFO L93 Difference]: Finished difference Result 748 states and 922 transitions. [2022-11-03 01:46:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:43,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:43,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:43,934 INFO L225 Difference]: With dead ends: 748 [2022-11-03 01:46:43,935 INFO L226 Difference]: Without dead ends: 690 [2022-11-03 01:46:43,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:43,936 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1173 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:43,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1790 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-03 01:46:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 401. [2022-11-03 01:46:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2753246753246754) internal successors, (491), 400 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 491 transitions. [2022-11-03 01:46:44,017 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 491 transitions. Word has length 80 [2022-11-03 01:46:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 491 transitions. [2022-11-03 01:46:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 491 transitions. [2022-11-03 01:46:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:44,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:44,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:46:44,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1167764005, now seen corresponding path program 1 times [2022-11-03 01:46:44,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:44,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610903043] [2022-11-03 01:46:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:44,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:44,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610903043] [2022-11-03 01:46:44,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610903043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:44,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:44,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561188602] [2022-11-03 01:46:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:44,429 INFO L87 Difference]: Start difference. First operand 401 states and 491 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:45,763 INFO L93 Difference]: Finished difference Result 748 states and 922 transitions. [2022-11-03 01:46:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:45,766 INFO L225 Difference]: With dead ends: 748 [2022-11-03 01:46:45,766 INFO L226 Difference]: Without dead ends: 690 [2022-11-03 01:46:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:45,768 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1607 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:45,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1963 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-03 01:46:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 401. [2022-11-03 01:46:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 385 states have (on average 1.2727272727272727) internal successors, (490), 400 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 490 transitions. [2022-11-03 01:46:45,841 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 490 transitions. Word has length 80 [2022-11-03 01:46:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:45,841 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 490 transitions. [2022-11-03 01:46:45,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 490 transitions. [2022-11-03 01:46:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:45,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:45,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:46:45,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash 845800069, now seen corresponding path program 1 times [2022-11-03 01:46:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:45,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282543899] [2022-11-03 01:46:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:46,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:46,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282543899] [2022-11-03 01:46:46,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282543899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:46,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:46,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:46:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743799639] [2022-11-03 01:46:46,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:46,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:46:46,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:46:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:46:46,408 INFO L87 Difference]: Start difference. First operand 401 states and 490 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:49,128 INFO L93 Difference]: Finished difference Result 1100 states and 1382 transitions. [2022-11-03 01:46:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 01:46:49,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:49,133 INFO L225 Difference]: With dead ends: 1100 [2022-11-03 01:46:49,133 INFO L226 Difference]: Without dead ends: 1018 [2022-11-03 01:46:49,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:46:49,135 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 3347 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:49,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3347 Valid, 2201 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 01:46:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-11-03 01:46:49,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 406. [2022-11-03 01:46:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 390 states have (on average 1.2692307692307692) internal successors, (495), 405 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 495 transitions. [2022-11-03 01:46:49,236 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 495 transitions. Word has length 80 [2022-11-03 01:46:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:49,236 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 495 transitions. [2022-11-03 01:46:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 495 transitions. [2022-11-03 01:46:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:49,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:49,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:49,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:46:49,239 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash 319051941, now seen corresponding path program 1 times [2022-11-03 01:46:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:49,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039351127] [2022-11-03 01:46:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:49,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:49,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039351127] [2022-11-03 01:46:49,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039351127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:49,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:49,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014726141] [2022-11-03 01:46:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:49,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:49,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:49,563 INFO L87 Difference]: Start difference. First operand 406 states and 495 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:50,834 INFO L93 Difference]: Finished difference Result 753 states and 925 transitions. [2022-11-03 01:46:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:50,838 INFO L225 Difference]: With dead ends: 753 [2022-11-03 01:46:50,838 INFO L226 Difference]: Without dead ends: 695 [2022-11-03 01:46:50,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:50,842 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1104 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:50,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1914 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-03 01:46:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 406. [2022-11-03 01:46:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 390 states have (on average 1.2666666666666666) internal successors, (494), 405 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 494 transitions. [2022-11-03 01:46:50,958 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 494 transitions. Word has length 80 [2022-11-03 01:46:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:50,958 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 494 transitions. [2022-11-03 01:46:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 494 transitions. [2022-11-03 01:46:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 01:46:50,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:50,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:46:50,961 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 436282523, now seen corresponding path program 1 times [2022-11-03 01:46:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:50,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328466453] [2022-11-03 01:46:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:51,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:51,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328466453] [2022-11-03 01:46:51,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328466453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:51,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:51,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877733300] [2022-11-03 01:46:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:51,351 INFO L87 Difference]: Start difference. First operand 406 states and 494 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:52,660 INFO L93 Difference]: Finished difference Result 723 states and 880 transitions. [2022-11-03 01:46:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 01:46:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:52,667 INFO L225 Difference]: With dead ends: 723 [2022-11-03 01:46:52,667 INFO L226 Difference]: Without dead ends: 678 [2022-11-03 01:46:52,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:52,668 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1609 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:52,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 1802 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-03 01:46:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 405. [2022-11-03 01:46:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.2647814910025708) internal successors, (492), 404 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 492 transitions. [2022-11-03 01:46:52,804 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 492 transitions. Word has length 80 [2022-11-03 01:46:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:52,804 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 492 transitions. [2022-11-03 01:46:52,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 492 transitions. [2022-11-03 01:46:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:52,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:52,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:46:52,807 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1402771346, now seen corresponding path program 1 times [2022-11-03 01:46:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:52,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785773042] [2022-11-03 01:46:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:53,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:53,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785773042] [2022-11-03 01:46:53,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785773042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:53,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:53,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35192666] [2022-11-03 01:46:53,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:53,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:53,209 INFO L87 Difference]: Start difference. First operand 405 states and 492 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:54,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:54,528 INFO L93 Difference]: Finished difference Result 725 states and 881 transitions. [2022-11-03 01:46:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:54,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-03 01:46:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:54,531 INFO L225 Difference]: With dead ends: 725 [2022-11-03 01:46:54,531 INFO L226 Difference]: Without dead ends: 678 [2022-11-03 01:46:54,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:54,534 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1629 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:54,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 1781 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:46:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-03 01:46:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 405. [2022-11-03 01:46:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.262210796915167) internal successors, (491), 404 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 491 transitions. [2022-11-03 01:46:54,653 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 491 transitions. Word has length 81 [2022-11-03 01:46:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:54,654 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 491 transitions. [2022-11-03 01:46:54,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 491 transitions. [2022-11-03 01:46:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:54,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:54,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:46:54,656 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash -737160558, now seen corresponding path program 1 times [2022-11-03 01:46:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:54,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024327288] [2022-11-03 01:46:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:54,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:54,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024327288] [2022-11-03 01:46:54,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024327288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:54,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:54,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701344046] [2022-11-03 01:46:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:54,982 INFO L87 Difference]: Start difference. First operand 405 states and 491 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:56,318 INFO L93 Difference]: Finished difference Result 725 states and 880 transitions. [2022-11-03 01:46:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-03 01:46:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:56,321 INFO L225 Difference]: With dead ends: 725 [2022-11-03 01:46:56,321 INFO L226 Difference]: Without dead ends: 678 [2022-11-03 01:46:56,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:56,322 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1600 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:56,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 1801 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-03 01:46:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 405. [2022-11-03 01:46:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.2596401028277635) internal successors, (490), 404 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 490 transitions. [2022-11-03 01:46:56,448 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 490 transitions. Word has length 81 [2022-11-03 01:46:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:56,448 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 490 transitions. [2022-11-03 01:46:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 490 transitions. [2022-11-03 01:46:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:56,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:56,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 01:46:56,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1997711831, now seen corresponding path program 1 times [2022-11-03 01:46:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:56,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799354736] [2022-11-03 01:46:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:56,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799354736] [2022-11-03 01:46:56,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799354736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:56,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:56,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910340983] [2022-11-03 01:46:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:56,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:56,717 INFO L87 Difference]: Start difference. First operand 405 states and 490 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:57,977 INFO L93 Difference]: Finished difference Result 779 states and 959 transitions. [2022-11-03 01:46:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:46:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-03 01:46:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:57,980 INFO L225 Difference]: With dead ends: 779 [2022-11-03 01:46:57,981 INFO L226 Difference]: Without dead ends: 697 [2022-11-03 01:46:57,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:46:57,984 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1169 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:57,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1881 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:46:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-03 01:46:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 400. [2022-11-03 01:46:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2604166666666667) internal successors, (484), 399 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 484 transitions. [2022-11-03 01:46:58,107 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 484 transitions. Word has length 81 [2022-11-03 01:46:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:58,108 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 484 transitions. [2022-11-03 01:46:58,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 484 transitions. [2022-11-03 01:46:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:58,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:58,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:58,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:46:58,110 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1762485042, now seen corresponding path program 1 times [2022-11-03 01:46:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:58,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929653030] [2022-11-03 01:46:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:58,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:58,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:58,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929653030] [2022-11-03 01:46:58,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929653030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:58,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:58,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:46:58,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603209868] [2022-11-03 01:46:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:58,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:46:58,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:46:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:58,440 INFO L87 Difference]: Start difference. First operand 400 states and 484 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:59,814 INFO L93 Difference]: Finished difference Result 720 states and 873 transitions. [2022-11-03 01:46:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:46:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-03 01:46:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:59,816 INFO L225 Difference]: With dead ends: 720 [2022-11-03 01:46:59,816 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:46:59,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:46:59,817 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1591 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 1891 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:46:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:46:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 400. [2022-11-03 01:46:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2578125) internal successors, (483), 399 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 483 transitions. [2022-11-03 01:46:59,921 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 483 transitions. Word has length 81 [2022-11-03 01:46:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:59,921 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 483 transitions. [2022-11-03 01:46:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:46:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 483 transitions. [2022-11-03 01:46:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 01:46:59,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:59,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:59,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:46:59,924 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:46:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash -818292174, now seen corresponding path program 1 times [2022-11-03 01:46:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331733152] [2022-11-03 01:46:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:00,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:00,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331733152] [2022-11-03 01:47:00,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331733152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:00,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:00,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922756971] [2022-11-03 01:47:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:00,194 INFO L87 Difference]: Start difference. First operand 400 states and 483 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:01,448 INFO L93 Difference]: Finished difference Result 720 states and 872 transitions. [2022-11-03 01:47:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:47:01,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-03 01:47:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:01,451 INFO L225 Difference]: With dead ends: 720 [2022-11-03 01:47:01,452 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:47:01,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:47:01,453 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1242 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:01,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1503 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:47:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 400. [2022-11-03 01:47:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2552083333333333) internal successors, (482), 399 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 482 transitions. [2022-11-03 01:47:01,563 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 482 transitions. Word has length 81 [2022-11-03 01:47:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:01,563 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 482 transitions. [2022-11-03 01:47:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 482 transitions. [2022-11-03 01:47:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:01,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:01,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 01:47:01,566 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1416899414, now seen corresponding path program 1 times [2022-11-03 01:47:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:01,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439157305] [2022-11-03 01:47:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:01,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439157305] [2022-11-03 01:47:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439157305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:01,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:01,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403779391] [2022-11-03 01:47:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:01,863 INFO L87 Difference]: Start difference. First operand 400 states and 482 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:03,122 INFO L93 Difference]: Finished difference Result 679 states and 815 transitions. [2022-11-03 01:47:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:03,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:03,124 INFO L225 Difference]: With dead ends: 679 [2022-11-03 01:47:03,124 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:47:03,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:03,125 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1590 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:03,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 1817 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:47:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:47:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 400. [2022-11-03 01:47:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2526041666666667) internal successors, (481), 399 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 481 transitions. [2022-11-03 01:47:03,249 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 481 transitions. Word has length 82 [2022-11-03 01:47:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:03,249 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 481 transitions. [2022-11-03 01:47:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 481 transitions. [2022-11-03 01:47:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:03,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:03,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:47:03,251 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash 110550506, now seen corresponding path program 1 times [2022-11-03 01:47:03,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:03,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432674651] [2022-11-03 01:47:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:03,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:03,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432674651] [2022-11-03 01:47:03,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432674651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:03,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:03,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542465407] [2022-11-03 01:47:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:03,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:03,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:03,513 INFO L87 Difference]: Start difference. First operand 400 states and 481 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:04,743 INFO L93 Difference]: Finished difference Result 708 states and 855 transitions. [2022-11-03 01:47:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:04,747 INFO L225 Difference]: With dead ends: 708 [2022-11-03 01:47:04,747 INFO L226 Difference]: Without dead ends: 689 [2022-11-03 01:47:04,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:04,748 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1539 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:04,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 1746 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-03 01:47:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 400. [2022-11-03 01:47:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.25) internal successors, (480), 399 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 480 transitions. [2022-11-03 01:47:04,863 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 480 transitions. Word has length 82 [2022-11-03 01:47:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:04,863 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 480 transitions. [2022-11-03 01:47:04,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 480 transitions. [2022-11-03 01:47:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:04,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:04,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:04,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:47:04,865 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash -534325398, now seen corresponding path program 1 times [2022-11-03 01:47:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:04,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36276727] [2022-11-03 01:47:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:05,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36276727] [2022-11-03 01:47:05,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36276727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:05,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:05,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511869063] [2022-11-03 01:47:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:05,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:05,141 INFO L87 Difference]: Start difference. First operand 400 states and 480 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:06,414 INFO L93 Difference]: Finished difference Result 679 states and 813 transitions. [2022-11-03 01:47:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:47:06,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:06,416 INFO L225 Difference]: With dead ends: 679 [2022-11-03 01:47:06,416 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:47:06,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:47:06,417 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1759 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:06,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 1556 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:47:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 400. [2022-11-03 01:47:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 399 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 479 transitions. [2022-11-03 01:47:06,530 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 479 transitions. Word has length 82 [2022-11-03 01:47:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:06,531 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 479 transitions. [2022-11-03 01:47:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 479 transitions. [2022-11-03 01:47:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:06,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:06,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:06,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 01:47:06,532 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1378881558, now seen corresponding path program 1 times [2022-11-03 01:47:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277696376] [2022-11-03 01:47:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:06,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277696376] [2022-11-03 01:47:06,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277696376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:06,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:06,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388113793] [2022-11-03 01:47:06,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:06,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:06,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:06,835 INFO L87 Difference]: Start difference. First operand 400 states and 479 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:08,164 INFO L93 Difference]: Finished difference Result 723 states and 869 transitions. [2022-11-03 01:47:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:08,167 INFO L225 Difference]: With dead ends: 723 [2022-11-03 01:47:08,167 INFO L226 Difference]: Without dead ends: 673 [2022-11-03 01:47:08,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:08,169 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1567 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:08,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1882 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:47:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-03 01:47:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 400. [2022-11-03 01:47:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2447916666666667) internal successors, (478), 399 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 478 transitions. [2022-11-03 01:47:08,289 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 478 transitions. Word has length 82 [2022-11-03 01:47:08,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:08,290 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 478 transitions. [2022-11-03 01:47:08,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 478 transitions. [2022-11-03 01:47:08,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:08,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:08,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:08,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 01:47:08,292 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 148568362, now seen corresponding path program 1 times [2022-11-03 01:47:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:08,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128183692] [2022-11-03 01:47:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:08,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:08,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128183692] [2022-11-03 01:47:08,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128183692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:08,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:08,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837330438] [2022-11-03 01:47:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:08,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:08,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:08,543 INFO L87 Difference]: Start difference. First operand 400 states and 478 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:09,764 INFO L93 Difference]: Finished difference Result 752 states and 909 transitions. [2022-11-03 01:47:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:09,767 INFO L225 Difference]: With dead ends: 752 [2022-11-03 01:47:09,767 INFO L226 Difference]: Without dead ends: 689 [2022-11-03 01:47:09,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:09,767 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1139 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:09,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1950 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-03 01:47:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 400. [2022-11-03 01:47:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 384 states have (on average 1.2421875) internal successors, (477), 399 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 477 transitions. [2022-11-03 01:47:09,917 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 477 transitions. Word has length 82 [2022-11-03 01:47:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:09,917 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 477 transitions. [2022-11-03 01:47:09,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 477 transitions. [2022-11-03 01:47:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:09,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:09,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:09,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 01:47:09,919 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1321164118, now seen corresponding path program 1 times [2022-11-03 01:47:09,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:09,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128940336] [2022-11-03 01:47:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:09,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:10,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128940336] [2022-11-03 01:47:10,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128940336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:10,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:10,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:47:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961731171] [2022-11-03 01:47:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:47:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:47:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:47:10,406 INFO L87 Difference]: Start difference. First operand 400 states and 477 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:13,147 INFO L93 Difference]: Finished difference Result 1104 states and 1365 transitions. [2022-11-03 01:47:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 01:47:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:13,153 INFO L225 Difference]: With dead ends: 1104 [2022-11-03 01:47:13,153 INFO L226 Difference]: Without dead ends: 1016 [2022-11-03 01:47:13,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:47:13,154 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 3080 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3080 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:13,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3080 Valid, 2238 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 01:47:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-11-03 01:47:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 405. [2022-11-03 01:47:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.2390745501285347) internal successors, (482), 404 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 482 transitions. [2022-11-03 01:47:13,310 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 482 transitions. Word has length 82 [2022-11-03 01:47:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:13,311 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 482 transitions. [2022-11-03 01:47:13,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 482 transitions. [2022-11-03 01:47:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:13,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:13,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:13,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 01:47:13,313 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash -378154710, now seen corresponding path program 1 times [2022-11-03 01:47:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:13,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005948345] [2022-11-03 01:47:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:13,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:13,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005948345] [2022-11-03 01:47:13,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005948345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:13,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:13,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:13,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706679975] [2022-11-03 01:47:13,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:13,598 INFO L87 Difference]: Start difference. First operand 405 states and 482 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:14,944 INFO L93 Difference]: Finished difference Result 728 states and 872 transitions. [2022-11-03 01:47:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:14,947 INFO L225 Difference]: With dead ends: 728 [2022-11-03 01:47:14,947 INFO L226 Difference]: Without dead ends: 678 [2022-11-03 01:47:14,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:14,948 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1558 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:14,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1945 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-03 01:47:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 405. [2022-11-03 01:47:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.236503856041131) internal successors, (481), 404 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 481 transitions. [2022-11-03 01:47:15,056 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 481 transitions. Word has length 82 [2022-11-03 01:47:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:15,057 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 481 transitions. [2022-11-03 01:47:15,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 481 transitions. [2022-11-03 01:47:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:15,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:15,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:15,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 01:47:15,059 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 637597674, now seen corresponding path program 1 times [2022-11-03 01:47:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:15,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261597990] [2022-11-03 01:47:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:15,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261597990] [2022-11-03 01:47:15,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261597990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:15,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:15,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522272885] [2022-11-03 01:47:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:15,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:15,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:15,313 INFO L87 Difference]: Start difference. First operand 405 states and 481 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:16,583 INFO L93 Difference]: Finished difference Result 757 states and 911 transitions. [2022-11-03 01:47:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:16,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:16,585 INFO L225 Difference]: With dead ends: 757 [2022-11-03 01:47:16,585 INFO L226 Difference]: Without dead ends: 694 [2022-11-03 01:47:16,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:16,586 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1526 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:16,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1760 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-03 01:47:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 405. [2022-11-03 01:47:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 389 states have (on average 1.2339331619537275) internal successors, (480), 404 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 480 transitions. [2022-11-03 01:47:16,704 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 480 transitions. Word has length 82 [2022-11-03 01:47:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:16,704 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 480 transitions. [2022-11-03 01:47:16,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 480 transitions. [2022-11-03 01:47:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:16,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:16,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 01:47:16,706 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash -586374390, now seen corresponding path program 1 times [2022-11-03 01:47:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:16,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398450564] [2022-11-03 01:47:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:17,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398450564] [2022-11-03 01:47:17,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398450564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:17,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:17,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:47:17,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652859758] [2022-11-03 01:47:17,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:17,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:47:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:47:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:47:17,148 INFO L87 Difference]: Start difference. First operand 405 states and 480 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:19,783 INFO L93 Difference]: Finished difference Result 961 states and 1172 transitions. [2022-11-03 01:47:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 01:47:19,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:19,788 INFO L225 Difference]: With dead ends: 961 [2022-11-03 01:47:19,788 INFO L226 Difference]: Without dead ends: 911 [2022-11-03 01:47:19,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:47:19,789 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 3004 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3004 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:19,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3004 Valid, 2192 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 01:47:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-11-03 01:47:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 410. [2022-11-03 01:47:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 394 states have (on average 1.2309644670050761) internal successors, (485), 409 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 485 transitions. [2022-11-03 01:47:19,922 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 485 transitions. Word has length 82 [2022-11-03 01:47:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:19,923 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 485 transitions. [2022-11-03 01:47:19,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 485 transitions. [2022-11-03 01:47:19,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 01:47:19,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:19,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 01:47:19,925 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1027878550, now seen corresponding path program 1 times [2022-11-03 01:47:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:19,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999062864] [2022-11-03 01:47:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:20,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:20,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999062864] [2022-11-03 01:47:20,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999062864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:20,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:20,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:20,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016295468] [2022-11-03 01:47:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:20,174 INFO L87 Difference]: Start difference. First operand 410 states and 485 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:21,528 INFO L93 Difference]: Finished difference Result 684 states and 811 transitions. [2022-11-03 01:47:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:47:21,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-03 01:47:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:21,531 INFO L225 Difference]: With dead ends: 684 [2022-11-03 01:47:21,531 INFO L226 Difference]: Without dead ends: 678 [2022-11-03 01:47:21,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:47:21,532 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1662 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:21,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1658 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-11-03 01:47:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 410. [2022-11-03 01:47:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 394 states have (on average 1.2284263959390862) internal successors, (484), 409 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 484 transitions. [2022-11-03 01:47:21,688 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 484 transitions. Word has length 82 [2022-11-03 01:47:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:21,688 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 484 transitions. [2022-11-03 01:47:21,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 484 transitions. [2022-11-03 01:47:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:21,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:21,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:21,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 01:47:21,690 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1377145907, now seen corresponding path program 1 times [2022-11-03 01:47:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:21,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136336821] [2022-11-03 01:47:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:22,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136336821] [2022-11-03 01:47:22,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136336821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:22,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:22,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444641537] [2022-11-03 01:47:22,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:22,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:22,337 INFO L87 Difference]: Start difference. First operand 410 states and 484 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:23,781 INFO L93 Difference]: Finished difference Result 940 states and 1140 transitions. [2022-11-03 01:47:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:23,785 INFO L225 Difference]: With dead ends: 940 [2022-11-03 01:47:23,785 INFO L226 Difference]: Without dead ends: 826 [2022-11-03 01:47:23,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:23,786 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 2729 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 3188 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:47:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-03 01:47:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 340. [2022-11-03 01:47:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 328 states have (on average 1.225609756097561) internal successors, (402), 339 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 402 transitions. [2022-11-03 01:47:23,920 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 402 transitions. Word has length 83 [2022-11-03 01:47:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:23,920 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 402 transitions. [2022-11-03 01:47:23,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 402 transitions. [2022-11-03 01:47:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:23,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:23,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:23,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 01:47:23,922 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1042213600, now seen corresponding path program 1 times [2022-11-03 01:47:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743094850] [2022-11-03 01:47:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:24,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:24,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743094850] [2022-11-03 01:47:24,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743094850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:24,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850479039] [2022-11-03 01:47:24,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:24,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:24,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:24,175 INFO L87 Difference]: Start difference. First operand 340 states and 402 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:25,523 INFO L93 Difference]: Finished difference Result 725 states and 876 transitions. [2022-11-03 01:47:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:47:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:25,526 INFO L225 Difference]: With dead ends: 725 [2022-11-03 01:47:25,526 INFO L226 Difference]: Without dead ends: 637 [2022-11-03 01:47:25,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:47:25,527 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1011 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:25,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1617 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:47:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-03 01:47:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 335. [2022-11-03 01:47:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 323 states have (on average 1.2260061919504643) internal successors, (396), 334 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 396 transitions. [2022-11-03 01:47:25,665 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 396 transitions. Word has length 83 [2022-11-03 01:47:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:25,666 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 396 transitions. [2022-11-03 01:47:25,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 396 transitions. [2022-11-03 01:47:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:25,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:25,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 01:47:25,667 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -199769875, now seen corresponding path program 1 times [2022-11-03 01:47:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:25,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516264430] [2022-11-03 01:47:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:26,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:26,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516264430] [2022-11-03 01:47:26,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516264430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:26,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:26,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969051812] [2022-11-03 01:47:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:26,312 INFO L87 Difference]: Start difference. First operand 335 states and 396 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:28,229 INFO L93 Difference]: Finished difference Result 703 states and 853 transitions. [2022-11-03 01:47:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:28,231 INFO L225 Difference]: With dead ends: 703 [2022-11-03 01:47:28,231 INFO L226 Difference]: Without dead ends: 658 [2022-11-03 01:47:28,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:28,232 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1855 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:28,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 2871 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-03 01:47:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 334. [2022-11-03 01:47:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 322 states have (on average 1.2236024844720497) internal successors, (394), 333 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 394 transitions. [2022-11-03 01:47:28,369 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 394 transitions. Word has length 83 [2022-11-03 01:47:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:28,370 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 394 transitions. [2022-11-03 01:47:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 394 transitions. [2022-11-03 01:47:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:28,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:28,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 01:47:28,372 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1097921229, now seen corresponding path program 1 times [2022-11-03 01:47:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:28,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106361159] [2022-11-03 01:47:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:28,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:28,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106361159] [2022-11-03 01:47:28,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106361159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:28,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:28,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885062739] [2022-11-03 01:47:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:28,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:28,963 INFO L87 Difference]: Start difference. First operand 334 states and 394 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:30,781 INFO L93 Difference]: Finished difference Result 702 states and 851 transitions. [2022-11-03 01:47:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:30,783 INFO L225 Difference]: With dead ends: 702 [2022-11-03 01:47:30,783 INFO L226 Difference]: Without dead ends: 657 [2022-11-03 01:47:30,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:30,784 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 2178 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:30,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 2761 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-03 01:47:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 333. [2022-11-03 01:47:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 321 states have (on average 1.2211838006230529) internal successors, (392), 332 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 392 transitions. [2022-11-03 01:47:30,928 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 392 transitions. Word has length 83 [2022-11-03 01:47:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:30,929 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 392 transitions. [2022-11-03 01:47:30,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 392 transitions. [2022-11-03 01:47:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:30,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:30,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:30,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 01:47:30,930 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1397509459, now seen corresponding path program 1 times [2022-11-03 01:47:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:30,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700952819] [2022-11-03 01:47:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:31,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700952819] [2022-11-03 01:47:31,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700952819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:31,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:31,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:47:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77341398] [2022-11-03 01:47:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:47:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:47:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:47:31,516 INFO L87 Difference]: Start difference. First operand 333 states and 392 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:33,810 INFO L93 Difference]: Finished difference Result 1101 states and 1340 transitions. [2022-11-03 01:47:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 01:47:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:33,816 INFO L225 Difference]: With dead ends: 1101 [2022-11-03 01:47:33,816 INFO L226 Difference]: Without dead ends: 1025 [2022-11-03 01:47:33,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:47:33,817 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2271 mSDsluCounter, 5936 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 6736 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:33,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 6736 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-03 01:47:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 301. [2022-11-03 01:47:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 290 states have (on average 1.2137931034482758) internal successors, (352), 300 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 352 transitions. [2022-11-03 01:47:33,983 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 352 transitions. Word has length 83 [2022-11-03 01:47:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:33,983 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 352 transitions. [2022-11-03 01:47:33,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 352 transitions. [2022-11-03 01:47:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:33,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:33,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:33,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 01:47:33,984 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2096908269, now seen corresponding path program 1 times [2022-11-03 01:47:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:33,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312296093] [2022-11-03 01:47:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:34,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312296093] [2022-11-03 01:47:34,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312296093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:34,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:34,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743273622] [2022-11-03 01:47:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:34,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:34,528 INFO L87 Difference]: Start difference. First operand 301 states and 352 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:36,066 INFO L93 Difference]: Finished difference Result 704 states and 854 transitions. [2022-11-03 01:47:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-03 01:47:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:36,070 INFO L225 Difference]: With dead ends: 704 [2022-11-03 01:47:36,070 INFO L226 Difference]: Without dead ends: 605 [2022-11-03 01:47:36,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:36,072 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1741 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:36,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 3542 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:47:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-03 01:47:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 246. [2022-11-03 01:47:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 236 states have (on average 1.1991525423728813) internal successors, (283), 245 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 283 transitions. [2022-11-03 01:47:36,193 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 283 transitions. Word has length 83 [2022-11-03 01:47:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:36,193 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 283 transitions. [2022-11-03 01:47:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 283 transitions. [2022-11-03 01:47:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 01:47:36,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:36,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:36,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 01:47:36,195 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2131684943, now seen corresponding path program 1 times [2022-11-03 01:47:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50399381] [2022-11-03 01:47:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:36,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:36,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:36,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50399381] [2022-11-03 01:47:36,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50399381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:36,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:36,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:36,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474891708] [2022-11-03 01:47:36,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:36,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:36,782 INFO L87 Difference]: Start difference. First operand 246 states and 283 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:37,832 INFO L93 Difference]: Finished difference Result 404 states and 472 transitions. [2022-11-03 01:47:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:47:37,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-03 01:47:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:37,834 INFO L225 Difference]: With dead ends: 404 [2022-11-03 01:47:37,834 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 01:47:37,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:47:37,835 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1397 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:37,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1661 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:47:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 01:47:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 242. [2022-11-03 01:47:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 233 states have (on average 1.1931330472103003) internal successors, (278), 241 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2022-11-03 01:47:37,970 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 84 [2022-11-03 01:47:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:37,970 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2022-11-03 01:47:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2022-11-03 01:47:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 01:47:37,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:37,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:37,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-03 01:47:37,971 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1223733489, now seen corresponding path program 1 times [2022-11-03 01:47:37,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:37,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273644073] [2022-11-03 01:47:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:38,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:38,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273644073] [2022-11-03 01:47:38,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273644073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:38,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:38,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:47:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829195711] [2022-11-03 01:47:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:38,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:47:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:47:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:47:38,549 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:40,916 INFO L93 Difference]: Finished difference Result 933 states and 1135 transitions. [2022-11-03 01:47:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 01:47:40,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-03 01:47:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:40,919 INFO L225 Difference]: With dead ends: 933 [2022-11-03 01:47:40,920 INFO L226 Difference]: Without dead ends: 854 [2022-11-03 01:47:40,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:47:40,921 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 1129 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:40,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 6994 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:47:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-03 01:47:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 207. [2022-11-03 01:47:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.1791044776119404) internal successors, (237), 206 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2022-11-03 01:47:41,058 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 84 [2022-11-03 01:47:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:41,058 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2022-11-03 01:47:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2022-11-03 01:47:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 01:47:41,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:41,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:41,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-03 01:47:41,060 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1559722417, now seen corresponding path program 1 times [2022-11-03 01:47:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:41,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16849797] [2022-11-03 01:47:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:41,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:41,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:41,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16849797] [2022-11-03 01:47:41,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16849797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:41,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:41,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 01:47:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153213280] [2022-11-03 01:47:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:41,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:47:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:47:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:47:41,812 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:43,684 INFO L93 Difference]: Finished difference Result 604 states and 724 transitions. [2022-11-03 01:47:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 01:47:43,685 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-03 01:47:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:43,686 INFO L225 Difference]: With dead ends: 604 [2022-11-03 01:47:43,687 INFO L226 Difference]: Without dead ends: 515 [2022-11-03 01:47:43,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:47:43,688 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1885 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:43,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 2898 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:47:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-03 01:47:43,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 207. [2022-11-03 01:47:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.1741293532338308) internal successors, (236), 206 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2022-11-03 01:47:43,819 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 84 [2022-11-03 01:47:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:43,819 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2022-11-03 01:47:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2022-11-03 01:47:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 01:47:43,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:43,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-03 01:47:43,820 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1570867187, now seen corresponding path program 1 times [2022-11-03 01:47:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:43,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641207693] [2022-11-03 01:47:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:43,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:44,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641207693] [2022-11-03 01:47:44,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641207693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:44,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:44,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:47:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478853768] [2022-11-03 01:47:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:47:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:47:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:47:44,433 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:46,966 INFO L93 Difference]: Finished difference Result 797 states and 974 transitions. [2022-11-03 01:47:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 01:47:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-03 01:47:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:46,969 INFO L225 Difference]: With dead ends: 797 [2022-11-03 01:47:46,970 INFO L226 Difference]: Without dead ends: 742 [2022-11-03 01:47:46,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:47:46,971 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1425 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:46,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 4466 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:47:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-03 01:47:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 196. [2022-11-03 01:47:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.1675392670157068) internal successors, (223), 195 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 223 transitions. [2022-11-03 01:47:47,106 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 223 transitions. Word has length 85 [2022-11-03 01:47:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 223 transitions. [2022-11-03 01:47:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 223 transitions. [2022-11-03 01:47:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 01:47:47,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:47,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 01:47:47,108 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:47,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1029208973, now seen corresponding path program 1 times [2022-11-03 01:47:47,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:47,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220834160] [2022-11-03 01:47:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:47,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:47,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220834160] [2022-11-03 01:47:47,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220834160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:47,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:47,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 01:47:47,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584366776] [2022-11-03 01:47:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:47:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:47:47,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:47:47,870 INFO L87 Difference]: Start difference. First operand 196 states and 223 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:49,565 INFO L93 Difference]: Finished difference Result 400 states and 473 transitions. [2022-11-03 01:47:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:47:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-03 01:47:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:49,566 INFO L225 Difference]: With dead ends: 400 [2022-11-03 01:47:49,566 INFO L226 Difference]: Without dead ends: 318 [2022-11-03 01:47:49,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:47:49,567 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1026 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2252 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:47:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-03 01:47:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 158. [2022-11-03 01:47:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 155 states have (on average 1.1612903225806452) internal successors, (180), 157 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 180 transitions. [2022-11-03 01:47:49,685 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 180 transitions. Word has length 85 [2022-11-03 01:47:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:49,685 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 180 transitions. [2022-11-03 01:47:49,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 180 transitions. [2022-11-03 01:47:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:47:49,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:49,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-03 01:47:49,687 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash 458104271, now seen corresponding path program 1 times [2022-11-03 01:47:49,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:49,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918820278] [2022-11-03 01:47:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:49,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:49,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918820278] [2022-11-03 01:47:49,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918820278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:49,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:49,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:49,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516347852] [2022-11-03 01:47:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:49,970 INFO L87 Difference]: Start difference. First operand 158 states and 180 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:50,671 INFO L93 Difference]: Finished difference Result 233 states and 269 transitions. [2022-11-03 01:47:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:47:50,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-03 01:47:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:50,672 INFO L225 Difference]: With dead ends: 233 [2022-11-03 01:47:50,672 INFO L226 Difference]: Without dead ends: 225 [2022-11-03 01:47:50,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:47:50,673 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 534 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:50,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 578 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:47:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-03 01:47:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 158. [2022-11-03 01:47:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 155 states have (on average 1.1548387096774193) internal successors, (179), 157 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 179 transitions. [2022-11-03 01:47:50,803 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 179 transitions. Word has length 86 [2022-11-03 01:47:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:50,803 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 179 transitions. [2022-11-03 01:47:50,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 179 transitions. [2022-11-03 01:47:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:47:50,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:50,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-03 01:47:50,804 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1517009585, now seen corresponding path program 1 times [2022-11-03 01:47:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:50,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537939793] [2022-11-03 01:47:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:50,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:50,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537939793] [2022-11-03 01:47:50,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537939793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:50,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:50,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:50,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267160140] [2022-11-03 01:47:50,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:50,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:50,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:50,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:50,996 INFO L87 Difference]: Start difference. First operand 158 states and 179 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:51,733 INFO L93 Difference]: Finished difference Result 309 states and 363 transitions. [2022-11-03 01:47:51,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:47:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-03 01:47:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:51,734 INFO L225 Difference]: With dead ends: 309 [2022-11-03 01:47:51,734 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 01:47:51,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:47:51,735 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 623 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:51,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 544 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:47:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 01:47:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 158. [2022-11-03 01:47:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 155 states have (on average 1.1483870967741936) internal successors, (178), 157 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2022-11-03 01:47:51,855 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 86 [2022-11-03 01:47:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:51,855 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2022-11-03 01:47:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2022-11-03 01:47:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 01:47:51,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:51,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:51,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-03 01:47:51,856 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 615115764, now seen corresponding path program 1 times [2022-11-03 01:47:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577140200] [2022-11-03 01:47:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:52,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577140200] [2022-11-03 01:47:52,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577140200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:52,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:52,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:47:52,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400842275] [2022-11-03 01:47:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:52,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:52,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:52,354 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:53,618 INFO L93 Difference]: Finished difference Result 321 states and 383 transitions. [2022-11-03 01:47:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:47:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-03 01:47:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:53,619 INFO L225 Difference]: With dead ends: 321 [2022-11-03 01:47:53,619 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 01:47:53,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:53,619 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 773 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:53,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1473 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:47:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 01:47:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 152. [2022-11-03 01:47:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.1466666666666667) internal successors, (172), 151 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2022-11-03 01:47:53,760 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 88 [2022-11-03 01:47:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:53,760 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2022-11-03 01:47:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2022-11-03 01:47:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 01:47:53,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:53,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:53,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 01:47:53,762 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:47:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1522049356, now seen corresponding path program 1 times [2022-11-03 01:47:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144084924] [2022-11-03 01:47:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:53,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:55,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:55,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144084924] [2022-11-03 01:47:55,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144084924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:55,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:55,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 01:47:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854238118] [2022-11-03 01:47:55,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 01:47:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 01:47:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:47:55,292 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:47:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:59,980 INFO L93 Difference]: Finished difference Result 578 states and 681 transitions. [2022-11-03 01:47:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 01:47:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-03 01:47:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:59,981 INFO L225 Difference]: With dead ends: 578 [2022-11-03 01:47:59,982 INFO L226 Difference]: Without dead ends: 569 [2022-11-03 01:47:59,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=330, Invalid=1832, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 01:47:59,982 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1375 mSDsluCounter, 6713 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:59,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 7045 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 01:47:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-03 01:48:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 174. [2022-11-03 01:48:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 1.1511627906976745) internal successors, (198), 173 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2022-11-03 01:48:00,130 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 88 [2022-11-03 01:48:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:00,130 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2022-11-03 01:48:00,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2022-11-03 01:48:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 01:48:00,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:00,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:00,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-03 01:48:00,131 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1503027030, now seen corresponding path program 1 times [2022-11-03 01:48:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:00,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937239138] [2022-11-03 01:48:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:01,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:01,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937239138] [2022-11-03 01:48:01,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937239138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:01,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:01,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-03 01:48:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117289659] [2022-11-03 01:48:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:01,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 01:48:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 01:48:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:48:01,473 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:08,918 INFO L93 Difference]: Finished difference Result 847 states and 1035 transitions. [2022-11-03 01:48:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-03 01:48:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-03 01:48:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:08,919 INFO L225 Difference]: With dead ends: 847 [2022-11-03 01:48:08,920 INFO L226 Difference]: Without dead ends: 834 [2022-11-03 01:48:08,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=521, Invalid=2671, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 01:48:08,920 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1715 mSDsluCounter, 9148 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 9572 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:08,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 9572 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 01:48:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-03 01:48:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 187. [2022-11-03 01:48:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 186 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 213 transitions. [2022-11-03 01:48:09,119 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 213 transitions. Word has length 89 [2022-11-03 01:48:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:09,119 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 213 transitions. [2022-11-03 01:48:09,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 213 transitions. [2022-11-03 01:48:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 01:48:09,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:09,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-03 01:48:09,120 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 345988239, now seen corresponding path program 1 times [2022-11-03 01:48:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265701778] [2022-11-03 01:48:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:09,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:09,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265701778] [2022-11-03 01:48:09,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265701778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:09,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:09,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:48:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121228372] [2022-11-03 01:48:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:09,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:48:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:48:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:48:09,623 INFO L87 Difference]: Start difference. First operand 187 states and 213 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:10,939 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2022-11-03 01:48:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:48:10,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-03 01:48:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:10,940 INFO L225 Difference]: With dead ends: 371 [2022-11-03 01:48:10,940 INFO L226 Difference]: Without dead ends: 355 [2022-11-03 01:48:10,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:48:10,941 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 740 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:10,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1580 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:48:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-03 01:48:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 139. [2022-11-03 01:48:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.144927536231884) internal successors, (158), 138 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2022-11-03 01:48:11,083 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 89 [2022-11-03 01:48:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:11,084 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2022-11-03 01:48:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2022-11-03 01:48:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 01:48:11,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:11,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:11,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-03 01:48:11,085 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:11,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:11,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1224566650, now seen corresponding path program 1 times [2022-11-03 01:48:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:11,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198111788] [2022-11-03 01:48:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:11,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198111788] [2022-11-03 01:48:11,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198111788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:11,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:11,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467979828] [2022-11-03 01:48:11,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:11,199 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:11,522 INFO L93 Difference]: Finished difference Result 227 states and 272 transitions. [2022-11-03 01:48:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-11-03 01:48:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:11,524 INFO L225 Difference]: With dead ends: 227 [2022-11-03 01:48:11,524 INFO L226 Difference]: Without dead ends: 183 [2022-11-03 01:48:11,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:11,525 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 64 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:11,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 297 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-03 01:48:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2022-11-03 01:48:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1818181818181819) internal successors, (208), 176 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 208 transitions. [2022-11-03 01:48:11,830 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 208 transitions. Word has length 107 [2022-11-03 01:48:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:11,830 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 208 transitions. [2022-11-03 01:48:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 208 transitions. [2022-11-03 01:48:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 01:48:11,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:11,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:11,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-03 01:48:11,832 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash 69520759, now seen corresponding path program 1 times [2022-11-03 01:48:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:11,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692352961] [2022-11-03 01:48:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:11,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:11,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:11,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692352961] [2022-11-03 01:48:11,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692352961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:11,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:11,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763716744] [2022-11-03 01:48:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:11,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:11,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:11,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:11,943 INFO L87 Difference]: Start difference. First operand 177 states and 208 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:12,479 INFO L93 Difference]: Finished difference Result 341 states and 422 transitions. [2022-11-03 01:48:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-11-03 01:48:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:12,480 INFO L225 Difference]: With dead ends: 341 [2022-11-03 01:48:12,480 INFO L226 Difference]: Without dead ends: 259 [2022-11-03 01:48:12,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:12,481 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 57 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:12,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 298 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-03 01:48:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2022-11-03 01:48:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.217741935483871) internal successors, (302), 248 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 302 transitions. [2022-11-03 01:48:12,936 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 302 transitions. Word has length 110 [2022-11-03 01:48:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:12,936 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 302 transitions. [2022-11-03 01:48:12,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 302 transitions. [2022-11-03 01:48:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 01:48:12,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:12,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:12,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-03 01:48:12,938 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1653500781, now seen corresponding path program 1 times [2022-11-03 01:48:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329742180] [2022-11-03 01:48:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:13,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329742180] [2022-11-03 01:48:13,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329742180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:13,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:13,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962926108] [2022-11-03 01:48:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:13,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:13,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:13,043 INFO L87 Difference]: Start difference. First operand 249 states and 302 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:13,931 INFO L93 Difference]: Finished difference Result 557 states and 704 transitions. [2022-11-03 01:48:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:13,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-03 01:48:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:13,932 INFO L225 Difference]: With dead ends: 557 [2022-11-03 01:48:13,933 INFO L226 Difference]: Without dead ends: 403 [2022-11-03 01:48:13,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:13,933 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 50 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:13,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 299 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-03 01:48:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 385. [2022-11-03 01:48:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.2447916666666667) internal successors, (478), 384 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 478 transitions. [2022-11-03 01:48:14,783 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 478 transitions. Word has length 113 [2022-11-03 01:48:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:14,783 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 478 transitions. [2022-11-03 01:48:14,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 478 transitions. [2022-11-03 01:48:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 01:48:14,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:14,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:14,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-03 01:48:14,784 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1760761309, now seen corresponding path program 1 times [2022-11-03 01:48:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:14,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981591746] [2022-11-03 01:48:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:14,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:14,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981591746] [2022-11-03 01:48:14,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981591746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:14,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:14,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975288310] [2022-11-03 01:48:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:14,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:14,890 INFO L87 Difference]: Start difference. First operand 385 states and 478 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:16,620 INFO L93 Difference]: Finished difference Result 965 states and 1232 transitions. [2022-11-03 01:48:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-03 01:48:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:16,621 INFO L225 Difference]: With dead ends: 965 [2022-11-03 01:48:16,622 INFO L226 Difference]: Without dead ends: 675 [2022-11-03 01:48:16,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:16,623 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 43 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:16,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 300 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-11-03 01:48:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 641. [2022-11-03 01:48:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.259375) internal successors, (806), 640 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 806 transitions. [2022-11-03 01:48:18,109 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 806 transitions. Word has length 116 [2022-11-03 01:48:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:18,109 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 806 transitions. [2022-11-03 01:48:18,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 806 transitions. [2022-11-03 01:48:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 01:48:18,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:18,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-03 01:48:18,110 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1069678598, now seen corresponding path program 1 times [2022-11-03 01:48:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:18,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924744061] [2022-11-03 01:48:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:18,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924744061] [2022-11-03 01:48:18,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924744061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:18,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:18,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823258074] [2022-11-03 01:48:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:18,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:18,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:18,195 INFO L87 Difference]: Start difference. First operand 641 states and 806 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:21,390 INFO L93 Difference]: Finished difference Result 1733 states and 2216 transitions. [2022-11-03 01:48:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:21,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-11-03 01:48:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:21,393 INFO L225 Difference]: With dead ends: 1733 [2022-11-03 01:48:21,393 INFO L226 Difference]: Without dead ends: 1187 [2022-11-03 01:48:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:21,394 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 33 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 301 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-11-03 01:48:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1121. [2022-11-03 01:48:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 1.2625) internal successors, (1414), 1120 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1414 transitions. [2022-11-03 01:48:24,410 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1414 transitions. Word has length 119 [2022-11-03 01:48:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:24,410 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1414 transitions. [2022-11-03 01:48:24,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1414 transitions. [2022-11-03 01:48:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 01:48:24,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:24,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:24,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-03 01:48:24,412 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 488041427, now seen corresponding path program 1 times [2022-11-03 01:48:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:24,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571200212] [2022-11-03 01:48:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:24,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:24,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571200212] [2022-11-03 01:48:24,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571200212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:24,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:24,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:48:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434018901] [2022-11-03 01:48:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:24,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:48:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:48:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:48:24,540 INFO L87 Difference]: Start difference. First operand 1121 states and 1414 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:34,070 INFO L93 Difference]: Finished difference Result 4420 states and 5611 transitions. [2022-11-03 01:48:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:48:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-03 01:48:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:34,076 INFO L225 Difference]: With dead ends: 4420 [2022-11-03 01:48:34,076 INFO L226 Difference]: Without dead ends: 3394 [2022-11-03 01:48:34,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:48:34,078 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 830 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:34,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1359 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:48:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2022-11-03 01:48:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 1567. [2022-11-03 01:48:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 1.2490421455938698) internal successors, (1956), 1566 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1956 transitions. [2022-11-03 01:48:38,416 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1956 transitions. Word has length 122 [2022-11-03 01:48:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:38,416 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 1956 transitions. [2022-11-03 01:48:38,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1956 transitions. [2022-11-03 01:48:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 01:48:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:38,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-03 01:48:38,417 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 603621034, now seen corresponding path program 1 times [2022-11-03 01:48:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473284914] [2022-11-03 01:48:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:38,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:38,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473284914] [2022-11-03 01:48:38,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473284914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:38,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:38,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88380319] [2022-11-03 01:48:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:38,506 INFO L87 Difference]: Start difference. First operand 1567 states and 1956 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:44,314 INFO L93 Difference]: Finished difference Result 3665 states and 4596 transitions. [2022-11-03 01:48:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:48:44,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-03 01:48:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:44,318 INFO L225 Difference]: With dead ends: 3665 [2022-11-03 01:48:44,318 INFO L226 Difference]: Without dead ends: 2193 [2022-11-03 01:48:44,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:44,319 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 78 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:44,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 235 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:48:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-11-03 01:48:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2191. [2022-11-03 01:48:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 1.24337899543379) internal successors, (2723), 2190 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2723 transitions. [2022-11-03 01:48:50,187 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2723 transitions. Word has length 124 [2022-11-03 01:48:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:50,188 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2723 transitions. [2022-11-03 01:48:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2723 transitions. [2022-11-03 01:48:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-03 01:48:50,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:50,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-03 01:48:50,189 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:48:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1582353173, now seen corresponding path program 1 times [2022-11-03 01:48:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867760268] [2022-11-03 01:48:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:50,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867760268] [2022-11-03 01:48:50,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867760268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:50,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:50,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:48:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114688340] [2022-11-03 01:48:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:48:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:48:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:48:50,418 INFO L87 Difference]: Start difference. First operand 2191 states and 2723 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:48:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:56,528 INFO L93 Difference]: Finished difference Result 4289 states and 5346 transitions. [2022-11-03 01:48:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:48:56,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-03 01:48:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:56,531 INFO L225 Difference]: With dead ends: 4289 [2022-11-03 01:48:56,531 INFO L226 Difference]: Without dead ends: 2193 [2022-11-03 01:48:56,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:48:56,534 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 455 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:56,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 416 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:48:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-11-03 01:49:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2191. [2022-11-03 01:49:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 1.2429223744292237) internal successors, (2722), 2190 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2722 transitions. [2022-11-03 01:49:02,392 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2722 transitions. Word has length 124 [2022-11-03 01:49:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:02,393 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2722 transitions. [2022-11-03 01:49:02,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2722 transitions. [2022-11-03 01:49:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 01:49:02,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:02,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:02,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-03 01:49:02,394 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:49:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -4611154, now seen corresponding path program 1 times [2022-11-03 01:49:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:02,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143229614] [2022-11-03 01:49:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:02,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:02,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143229614] [2022-11-03 01:49:02,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143229614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:02,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:02,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:49:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221359298] [2022-11-03 01:49:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:02,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:49:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:49:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:49:02,687 INFO L87 Difference]: Start difference. First operand 2191 states and 2722 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:12,061 INFO L93 Difference]: Finished difference Result 3018 states and 3728 transitions. [2022-11-03 01:49:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:49:12,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-11-03 01:49:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:12,069 INFO L225 Difference]: With dead ends: 3018 [2022-11-03 01:49:12,069 INFO L226 Difference]: Without dead ends: 3016 [2022-11-03 01:49:12,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:49:12,070 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 329 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:12,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 963 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:49:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2022-11-03 01:49:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2191. [2022-11-03 01:49:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 1.2283105022831051) internal successors, (2690), 2190 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2690 transitions. [2022-11-03 01:49:18,236 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2690 transitions. Word has length 125 [2022-11-03 01:49:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:18,236 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2690 transitions. [2022-11-03 01:49:18,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2690 transitions. [2022-11-03 01:49:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 01:49:18,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:18,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-03 01:49:18,238 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:49:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1628811057, now seen corresponding path program 1 times [2022-11-03 01:49:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177599602] [2022-11-03 01:49:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:49:18,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:18,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177599602] [2022-11-03 01:49:18,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177599602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:18,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:18,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:49:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609474388] [2022-11-03 01:49:18,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:49:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:49:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:49:18,532 INFO L87 Difference]: Start difference. First operand 2191 states and 2690 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:28,692 INFO L93 Difference]: Finished difference Result 5490 states and 6760 transitions. [2022-11-03 01:49:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:49:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 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 144 [2022-11-03 01:49:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:28,699 INFO L225 Difference]: With dead ends: 5490 [2022-11-03 01:49:28,699 INFO L226 Difference]: Without dead ends: 3387 [2022-11-03 01:49:28,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-03 01:49:28,702 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 524 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:28,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 425 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:49:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2022-11-03 01:49:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2191. [2022-11-03 01:49:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 1.227853881278539) internal successors, (2689), 2190 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2689 transitions. [2022-11-03 01:49:35,074 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2689 transitions. Word has length 144 [2022-11-03 01:49:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:35,075 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2689 transitions. [2022-11-03 01:49:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2689 transitions. [2022-11-03 01:49:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 01:49:35,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:35,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-03 01:49:35,077 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:49:35,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1952900396, now seen corresponding path program 1 times [2022-11-03 01:49:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:35,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582701956] [2022-11-03 01:49:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:49:37,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:37,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582701956] [2022-11-03 01:49:37,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582701956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:37,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:37,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 01:49:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845423216] [2022-11-03 01:49:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:37,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 01:49:37,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 01:49:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:49:37,247 INFO L87 Difference]: Start difference. First operand 2191 states and 2689 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:49:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:59,067 INFO L93 Difference]: Finished difference Result 8421 states and 10382 transitions. [2022-11-03 01:49:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 01:49:59,068 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 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 146 [2022-11-03 01:49:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:59,079 INFO L225 Difference]: With dead ends: 8421 [2022-11-03 01:49:59,080 INFO L226 Difference]: Without dead ends: 6317 [2022-11-03 01:49:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 01:49:59,084 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1294 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 6758 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 01:49:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-11-03 01:50:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 2215. [2022-11-03 01:50:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2214 states have (on average 1.2267389340560073) internal successors, (2716), 2214 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2716 transitions. [2022-11-03 01:50:05,701 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2716 transitions. Word has length 146 [2022-11-03 01:50:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:05,701 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 2716 transitions. [2022-11-03 01:50:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:50:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2716 transitions. [2022-11-03 01:50:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-03 01:50:05,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:05,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:05,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-03 01:50:05,702 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-11-03 01:50:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1242899126, now seen corresponding path program 1 times [2022-11-03 01:50:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228909988] [2022-11-03 01:50:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:05,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:15,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228909988] [2022-11-03 01:50:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228909988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890968533] [2022-11-03 01:50:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:15,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:15,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:15,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2df283fa-910c-44de-9b96-9aa0768407b0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:50:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:15,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-03 01:50:15,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:44,453 INFO L328 TraceCheckSpWp]: Computing backward predicates...