./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61079a62c86de0622c6f0d8d69ab5d3bd5c88209c75f4f3a60aa83a2a40500fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:48:38,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:48:38,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:48:38,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:48:38,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:48:38,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:48:38,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:48:38,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:48:38,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:48:38,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:48:38,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:48:38,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:48:38,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:48:38,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:48:38,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:48:38,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:48:38,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:48:38,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:48:38,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:48:38,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:48:38,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:48:38,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:48:38,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:48:38,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:48:38,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:48:38,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:48:38,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:48:38,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:48:38,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:48:38,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:48:38,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:48:38,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:48:38,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:48:38,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:48:38,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:48:38,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:48:38,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:48:38,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:48:38,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:48:38,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:48:38,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:48:38,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:48:38,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:48:38,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:48:38,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:48:38,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:48:38,715 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:48:38,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:48:38,715 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:48:38,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:48:38,716 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:48:38,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:48:38,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:48:38,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:48:38,716 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:48:38,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:48:38,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:48:38,717 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:48:38,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:48:38,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:48:38,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:48:38,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:48:38,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:48:38,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:48:38,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:48:38,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:48:38,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:48:38,720 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:48:38,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:48:38,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:48:38,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:48:38,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:48:38,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:48:38,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:38,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:48:38,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:48:38,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:48:38,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:48:38,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:48:38,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:48:38,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:48:38,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:48:38,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61079a62c86de0622c6f0d8d69ab5d3bd5c88209c75f4f3a60aa83a2a40500fd [2021-11-12 23:48:39,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:48:39,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:48:39,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:48:39,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:48:39,034 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:48:39,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 23:48:39,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/data/59e1d53d2/fa91a4db8bd44596b13460b413ac58f1/FLAGfce441816 [2021-11-12 23:48:40,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:48:40,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 23:48:40,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/data/59e1d53d2/fa91a4db8bd44596b13460b413ac58f1/FLAGfce441816 [2021-11-12 23:48:40,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/data/59e1d53d2/fa91a4db8bd44596b13460b413ac58f1 [2021-11-12 23:48:40,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:48:40,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:48:40,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:40,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:48:40,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:48:40,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:40" (1/1) ... [2021-11-12 23:48:40,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41748d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:40, skipping insertion in model container [2021-11-12 23:48:40,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:48:40" (1/1) ... [2021-11-12 23:48:40,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:48:40,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:48:41,930 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2021-11-12 23:48:42,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2021-11-12 23:48:42,261 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2021-11-12 23:48:42,363 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2021-11-12 23:48:42,391 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2021-11-12 23:48:42,424 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2021-11-12 23:48:42,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2021-11-12 23:48:42,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2021-11-12 23:48:42,655 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2021-11-12 23:48:42,754 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2021-11-12 23:48:43,014 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2021-11-12 23:48:43,072 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2021-11-12 23:48:43,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2021-11-12 23:48:43,199 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2021-11-12 23:48:43,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2021-11-12 23:48:43,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2021-11-12 23:48:43,313 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2021-11-12 23:48:43,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2021-11-12 23:48:43,705 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2021-11-12 23:48:43,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:44,000 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:48:44,243 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2021-11-12 23:48:44,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2021-11-12 23:48:44,455 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2021-11-12 23:48:44,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2021-11-12 23:48:44,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2021-11-12 23:48:44,566 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2021-11-12 23:48:44,607 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2021-11-12 23:48:44,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2021-11-12 23:48:44,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2021-11-12 23:48:44,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2021-11-12 23:48:45,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2021-11-12 23:48:45,074 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2021-11-12 23:48:45,121 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2021-11-12 23:48:45,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2021-11-12 23:48:45,149 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2021-11-12 23:48:45,186 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2021-11-12 23:48:45,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2021-11-12 23:48:45,297 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2021-11-12 23:48:45,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2021-11-12 23:48:45,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:48:45,786 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:48:45,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45 WrapperNode [2021-11-12 23:48:45,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:48:45,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:45,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:48:45,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:48:45,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:45,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:46,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:48:46,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:48:46,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:48:46,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:48:46,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:46,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:46,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:46,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:46,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:47,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:47,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:47,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:48:47,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:48:47,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:48:47,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:48:47,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (1/1) ... [2021-11-12 23:48:47,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:48:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:48:47,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:48:47,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272887b5-c38d-40a2-8beb-a8a3545d0151/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:48:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:48:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:48:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:48:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:49:01,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:49:01,572 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:49:01,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:49:01 BoogieIcfgContainer [2021-11-12 23:49:01,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:49:01,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:49:01,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:49:01,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:49:01,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:48:40" (1/3) ... [2021-11-12 23:49:01,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234cea94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:49:01, skipping insertion in model container [2021-11-12 23:49:01,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:48:45" (2/3) ... [2021-11-12 23:49:01,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234cea94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:49:01, skipping insertion in model container [2021-11-12 23:49:01,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:49:01" (3/3) ... [2021-11-12 23:49:01,603 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-12 23:49:01,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:49:01,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-12 23:49:01,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:49:01,687 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:49:01,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-12 23:49:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 5974 states, 5954 states have (on average 1.8098757138058448) internal successors, (10776), 5973 states have internal predecessors, (10776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:49:01,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:01,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:01,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1586848728, now seen corresponding path program 1 times [2021-11-12 23:49:01,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:01,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633506950] [2021-11-12 23:49:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:01,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:02,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:02,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633506950] [2021-11-12 23:49:02,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633506950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:02,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:02,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:49:02,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674537197] [2021-11-12 23:49:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:02,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:02,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:02,430 INFO L87 Difference]: Start difference. First operand has 5974 states, 5954 states have (on average 1.8098757138058448) internal successors, (10776), 5973 states have internal predecessors, (10776), 0 states have call successors, (0), 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 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) [2021-11-12 23:49:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:07,992 INFO L93 Difference]: Finished difference Result 8746 states and 15572 transitions. [2021-11-12 23:49:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:07,995 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 [2021-11-12 23:49:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:08,056 INFO L225 Difference]: With dead ends: 8746 [2021-11-12 23:49:08,057 INFO L226 Difference]: Without dead ends: 5503 [2021-11-12 23:49:08,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:49:08,079 INFO L933 BasicCegarLoop]: 4488 mSDtfsCounter, 27705 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 4607 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4001.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27705 SdHoareTripleChecker+Valid, 5291 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.41ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4936.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:08,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27705 Valid, 5291 Invalid, 4710 Unknown, 0 Unchecked, 90.41ms Time], IncrementalHoareTripleChecker [103 Valid, 4607 Invalid, 0 Unknown, 0 Unchecked, 4936.24ms Time] [2021-11-12 23:49:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2021-11-12 23:49:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5473. [2021-11-12 23:49:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5454 states have (on average 1.3094976164283094) internal successors, (7142), 5472 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7142 transitions. [2021-11-12 23:49:08,416 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7142 transitions. Word has length 76 [2021-11-12 23:49:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:08,419 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 7142 transitions. [2021-11-12 23:49:08,420 INFO L471 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) [2021-11-12 23:49:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7142 transitions. [2021-11-12 23:49:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:49:08,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:08,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:08,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:49:08,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1151184511, now seen corresponding path program 1 times [2021-11-12 23:49:08,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:08,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309909989] [2021-11-12 23:49:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:08,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:08,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:08,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309909989] [2021-11-12 23:49:08,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309909989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:08,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:08,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:49:08,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558161766] [2021-11-12 23:49:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:08,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:49:08,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:49:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:49:08,876 INFO L87 Difference]: Start difference. First operand 5473 states and 7142 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:17,719 INFO L93 Difference]: Finished difference Result 5903 states and 7698 transitions. [2021-11-12 23:49:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:49:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-12 23:49:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:17,755 INFO L225 Difference]: With dead ends: 5903 [2021-11-12 23:49:17,755 INFO L226 Difference]: Without dead ends: 5898 [2021-11-12 23:49:17,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:49:17,763 INFO L933 BasicCegarLoop]: 2762 mSDtfsCounter, 19456 mSDsluCounter, 9198 mSDsCounter, 0 mSdLazyCounter, 14778 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6736.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19456 SdHoareTripleChecker+Valid, 11951 SdHoareTripleChecker+Invalid, 15129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.82ms SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 14778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8224.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:17,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19456 Valid, 11951 Invalid, 15129 Unknown, 0 Unchecked, 94.82ms Time], IncrementalHoareTripleChecker [351 Valid, 14778 Invalid, 0 Unknown, 0 Unchecked, 8224.98ms Time] [2021-11-12 23:49:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2021-11-12 23:49:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5473. [2021-11-12 23:49:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5454 states have (on average 1.3093142647598093) internal successors, (7141), 5472 states have internal predecessors, (7141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7141 transitions. [2021-11-12 23:49:17,996 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7141 transitions. Word has length 77 [2021-11-12 23:49:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:17,998 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 7141 transitions. [2021-11-12 23:49:17,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7141 transitions. [2021-11-12 23:49:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:49:18,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:18,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:18,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:49:18,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1331787270, now seen corresponding path program 1 times [2021-11-12 23:49:18,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:18,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322818236] [2021-11-12 23:49:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:18,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:18,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:18,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322818236] [2021-11-12 23:49:18,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322818236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:18,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:18,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:49:18,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474057195] [2021-11-12 23:49:18,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:18,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:18,377 INFO L87 Difference]: Start difference. First operand 5473 states and 7141 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:21,700 INFO L93 Difference]: Finished difference Result 8988 states and 11707 transitions. [2021-11-12 23:49:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-12 23:49:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:21,734 INFO L225 Difference]: With dead ends: 8988 [2021-11-12 23:49:21,734 INFO L226 Difference]: Without dead ends: 5638 [2021-11-12 23:49:21,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:49:21,742 INFO L933 BasicCegarLoop]: 2163 mSDtfsCounter, 16497 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2393.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16497 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.77ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2999.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16497 Valid, 2761 Invalid, 3433 Unknown, 0 Unchecked, 29.77ms Time], IncrementalHoareTripleChecker [92 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 2999.44ms Time] [2021-11-12 23:49:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-11-12 23:49:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5609. [2021-11-12 23:49:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 5590 states have (on average 1.3178890876565295) internal successors, (7367), 5608 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 7367 transitions. [2021-11-12 23:49:22,018 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 7367 transitions. Word has length 77 [2021-11-12 23:49:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:22,018 INFO L470 AbstractCegarLoop]: Abstraction has 5609 states and 7367 transitions. [2021-11-12 23:49:22,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 7367 transitions. [2021-11-12 23:49:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:49:22,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:22,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:22,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:49:22,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1639149933, now seen corresponding path program 1 times [2021-11-12 23:49:22,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:22,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902809635] [2021-11-12 23:49:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:22,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:22,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:22,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902809635] [2021-11-12 23:49:22,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902809635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:22,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:22,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:49:22,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630460919] [2021-11-12 23:49:22,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:22,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:22,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:22,169 INFO L87 Difference]: Start difference. First operand 5609 states and 7367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:25,209 INFO L93 Difference]: Finished difference Result 10736 states and 14137 transitions. [2021-11-12 23:49:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 23:49:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:25,245 INFO L225 Difference]: With dead ends: 10736 [2021-11-12 23:49:25,245 INFO L226 Difference]: Without dead ends: 7330 [2021-11-12 23:49:25,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:49:25,251 INFO L933 BasicCegarLoop]: 2037 mSDtfsCounter, 15703 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2218.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15703 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.13ms SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2734.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:25,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15703 Valid, 2612 Invalid, 3417 Unknown, 0 Unchecked, 25.13ms Time], IncrementalHoareTripleChecker [233 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 2734.34ms Time] [2021-11-12 23:49:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7330 states. [2021-11-12 23:49:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7330 to 7304. [2021-11-12 23:49:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 7285 states have (on average 1.3013040494166095) internal successors, (9480), 7303 states have internal predecessors, (9480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9480 transitions. [2021-11-12 23:49:25,592 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9480 transitions. Word has length 78 [2021-11-12 23:49:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:25,592 INFO L470 AbstractCegarLoop]: Abstraction has 7304 states and 9480 transitions. [2021-11-12 23:49:25,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9480 transitions. [2021-11-12 23:49:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:49:25,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:25,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:25,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:49:25,611 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 865086873, now seen corresponding path program 1 times [2021-11-12 23:49:25,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:25,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380599492] [2021-11-12 23:49:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:25,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:26,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:26,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380599492] [2021-11-12 23:49:26,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380599492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:26,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:26,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 23:49:26,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796923494] [2021-11-12 23:49:26,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:26,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:49:26,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:49:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:49:26,179 INFO L87 Difference]: Start difference. First operand 7304 states and 9480 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:31,911 INFO L93 Difference]: Finished difference Result 13416 states and 17992 transitions. [2021-11-12 23:49:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-12 23:49:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 23:49:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:31,962 INFO L225 Difference]: With dead ends: 13416 [2021-11-12 23:49:31,962 INFO L226 Difference]: Without dead ends: 13408 [2021-11-12 23:49:31,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 23:49:31,968 INFO L933 BasicCegarLoop]: 4798 mSDtfsCounter, 27619 mSDsluCounter, 30171 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3006.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27619 SdHoareTripleChecker+Valid, 34465 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.07ms SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3713.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:31,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27619 Valid, 34465 Invalid, 5528 Unknown, 0 Unchecked, 86.07ms Time], IncrementalHoareTripleChecker [702 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 3713.21ms Time] [2021-11-12 23:49:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-11-12 23:49:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 7296. [2021-11-12 23:49:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7296 states, 7278 states have (on average 1.3014564440780434) internal successors, (9472), 7295 states have internal predecessors, (9472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 9472 transitions. [2021-11-12 23:49:32,381 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 9472 transitions. Word has length 78 [2021-11-12 23:49:32,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:32,382 INFO L470 AbstractCegarLoop]: Abstraction has 7296 states and 9472 transitions. [2021-11-12 23:49:32,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 9472 transitions. [2021-11-12 23:49:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:49:32,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:32,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:32,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:49:32,396 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1161754745, now seen corresponding path program 1 times [2021-11-12 23:49:32,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:32,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779892589] [2021-11-12 23:49:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:32,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:32,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:32,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779892589] [2021-11-12 23:49:32,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779892589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:32,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:32,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-12 23:49:32,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763409895] [2021-11-12 23:49:32,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:32,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:49:32,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:32,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:49:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:49:32,606 INFO L87 Difference]: Start difference. First operand 7296 states and 9472 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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) [2021-11-12 23:49:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:41,207 INFO L93 Difference]: Finished difference Result 11146 states and 14782 transitions. [2021-11-12 23:49:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 23:49:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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 [2021-11-12 23:49:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:41,230 INFO L225 Difference]: With dead ends: 11146 [2021-11-12 23:49:41,230 INFO L226 Difference]: Without dead ends: 10483 [2021-11-12 23:49:41,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:49:41,235 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 16683 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 14574 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6039.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16683 SdHoareTripleChecker+Valid, 11380 SdHoareTripleChecker+Invalid, 14711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.61ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 14574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7341.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:41,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16683 Valid, 11380 Invalid, 14711 Unknown, 0 Unchecked, 59.61ms Time], IncrementalHoareTripleChecker [137 Valid, 14574 Invalid, 0 Unknown, 0 Unchecked, 7341.07ms Time] [2021-11-12 23:49:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2021-11-12 23:49:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 7303. [2021-11-12 23:49:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7285 states have (on average 1.3011667810569663) internal successors, (9479), 7302 states have internal predecessors, (9479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9479 transitions. [2021-11-12 23:49:41,664 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9479 transitions. Word has length 79 [2021-11-12 23:49:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 9479 transitions. [2021-11-12 23:49:41,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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) [2021-11-12 23:49:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9479 transitions. [2021-11-12 23:49:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:49:41,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:41,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:41,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:49:41,677 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1561427822, now seen corresponding path program 1 times [2021-11-12 23:49:41,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:41,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788744468] [2021-11-12 23:49:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:41,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:41,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:41,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788744468] [2021-11-12 23:49:41,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788744468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:41,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:41,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:49:41,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112497403] [2021-11-12 23:49:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:41,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:41,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:41,770 INFO L87 Difference]: Start difference. First operand 7303 states and 9479 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2021-11-12 23:49:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:44,622 INFO L93 Difference]: Finished difference Result 13926 states and 18108 transitions. [2021-11-12 23:49:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 [2021-11-12 23:49:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:44,646 INFO L225 Difference]: With dead ends: 13926 [2021-11-12 23:49:44,647 INFO L226 Difference]: Without dead ends: 9454 [2021-11-12 23:49:44,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:49:44,657 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 14298 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1809.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14298 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.43ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2281.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:44,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14298 Valid, 2440 Invalid, 2970 Unknown, 0 Unchecked, 20.43ms Time], IncrementalHoareTripleChecker [98 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2281.67ms Time] [2021-11-12 23:49:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2021-11-12 23:49:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 9434. [2021-11-12 23:49:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9434 states, 9416 states have (on average 1.2998088360237894) internal successors, (12239), 9433 states have internal predecessors, (12239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9434 states to 9434 states and 12239 transitions. [2021-11-12 23:49:45,420 INFO L78 Accepts]: Start accepts. Automaton has 9434 states and 12239 transitions. Word has length 79 [2021-11-12 23:49:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 9434 states and 12239 transitions. [2021-11-12 23:49:45,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2021-11-12 23:49:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9434 states and 12239 transitions. [2021-11-12 23:49:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:49:45,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:45,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:45,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:49:45,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:45,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash -615366141, now seen corresponding path program 1 times [2021-11-12 23:49:45,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:45,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686613838] [2021-11-12 23:49:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:45,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:45,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:45,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686613838] [2021-11-12 23:49:45,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686613838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:45,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:45,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:49:45,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337615411] [2021-11-12 23:49:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:45,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:49:45,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:49:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:49:45,540 INFO L87 Difference]: Start difference. First operand 9434 states and 12239 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2021-11-12 23:49:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:48,908 INFO L93 Difference]: Finished difference Result 20848 states and 27364 transitions. [2021-11-12 23:49:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:49:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 [2021-11-12 23:49:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:48,941 INFO L225 Difference]: With dead ends: 20848 [2021-11-12 23:49:48,941 INFO L226 Difference]: Without dead ends: 13703 [2021-11-12 23:49:48,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:49:48,955 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 14461 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1930.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14461 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.57ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2406.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:48,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14461 Valid, 2612 Invalid, 2911 Unknown, 0 Unchecked, 23.57ms Time], IncrementalHoareTripleChecker [101 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 2406.13ms Time] [2021-11-12 23:49:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13703 states. [2021-11-12 23:49:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13703 to 13679. [2021-11-12 23:49:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13679 states, 13661 states have (on average 1.2976356050069542) internal successors, (17727), 13678 states have internal predecessors, (17727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13679 states to 13679 states and 17727 transitions. [2021-11-12 23:49:49,854 INFO L78 Accepts]: Start accepts. Automaton has 13679 states and 17727 transitions. Word has length 79 [2021-11-12 23:49:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:49,854 INFO L470 AbstractCegarLoop]: Abstraction has 13679 states and 17727 transitions. [2021-11-12 23:49:49,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2021-11-12 23:49:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13679 states and 17727 transitions. [2021-11-12 23:49:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:49:49,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:49,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:49:49,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1945118073, now seen corresponding path program 1 times [2021-11-12 23:49:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:49,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433235414] [2021-11-12 23:49:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:49,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:49,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433235414] [2021-11-12 23:49:49,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433235414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:49,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:49,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:49:49,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697763470] [2021-11-12 23:49:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:49,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:49:49,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:49:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:49:49,982 INFO L87 Difference]: Start difference. First operand 13679 states and 17727 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:51,764 INFO L93 Difference]: Finished difference Result 26894 states and 35051 transitions. [2021-11-12 23:49:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-12 23:49:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:51,793 INFO L225 Difference]: With dead ends: 26894 [2021-11-12 23:49:51,793 INFO L226 Difference]: Without dead ends: 16566 [2021-11-12 23:49:51,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:49:51,811 INFO L933 BasicCegarLoop]: 3584 mSDtfsCounter, 3646 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3646 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:51,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3646 Valid, 4526 Invalid, 500 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [25 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 417.62ms Time] [2021-11-12 23:49:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2021-11-12 23:49:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 16539. [2021-11-12 23:49:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16539 states, 16521 states have (on average 1.2895103201985352) internal successors, (21304), 16538 states have internal predecessors, (21304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16539 states to 16539 states and 21304 transitions. [2021-11-12 23:49:52,961 INFO L78 Accepts]: Start accepts. Automaton has 16539 states and 21304 transitions. Word has length 80 [2021-11-12 23:49:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:52,962 INFO L470 AbstractCegarLoop]: Abstraction has 16539 states and 21304 transitions. [2021-11-12 23:49:52,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16539 states and 21304 transitions. [2021-11-12 23:49:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:49:52,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:52,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:52,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:49:52,980 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1507795412, now seen corresponding path program 1 times [2021-11-12 23:49:52,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:52,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383422138] [2021-11-12 23:49:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:52,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:49:53,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:49:53,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383422138] [2021-11-12 23:49:53,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383422138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:53,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:49:53,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 23:49:53,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669472487] [2021-11-12 23:49:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:53,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:49:53,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:49:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:49:53,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:49:53,322 INFO L87 Difference]: Start difference. First operand 16539 states and 21304 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:58,351 INFO L93 Difference]: Finished difference Result 24893 states and 32981 transitions. [2021-11-12 23:49:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:49:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-12 23:49:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:58,385 INFO L225 Difference]: With dead ends: 24893 [2021-11-12 23:49:58,386 INFO L226 Difference]: Without dead ends: 24889 [2021-11-12 23:49:58,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:49:58,391 INFO L933 BasicCegarLoop]: 3690 mSDtfsCounter, 18395 mSDsluCounter, 13691 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1714.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18395 SdHoareTripleChecker+Valid, 17183 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.40ms SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2061.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:58,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18395 Valid, 17183 Invalid, 3524 Unknown, 0 Unchecked, 37.40ms Time], IncrementalHoareTripleChecker [445 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 2061.43ms Time] [2021-11-12 23:49:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24889 states. [2021-11-12 23:49:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24889 to 16535. [2021-11-12 23:49:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16535 states, 16518 states have (on average 1.289502361060661) internal successors, (21300), 16534 states have internal predecessors, (21300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 21300 transitions. [2021-11-12 23:49:59,881 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 21300 transitions. Word has length 80 [2021-11-12 23:49:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:59,881 INFO L470 AbstractCegarLoop]: Abstraction has 16535 states and 21300 transitions. [2021-11-12 23:49:59,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:49:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 21300 transitions. [2021-11-12 23:49:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:49:59,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:59,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:59,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:49:59,901 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:49:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 465400969, now seen corresponding path program 1 times [2021-11-12 23:49:59,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:49:59,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086441763] [2021-11-12 23:49:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:59,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:49:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:00,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:00,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086441763] [2021-11-12 23:50:00,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086441763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:00,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:00,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:50:00,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288047349] [2021-11-12 23:50:00,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:00,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:50:00,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:00,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:50:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:00,055 INFO L87 Difference]: Start difference. First operand 16535 states and 21300 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) [2021-11-12 23:50:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:06,609 INFO L93 Difference]: Finished difference Result 20776 states and 26833 transitions. [2021-11-12 23:50:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:50:06,610 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 [2021-11-12 23:50:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:06,636 INFO L225 Difference]: With dead ends: 20776 [2021-11-12 23:50:06,636 INFO L226 Difference]: Without dead ends: 20768 [2021-11-12 23:50:06,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:06,642 INFO L933 BasicCegarLoop]: 1836 mSDtfsCounter, 8147 mSDsluCounter, 6880 mSDsCounter, 0 mSdLazyCounter, 9827 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3610.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8147 SdHoareTripleChecker+Valid, 8710 SdHoareTripleChecker+Invalid, 10064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.53ms SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 9827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4518.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:06,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8147 Valid, 8710 Invalid, 10064 Unknown, 0 Unchecked, 37.53ms Time], IncrementalHoareTripleChecker [237 Valid, 9827 Invalid, 0 Unknown, 0 Unchecked, 4518.47ms Time] [2021-11-12 23:50:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20768 states. [2021-11-12 23:50:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20768 to 16535. [2021-11-12 23:50:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16535 states, 16518 states have (on average 1.28944182104371) internal successors, (21299), 16534 states have internal predecessors, (21299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16535 states to 16535 states and 21299 transitions. [2021-11-12 23:50:08,167 INFO L78 Accepts]: Start accepts. Automaton has 16535 states and 21299 transitions. Word has length 80 [2021-11-12 23:50:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:08,167 INFO L470 AbstractCegarLoop]: Abstraction has 16535 states and 21299 transitions. [2021-11-12 23:50:08,167 INFO L471 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) [2021-11-12 23:50:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16535 states and 21299 transitions. [2021-11-12 23:50:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:50:08,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:08,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:08,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 23:50:08,177 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -195949566, now seen corresponding path program 1 times [2021-11-12 23:50:08,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:08,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011455336] [2021-11-12 23:50:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:08,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:08,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:08,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011455336] [2021-11-12 23:50:08,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011455336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:08,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:08,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-12 23:50:08,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701435080] [2021-11-12 23:50:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:08,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:50:08,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:50:08,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:50:08,385 INFO L87 Difference]: Start difference. First operand 16535 states and 21299 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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) [2021-11-12 23:50:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:16,117 INFO L93 Difference]: Finished difference Result 21254 states and 27994 transitions. [2021-11-12 23:50:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:50:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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 [2021-11-12 23:50:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:16,138 INFO L225 Difference]: With dead ends: 21254 [2021-11-12 23:50:16,138 INFO L226 Difference]: Without dead ends: 17991 [2021-11-12 23:50:16,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:50:16,148 INFO L933 BasicCegarLoop]: 1795 mSDtfsCounter, 13629 mSDsluCounter, 7551 mSDsCounter, 0 mSdLazyCounter, 11344 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4608.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13629 SdHoareTripleChecker+Valid, 9336 SdHoareTripleChecker+Invalid, 11480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.77ms SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 11344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5585.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:16,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13629 Valid, 9336 Invalid, 11480 Unknown, 0 Unchecked, 45.77ms Time], IncrementalHoareTripleChecker [136 Valid, 11344 Invalid, 0 Unknown, 0 Unchecked, 5585.89ms Time] [2021-11-12 23:50:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-11-12 23:50:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 16288. [2021-11-12 23:50:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16288 states, 16271 states have (on average 1.290148116280499) internal successors, (20992), 16287 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16288 states to 16288 states and 20992 transitions. [2021-11-12 23:50:17,584 INFO L78 Accepts]: Start accepts. Automaton has 16288 states and 20992 transitions. Word has length 81 [2021-11-12 23:50:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:17,585 INFO L470 AbstractCegarLoop]: Abstraction has 16288 states and 20992 transitions. [2021-11-12 23:50:17,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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) [2021-11-12 23:50:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16288 states and 20992 transitions. [2021-11-12 23:50:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:50:17,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:17,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:17,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 23:50:17,595 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 544903916, now seen corresponding path program 1 times [2021-11-12 23:50:17,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:17,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352296083] [2021-11-12 23:50:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:17,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:17,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352296083] [2021-11-12 23:50:17,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352296083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:17,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:17,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 23:50:17,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456584908] [2021-11-12 23:50:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:17,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:50:17,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:50:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:50:17,940 INFO L87 Difference]: Start difference. First operand 16288 states and 20992 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 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) [2021-11-12 23:50:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:24,036 INFO L93 Difference]: Finished difference Result 29902 states and 39974 transitions. [2021-11-12 23:50:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:50:24,037 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 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 [2021-11-12 23:50:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:24,070 INFO L225 Difference]: With dead ends: 29902 [2021-11-12 23:50:24,070 INFO L226 Difference]: Without dead ends: 27835 [2021-11-12 23:50:24,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:50:24,076 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 21004 mSDsluCounter, 18615 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1595.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21004 SdHoareTripleChecker+Valid, 22339 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.93ms SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1915.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:24,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21004 Valid, 22339 Invalid, 3136 Unknown, 0 Unchecked, 47.93ms Time], IncrementalHoareTripleChecker [446 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 1915.15ms Time] [2021-11-12 23:50:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27835 states. [2021-11-12 23:50:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27835 to 16256. [2021-11-12 23:50:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16256 states, 16239 states have (on average 1.29028881088737) internal successors, (20953), 16255 states have internal predecessors, (20953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 20953 transitions. [2021-11-12 23:50:25,812 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 20953 transitions. Word has length 81 [2021-11-12 23:50:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:25,812 INFO L470 AbstractCegarLoop]: Abstraction has 16256 states and 20953 transitions. [2021-11-12 23:50:25,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 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) [2021-11-12 23:50:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 20953 transitions. [2021-11-12 23:50:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-12 23:50:25,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:25,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:25,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 23:50:25,871 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash -15895603, now seen corresponding path program 1 times [2021-11-12 23:50:25,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:25,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950229717] [2021-11-12 23:50:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:25,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:26,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:26,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950229717] [2021-11-12 23:50:26,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950229717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:26,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:26,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-12 23:50:26,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881249713] [2021-11-12 23:50:26,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:26,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:50:26,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:50:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:50:26,053 INFO L87 Difference]: Start difference. First operand 16256 states and 20953 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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) [2021-11-12 23:50:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:35,145 INFO L93 Difference]: Finished difference Result 30387 states and 40423 transitions. [2021-11-12 23:50:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:50:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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 [2021-11-12 23:50:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:35,179 INFO L225 Difference]: With dead ends: 30387 [2021-11-12 23:50:35,179 INFO L226 Difference]: Without dead ends: 27328 [2021-11-12 23:50:35,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:50:35,186 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 12246 mSDsluCounter, 7193 mSDsCounter, 0 mSdLazyCounter, 10046 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3766.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12246 SdHoareTripleChecker+Valid, 9196 SdHoareTripleChecker+Invalid, 10367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.40ms SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 10046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4644.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:35,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12246 Valid, 9196 Invalid, 10367 Unknown, 0 Unchecked, 42.40ms Time], IncrementalHoareTripleChecker [321 Valid, 10046 Invalid, 0 Unknown, 0 Unchecked, 4644.36ms Time] [2021-11-12 23:50:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27328 states. [2021-11-12 23:50:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27328 to 16211. [2021-11-12 23:50:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2902309497344695) internal successors, (20894), 16210 states have internal predecessors, (20894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20894 transitions. [2021-11-12 23:50:37,171 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20894 transitions. Word has length 81 [2021-11-12 23:50:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:37,171 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20894 transitions. [2021-11-12 23:50:37,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 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) [2021-11-12 23:50:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20894 transitions. [2021-11-12 23:50:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:50:37,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:37,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:37,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 23:50:37,181 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:37,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1253372965, now seen corresponding path program 1 times [2021-11-12 23:50:37,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:37,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638328858] [2021-11-12 23:50:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:37,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:37,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:37,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638328858] [2021-11-12 23:50:37,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638328858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:37,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:37,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:50:37,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606561832] [2021-11-12 23:50:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:37,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:50:37,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:50:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:37,330 INFO L87 Difference]: Start difference. First operand 16211 states and 20894 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) [2021-11-12 23:50:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:45,328 INFO L93 Difference]: Finished difference Result 22753 states and 29894 transitions. [2021-11-12 23:50:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:50:45,329 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 [2021-11-12 23:50:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:45,353 INFO L225 Difference]: With dead ends: 22753 [2021-11-12 23:50:45,353 INFO L226 Difference]: Without dead ends: 21754 [2021-11-12 23:50:45,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:50:45,357 INFO L933 BasicCegarLoop]: 1877 mSDtfsCounter, 11821 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 9701 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3682.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11821 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 9960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.73ms SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 9701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4523.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:45,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11821 Valid, 8793 Invalid, 9960 Unknown, 0 Unchecked, 41.73ms Time], IncrementalHoareTripleChecker [259 Valid, 9701 Invalid, 0 Unknown, 0 Unchecked, 4523.58ms Time] [2021-11-12 23:50:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21754 states. [2021-11-12 23:50:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21754 to 16211. [2021-11-12 23:50:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2901691984685686) internal successors, (20893), 16210 states have internal predecessors, (20893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20893 transitions. [2021-11-12 23:50:47,363 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20893 transitions. Word has length 82 [2021-11-12 23:50:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20893 transitions. [2021-11-12 23:50:47,364 INFO L471 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) [2021-11-12 23:50:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20893 transitions. [2021-11-12 23:50:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:50:47,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:47,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:47,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 23:50:47,377 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash 152682710, now seen corresponding path program 1 times [2021-11-12 23:50:47,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:47,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168282434] [2021-11-12 23:50:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:47,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:47,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:47,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168282434] [2021-11-12 23:50:47,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168282434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:47,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:50:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177945653] [2021-11-12 23:50:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:47,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:50:47,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:50:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:47,509 INFO L87 Difference]: Start difference. First operand 16211 states and 20893 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) [2021-11-12 23:50:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:55,094 INFO L93 Difference]: Finished difference Result 23451 states and 30754 transitions. [2021-11-12 23:50:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:50:55,094 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 [2021-11-12 23:50:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:55,119 INFO L225 Difference]: With dead ends: 23451 [2021-11-12 23:50:55,119 INFO L226 Difference]: Without dead ends: 21921 [2021-11-12 23:50:55,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:50:55,126 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 14184 mSDsluCounter, 5809 mSDsCounter, 0 mSdLazyCounter, 8697 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3441.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14184 SdHoareTripleChecker+Valid, 7673 SdHoareTripleChecker+Invalid, 9113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.11ms SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 8697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4238.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:55,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14184 Valid, 7673 Invalid, 9113 Unknown, 0 Unchecked, 42.11ms Time], IncrementalHoareTripleChecker [416 Valid, 8697 Invalid, 0 Unknown, 0 Unchecked, 4238.89ms Time] [2021-11-12 23:50:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21921 states. [2021-11-12 23:50:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21921 to 16211. [2021-11-12 23:50:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2901074472026677) internal successors, (20892), 16210 states have internal predecessors, (20892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:50:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20892 transitions. [2021-11-12 23:50:57,176 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20892 transitions. Word has length 82 [2021-11-12 23:50:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:50:57,177 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20892 transitions. [2021-11-12 23:50:57,177 INFO L471 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) [2021-11-12 23:50:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20892 transitions. [2021-11-12 23:50:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:50:57,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:50:57,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:50:57,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 23:50:57,194 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:50:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:50:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1849994643, now seen corresponding path program 1 times [2021-11-12 23:50:57,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:50:57,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015479165] [2021-11-12 23:50:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:50:57,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:50:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:50:57,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:50:57,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015479165] [2021-11-12 23:50:57,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015479165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:57,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:50:57,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:50:57,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888866455] [2021-11-12 23:50:57,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:57,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:50:57,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:50:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:50:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:50:57,346 INFO L87 Difference]: Start difference. First operand 16211 states and 20892 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) [2021-11-12 23:51:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:06,053 INFO L93 Difference]: Finished difference Result 26369 states and 34776 transitions. [2021-11-12 23:51:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:51:06,054 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 [2021-11-12 23:51:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:06,088 INFO L225 Difference]: With dead ends: 26369 [2021-11-12 23:51:06,088 INFO L226 Difference]: Without dead ends: 24775 [2021-11-12 23:51:06,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:51:06,096 INFO L933 BasicCegarLoop]: 1980 mSDtfsCounter, 8270 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 10115 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3800.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8270 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 10334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.30ms SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 10115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4684.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:06,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8270 Valid, 8674 Invalid, 10334 Unknown, 0 Unchecked, 36.30ms Time], IncrementalHoareTripleChecker [219 Valid, 10115 Invalid, 0 Unknown, 0 Unchecked, 4684.68ms Time] [2021-11-12 23:51:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24775 states. [2021-11-12 23:51:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24775 to 16211. [2021-11-12 23:51:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2900456959367668) internal successors, (20891), 16210 states have internal predecessors, (20891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20891 transitions. [2021-11-12 23:51:08,404 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20891 transitions. Word has length 82 [2021-11-12 23:51:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:08,405 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20891 transitions. [2021-11-12 23:51:08,405 INFO L471 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) [2021-11-12 23:51:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20891 transitions. [2021-11-12 23:51:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:51:08,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:08,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:08,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-12 23:51:08,417 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:51:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1794558322, now seen corresponding path program 1 times [2021-11-12 23:51:08,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:08,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436557436] [2021-11-12 23:51:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:08,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:08,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:08,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436557436] [2021-11-12 23:51:08,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436557436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:08,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:08,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:51:08,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574338718] [2021-11-12 23:51:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:08,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:51:08,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:51:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:51:08,564 INFO L87 Difference]: Start difference. First operand 16211 states and 20891 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) [2021-11-12 23:51:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:17,554 INFO L93 Difference]: Finished difference Result 26501 states and 34980 transitions. [2021-11-12 23:51:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:51:17,554 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 [2021-11-12 23:51:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:17,581 INFO L225 Difference]: With dead ends: 26501 [2021-11-12 23:51:17,581 INFO L226 Difference]: Without dead ends: 24477 [2021-11-12 23:51:17,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:51:17,589 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 14459 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 9296 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3794.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14459 SdHoareTripleChecker+Valid, 7966 SdHoareTripleChecker+Invalid, 9674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.30ms SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 9296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4673.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:17,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14459 Valid, 7966 Invalid, 9674 Unknown, 0 Unchecked, 46.30ms Time], IncrementalHoareTripleChecker [378 Valid, 9296 Invalid, 0 Unknown, 0 Unchecked, 4673.95ms Time] [2021-11-12 23:51:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24477 states. [2021-11-12 23:51:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24477 to 16211. [2021-11-12 23:51:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2899839446708659) internal successors, (20890), 16210 states have internal predecessors, (20890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20890 transitions. [2021-11-12 23:51:19,786 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20890 transitions. Word has length 82 [2021-11-12 23:51:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:19,786 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20890 transitions. [2021-11-12 23:51:19,786 INFO L471 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) [2021-11-12 23:51:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20890 transitions. [2021-11-12 23:51:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:51:19,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:19,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:19,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 23:51:19,797 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:51:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash -994731141, now seen corresponding path program 1 times [2021-11-12 23:51:19,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:19,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049334419] [2021-11-12 23:51:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:19,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:19,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:19,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049334419] [2021-11-12 23:51:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049334419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:19,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:51:19,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890832768] [2021-11-12 23:51:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:51:19,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:51:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:51:19,943 INFO L87 Difference]: Start difference. First operand 16211 states and 20890 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) [2021-11-12 23:51:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:28,322 INFO L93 Difference]: Finished difference Result 25443 states and 33580 transitions. [2021-11-12 23:51:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:51:28,323 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 [2021-11-12 23:51:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:28,351 INFO L225 Difference]: With dead ends: 25443 [2021-11-12 23:51:28,352 INFO L226 Difference]: Without dead ends: 23449 [2021-11-12 23:51:28,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:51:28,359 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 8230 mSDsluCounter, 6612 mSDsCounter, 0 mSdLazyCounter, 9466 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3460.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8230 SdHoareTripleChecker+Valid, 8570 SdHoareTripleChecker+Invalid, 9699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.78ms SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 9466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4338.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:28,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8230 Valid, 8570 Invalid, 9699 Unknown, 0 Unchecked, 34.78ms Time], IncrementalHoareTripleChecker [233 Valid, 9466 Invalid, 0 Unknown, 0 Unchecked, 4338.73ms Time] [2021-11-12 23:51:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23449 states. [2021-11-12 23:51:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23449 to 16211. [2021-11-12 23:51:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2899221934049647) internal successors, (20889), 16210 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20889 transitions. [2021-11-12 23:51:30,582 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20889 transitions. Word has length 82 [2021-11-12 23:51:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:30,583 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20889 transitions. [2021-11-12 23:51:30,583 INFO L471 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) [2021-11-12 23:51:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20889 transitions. [2021-11-12 23:51:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:51:30,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:30,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:30,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-12 23:51:30,596 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:51:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash 468122123, now seen corresponding path program 1 times [2021-11-12 23:51:30,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:30,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589483446] [2021-11-12 23:51:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:30,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:30,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589483446] [2021-11-12 23:51:30,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589483446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:30,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:30,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-12 23:51:30,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145840013] [2021-11-12 23:51:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:30,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:51:30,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:51:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:51:30,776 INFO L87 Difference]: Start difference. First operand 16211 states and 20889 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:40,466 INFO L93 Difference]: Finished difference Result 28450 states and 37629 transitions. [2021-11-12 23:51:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 23:51:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-12 23:51:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:40,498 INFO L225 Difference]: With dead ends: 28450 [2021-11-12 23:51:40,498 INFO L226 Difference]: Without dead ends: 26280 [2021-11-12 23:51:40,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:51:40,505 INFO L933 BasicCegarLoop]: 1957 mSDtfsCounter, 17387 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 9819 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3775.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17387 SdHoareTripleChecker+Valid, 8976 SdHoareTripleChecker+Invalid, 10240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.29ms SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 9819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4652.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:40,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17387 Valid, 8976 Invalid, 10240 Unknown, 0 Unchecked, 45.29ms Time], IncrementalHoareTripleChecker [421 Valid, 9819 Invalid, 0 Unknown, 0 Unchecked, 4652.15ms Time] [2021-11-12 23:51:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26280 states. [2021-11-12 23:51:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26280 to 16211. [2021-11-12 23:51:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.2898604421390638) internal successors, (20888), 16210 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20888 transitions. [2021-11-12 23:51:42,807 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20888 transitions. Word has length 82 [2021-11-12 23:51:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:42,807 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20888 transitions. [2021-11-12 23:51:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20888 transitions. [2021-11-12 23:51:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:51:42,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:42,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:42,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-12 23:51:42,817 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:51:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:42,817 INFO L85 PathProgramCache]: Analyzing trace with hash -526527095, now seen corresponding path program 1 times [2021-11-12 23:51:42,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:42,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523915628] [2021-11-12 23:51:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:42,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:42,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:42,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523915628] [2021-11-12 23:51:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523915628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:42,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:42,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:51:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193824212] [2021-11-12 23:51:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:51:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:51:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:51:42,947 INFO L87 Difference]: Start difference. First operand 16211 states and 20888 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) [2021-11-12 23:51:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:51:51,422 INFO L93 Difference]: Finished difference Result 22408 states and 29118 transitions. [2021-11-12 23:51:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:51:51,423 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 [2021-11-12 23:51:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:51:51,450 INFO L225 Difference]: With dead ends: 22408 [2021-11-12 23:51:51,451 INFO L226 Difference]: Without dead ends: 22398 [2021-11-12 23:51:51,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:51:51,460 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 14120 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 9143 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3603.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14120 SdHoareTripleChecker+Valid, 7881 SdHoareTripleChecker+Invalid, 9518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.57ms SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 9143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4447.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:51:51,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14120 Valid, 7881 Invalid, 9518 Unknown, 0 Unchecked, 43.57ms Time], IncrementalHoareTripleChecker [375 Valid, 9143 Invalid, 0 Unknown, 0 Unchecked, 4447.25ms Time] [2021-11-12 23:51:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22398 states. [2021-11-12 23:51:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22398 to 16211. [2021-11-12 23:51:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16211 states, 16194 states have (on average 1.289798690873163) internal successors, (20887), 16210 states have internal predecessors, (20887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:51:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16211 states to 16211 states and 20887 transitions. [2021-11-12 23:51:53,793 INFO L78 Accepts]: Start accepts. Automaton has 16211 states and 20887 transitions. Word has length 82 [2021-11-12 23:51:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:51:53,794 INFO L470 AbstractCegarLoop]: Abstraction has 16211 states and 20887 transitions. [2021-11-12 23:51:53,794 INFO L471 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) [2021-11-12 23:51:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16211 states and 20887 transitions. [2021-11-12 23:51:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:51:53,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:51:53,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:51:53,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-12 23:51:53,805 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:51:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:51:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -734838592, now seen corresponding path program 1 times [2021-11-12 23:51:53,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:51:53,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445271744] [2021-11-12 23:51:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:51:53,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:51:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:51:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:51:54,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:51:54,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445271744] [2021-11-12 23:51:54,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445271744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:51:54,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:51:54,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-12 23:51:54,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188486095] [2021-11-12 23:51:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:51:54,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:51:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:51:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:51:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:51:54,201 INFO L87 Difference]: Start difference. First operand 16211 states and 20887 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:02,552 INFO L93 Difference]: Finished difference Result 28247 states and 38104 transitions. [2021-11-12 23:52:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:52:02,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-12 23:52:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:02,587 INFO L225 Difference]: With dead ends: 28247 [2021-11-12 23:52:02,587 INFO L226 Difference]: Without dead ends: 25185 [2021-11-12 23:52:02,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:52:02,597 INFO L933 BasicCegarLoop]: 3685 mSDtfsCounter, 21659 mSDsluCounter, 15465 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1542.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21659 SdHoareTripleChecker+Valid, 19058 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.21ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1831.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:02,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21659 Valid, 19058 Invalid, 2614 Unknown, 0 Unchecked, 45.21ms Time], IncrementalHoareTripleChecker [181 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 1831.83ms Time] [2021-11-12 23:52:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-12 23:52:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 16159. [2021-11-12 23:52:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16159 states, 16143 states have (on average 1.289846992504491) internal successors, (20822), 16158 states have internal predecessors, (20822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16159 states to 16159 states and 20822 transitions. [2021-11-12 23:52:05,153 INFO L78 Accepts]: Start accepts. Automaton has 16159 states and 20822 transitions. Word has length 82 [2021-11-12 23:52:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:05,153 INFO L470 AbstractCegarLoop]: Abstraction has 16159 states and 20822 transitions. [2021-11-12 23:52:05,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 16159 states and 20822 transitions. [2021-11-12 23:52:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:05,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:05,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:05,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-12 23:52:05,164 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:52:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1770899711, now seen corresponding path program 1 times [2021-11-12 23:52:05,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:05,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771374522] [2021-11-12 23:52:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:05,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:05,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:05,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771374522] [2021-11-12 23:52:05,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771374522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:05,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:05,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:52:05,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957165568] [2021-11-12 23:52:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:05,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:05,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:05,241 INFO L87 Difference]: Start difference. First operand 16159 states and 20822 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:08,475 INFO L93 Difference]: Finished difference Result 20870 states and 27595 transitions. [2021-11-12 23:52:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-12 23:52:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:08,493 INFO L225 Difference]: With dead ends: 20870 [2021-11-12 23:52:08,493 INFO L226 Difference]: Without dead ends: 16023 [2021-11-12 23:52:08,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:08,501 INFO L933 BasicCegarLoop]: 3711 mSDtfsCounter, 2278 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 5111 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:08,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 5111 Invalid, 234 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [72 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 236.08ms Time] [2021-11-12 23:52:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2021-11-12 23:52:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 13029. [2021-11-12 23:52:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13029 states, 13013 states have (on average 1.3074617690002306) internal successors, (17014), 13028 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13029 states to 13029 states and 17014 transitions. [2021-11-12 23:52:11,070 INFO L78 Accepts]: Start accepts. Automaton has 13029 states and 17014 transitions. Word has length 83 [2021-11-12 23:52:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:11,071 INFO L470 AbstractCegarLoop]: Abstraction has 13029 states and 17014 transitions. [2021-11-12 23:52:11,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13029 states and 17014 transitions. [2021-11-12 23:52:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:11,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:11,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:11,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-12 23:52:11,080 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:52:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1680013345, now seen corresponding path program 1 times [2021-11-12 23:52:11,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:11,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806370236] [2021-11-12 23:52:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:11,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:11,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:11,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806370236] [2021-11-12 23:52:11,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806370236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:11,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:11,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:52:11,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479632998] [2021-11-12 23:52:11,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:11,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:11,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:11,148 INFO L87 Difference]: Start difference. First operand 13029 states and 17014 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:15,225 INFO L93 Difference]: Finished difference Result 19955 states and 26941 transitions. [2021-11-12 23:52:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-12 23:52:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:15,243 INFO L225 Difference]: With dead ends: 19955 [2021-11-12 23:52:15,243 INFO L226 Difference]: Without dead ends: 15301 [2021-11-12 23:52:15,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:15,251 INFO L933 BasicCegarLoop]: 3659 mSDtfsCounter, 1564 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 5772 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:15,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 5772 Invalid, 157 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 183.39ms Time] [2021-11-12 23:52:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15301 states. [2021-11-12 23:52:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15301 to 15299. [2021-11-12 23:52:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15299 states, 15283 states have (on average 1.3284695413204213) internal successors, (20303), 15298 states have internal predecessors, (20303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15299 states to 15299 states and 20303 transitions. [2021-11-12 23:52:19,117 INFO L78 Accepts]: Start accepts. Automaton has 15299 states and 20303 transitions. Word has length 83 [2021-11-12 23:52:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:19,117 INFO L470 AbstractCegarLoop]: Abstraction has 15299 states and 20303 transitions. [2021-11-12 23:52:19,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15299 states and 20303 transitions. [2021-11-12 23:52:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:19,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:19,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:19,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-12 23:52:19,125 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:52:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash -436820007, now seen corresponding path program 1 times [2021-11-12 23:52:19,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:19,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661613460] [2021-11-12 23:52:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:19,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:19,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:19,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661613460] [2021-11-12 23:52:19,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661613460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:19,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:19,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:52:19,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969183001] [2021-11-12 23:52:19,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:19,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:19,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:19,187 INFO L87 Difference]: Start difference. First operand 15299 states and 20303 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:26,091 INFO L93 Difference]: Finished difference Result 32340 states and 43831 transitions. [2021-11-12 23:52:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-12 23:52:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:26,118 INFO L225 Difference]: With dead ends: 32340 [2021-11-12 23:52:26,118 INFO L226 Difference]: Without dead ends: 24094 [2021-11-12 23:52:26,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:26,126 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 2216 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:26,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 6827 Invalid, 194 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 201.06ms Time] [2021-11-12 23:52:26,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24094 states. [2021-11-12 23:52:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24094 to 24078. [2021-11-12 23:52:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24078 states, 24062 states have (on average 1.3350095586401796) internal successors, (32123), 24077 states have internal predecessors, (32123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24078 states to 24078 states and 32123 transitions. [2021-11-12 23:52:32,904 INFO L78 Accepts]: Start accepts. Automaton has 24078 states and 32123 transitions. Word has length 83 [2021-11-12 23:52:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:32,904 INFO L470 AbstractCegarLoop]: Abstraction has 24078 states and 32123 transitions. [2021-11-12 23:52:32,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 24078 states and 32123 transitions. [2021-11-12 23:52:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:32,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:32,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:32,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-12 23:52:32,916 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:52:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -211123533, now seen corresponding path program 1 times [2021-11-12 23:52:32,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:32,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751900106] [2021-11-12 23:52:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:32,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:32,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751900106] [2021-11-12 23:52:32,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751900106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:32,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:32,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:52:32,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55774572] [2021-11-12 23:52:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:32,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:32,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:32,993 INFO L87 Difference]: Start difference. First operand 24078 states and 32123 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:41,466 INFO L93 Difference]: Finished difference Result 43023 states and 58197 transitions. [2021-11-12 23:52:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-12 23:52:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:41,503 INFO L225 Difference]: With dead ends: 43023 [2021-11-12 23:52:41,503 INFO L226 Difference]: Without dead ends: 24914 [2021-11-12 23:52:41,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:41,517 INFO L933 BasicCegarLoop]: 2675 mSDtfsCounter, 2656 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:41,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 3396 Invalid, 219 Unknown, 0 Unchecked, 7.19ms Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 189.59ms Time] [2021-11-12 23:52:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24914 states. [2021-11-12 23:52:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24914 to 20340. [2021-11-12 23:52:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20340 states, 20328 states have (on average 1.341401023219205) internal successors, (27268), 20339 states have internal predecessors, (27268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20340 states to 20340 states and 27268 transitions. [2021-11-12 23:52:48,222 INFO L78 Accepts]: Start accepts. Automaton has 20340 states and 27268 transitions. Word has length 83 [2021-11-12 23:52:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:48,222 INFO L470 AbstractCegarLoop]: Abstraction has 20340 states and 27268 transitions. [2021-11-12 23:52:48,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 20340 states and 27268 transitions. [2021-11-12 23:52:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:52:48,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:48,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:48,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-12 23:52:48,231 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:52:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1655686854, now seen corresponding path program 1 times [2021-11-12 23:52:48,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:52:48,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767031694] [2021-11-12 23:52:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:48,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:52:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:48,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:52:48,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767031694] [2021-11-12 23:52:48,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767031694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:48,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:48,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:52:48,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934449242] [2021-11-12 23:52:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:48,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:48,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:52:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:48,293 INFO L87 Difference]: Start difference. First operand 20340 states and 27268 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:52:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:59,928 INFO L93 Difference]: Finished difference Result 47030 states and 64166 transitions. [2021-11-12 23:52:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-12 23:52:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:59,977 INFO L225 Difference]: With dead ends: 47030 [2021-11-12 23:52:59,977 INFO L226 Difference]: Without dead ends: 33014 [2021-11-12 23:52:59,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:59,992 INFO L933 BasicCegarLoop]: 2854 mSDtfsCounter, 1706 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.14ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:59,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 5057 Invalid, 161 Unknown, 0 Unchecked, 7.14ms Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 271.57ms Time] [2021-11-12 23:53:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33014 states. [2021-11-12 23:53:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33014 to 32998. [2021-11-12 23:53:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32998 states, 32986 states have (on average 1.342993997453465) internal successors, (44300), 32997 states have internal predecessors, (44300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32998 states to 32998 states and 44300 transitions. [2021-11-12 23:53:12,020 INFO L78 Accepts]: Start accepts. Automaton has 32998 states and 44300 transitions. Word has length 83 [2021-11-12 23:53:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:12,020 INFO L470 AbstractCegarLoop]: Abstraction has 32998 states and 44300 transitions. [2021-11-12 23:53:12,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 32998 states and 44300 transitions. [2021-11-12 23:53:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-12 23:53:12,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:12,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:12,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-12 23:53:12,032 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-12 23:53:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1347658320, now seen corresponding path program 1 times [2021-11-12 23:53:12,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:53:12,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604817407] [2021-11-12 23:53:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:53:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:12,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:53:12,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604817407] [2021-11-12 23:53:12,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604817407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:12,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:12,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-12 23:53:12,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851590912] [2021-11-12 23:53:12,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:12,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:53:12,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:53:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:53:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:53:12,436 INFO L87 Difference]: Start difference. First operand 32998 states and 44300 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) [2021-11-12 23:53:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:51,034 INFO L93 Difference]: Finished difference Result 80229 states and 109468 transitions. [2021-11-12 23:53:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:53:51,035 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 [2021-11-12 23:53:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:51,184 INFO L225 Difference]: With dead ends: 80229 [2021-11-12 23:53:51,184 INFO L226 Difference]: Without dead ends: 80216 [2021-11-12 23:53:51,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:53:51,203 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 14989 mSDsluCounter, 15584 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1464.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14989 SdHoareTripleChecker+Valid, 18390 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.80ms SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1869.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:51,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14989 Valid, 18390 Invalid, 2648 Unknown, 0 Unchecked, 40.80ms Time], IncrementalHoareTripleChecker [318 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1869.35ms Time] [2021-11-12 23:53:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80216 states.