./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7 --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 07df7c2ca2abed9bcd09481b78e93a7ff3ff9af974a044cb3d572c2018ab9c02 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:59:04,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:59:04,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:59:04,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:59:04,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:59:04,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:59:04,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:59:04,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:59:04,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:59:04,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:59:04,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:59:04,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:59:04,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:59:04,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:59:04,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:59:04,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:59:04,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:59:04,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:59:04,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:59:04,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:59:04,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:59:04,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:59:04,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:59:04,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:59:04,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:59:04,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:59:04,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:59:04,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:59:04,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:59:04,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:59:04,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:59:04,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:59:04,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:59:04,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:59:04,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:59:04,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:59:04,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:59:04,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:59:04,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:59:04,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:59:04,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:59:04,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:59:04,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:59:04,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:59:04,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:59:04,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:59:04,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:59:04,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:59:04,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:59:04,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:59:04,801 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:59:04,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:59:04,802 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:59:04,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:59:04,803 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:59:04,803 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:59:04,803 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:59:04,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:59:04,804 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:59:04,804 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:59:04,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:59:04,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:59:04,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:59:04,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:59:04,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:59:04,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:59:04,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:59:04,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:59:04,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:59:04,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:59:04,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:59:04,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:59:04,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:59:04,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:59:04,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:59:04,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:59:04,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:59:04,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:59:04,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:59:04,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:59:04,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:59:04,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:59:04,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:59:04,813 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_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07df7c2ca2abed9bcd09481b78e93a7ff3ff9af974a044cb3d572c2018ab9c02 [2021-11-25 17:59:05,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:59:05,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:59:05,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:59:05,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:59:05,163 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:59:05,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:59:05,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/data/1889fa15c/a7f844cdb1e14b1abdb921b483d6880c/FLAG06b9dd22c [2021-11-25 17:59:06,491 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:59:06,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:59:06,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/data/1889fa15c/a7f844cdb1e14b1abdb921b483d6880c/FLAG06b9dd22c [2021-11-25 17:59:06,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/data/1889fa15c/a7f844cdb1e14b1abdb921b483d6880c [2021-11-25 17:59:06,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:59:06,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:59:06,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:59:06,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:59:06,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:59:06,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:59:06" (1/1) ... [2021-11-25 17:59:06,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db9f1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:06, skipping insertion in model container [2021-11-25 17:59:06,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:59:06" (1/1) ... [2021-11-25 17:59:06,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:59:07,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:59:08,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21603,21616] [2021-11-25 17:59:08,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27289,27302] [2021-11-25 17:59:08,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28711,28724] [2021-11-25 17:59:08,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29569,29582] [2021-11-25 17:59:08,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31319,31332] [2021-11-25 17:59:08,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32177,32190] [2021-11-25 17:59:08,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33363,33376] [2021-11-25 17:59:08,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36132,36145] [2021-11-25 17:59:08,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36993,37006] [2021-11-25 17:59:08,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38182,38195] [2021-11-25 17:59:08,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40387,40400] [2021-11-25 17:59:08,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44640,44653] [2021-11-25 17:59:08,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45501,45514] [2021-11-25 17:59:08,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46690,46703] [2021-11-25 17:59:08,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48895,48908] [2021-11-25 17:59:08,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52584,52597] [2021-11-25 17:59:08,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[59245,59258] [2021-11-25 17:59:08,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60106,60119] [2021-11-25 17:59:08,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61295,61308] [2021-11-25 17:59:08,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63500,63513] [2021-11-25 17:59:08,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67189,67202] [2021-11-25 17:59:08,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[73286,73299] [2021-11-25 17:59:08,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[84175,84188] [2021-11-25 17:59:08,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[85036,85049] [2021-11-25 17:59:08,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86229,86242] [2021-11-25 17:59:08,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[88438,88451] [2021-11-25 17:59:09,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92411,92424] [2021-11-25 17:59:09,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[99364,99377] [2021-11-25 17:59:09,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[111409,111422] [2021-11-25 17:59:09,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[132586,132599] [2021-11-25 17:59:09,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[133447,133460] [2021-11-25 17:59:09,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[134636,134649] [2021-11-25 17:59:09,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[136841,136854] [2021-11-25 17:59:09,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[140530,140543] [2021-11-25 17:59:09,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[146627,146640] [2021-11-25 17:59:09,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[156952,156965] [2021-11-25 17:59:09,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[174689,174702] [2021-11-25 17:59:11,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:59:11,952 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:59:12,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21603,21616] [2021-11-25 17:59:12,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27289,27302] [2021-11-25 17:59:12,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28711,28724] [2021-11-25 17:59:12,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29569,29582] [2021-11-25 17:59:12,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31319,31332] [2021-11-25 17:59:12,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32177,32190] [2021-11-25 17:59:12,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33363,33376] [2021-11-25 17:59:12,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36132,36145] [2021-11-25 17:59:12,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36993,37006] [2021-11-25 17:59:12,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38182,38195] [2021-11-25 17:59:12,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40387,40400] [2021-11-25 17:59:12,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44640,44653] [2021-11-25 17:59:12,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[45501,45514] [2021-11-25 17:59:12,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46690,46703] [2021-11-25 17:59:12,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48895,48908] [2021-11-25 17:59:12,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52584,52597] [2021-11-25 17:59:12,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[59245,59258] [2021-11-25 17:59:12,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60106,60119] [2021-11-25 17:59:12,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61295,61308] [2021-11-25 17:59:12,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63500,63513] [2021-11-25 17:59:12,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67189,67202] [2021-11-25 17:59:12,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[73286,73299] [2021-11-25 17:59:12,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[84175,84188] [2021-11-25 17:59:12,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[85036,85049] [2021-11-25 17:59:12,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86229,86242] [2021-11-25 17:59:12,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[88438,88451] [2021-11-25 17:59:12,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92411,92424] [2021-11-25 17:59:12,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[99364,99377] [2021-11-25 17:59:12,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[111409,111422] [2021-11-25 17:59:12,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[132586,132599] [2021-11-25 17:59:12,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[133447,133460] [2021-11-25 17:59:12,953 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[134636,134649] [2021-11-25 17:59:12,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[136841,136854] [2021-11-25 17:59:12,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[140530,140543] [2021-11-25 17:59:13,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[146627,146640] [2021-11-25 17:59:13,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[156952,156965] [2021-11-25 17:59:13,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[174689,174702] [2021-11-25 17:59:15,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:59:15,127 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:59:15,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15 WrapperNode [2021-11-25 17:59:15,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:59:15,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:59:15,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:59:15,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:59:15,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:15,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:15,741 INFO L137 Inliner]: procedures = 28, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23263 [2021-11-25 17:59:15,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:59:15,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:59:15,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:59:15,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:59:15,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:15,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:15,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:15,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:16,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:16,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:16,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:16,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:59:16,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:59:16,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:59:16,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:59:16,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (1/1) ... [2021-11-25 17:59:16,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:59:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:59:16,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:59:16,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb95a628-d8ea-4592-a47e-364646662fb3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:59:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:59:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:59:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:59:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:59:17,914 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:59:17,916 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:59:29,793 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:59:31,892 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:59:31,892 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:59:31,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:59:31 BoogieIcfgContainer [2021-11-25 17:59:31,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:59:31,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:59:31,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:59:31,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:59:31,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:59:06" (1/3) ... [2021-11-25 17:59:31,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df42354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:59:31, skipping insertion in model container [2021-11-25 17:59:31,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:15" (2/3) ... [2021-11-25 17:59:31,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df42354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:59:31, skipping insertion in model container [2021-11-25 17:59:31,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:59:31" (3/3) ... [2021-11-25 17:59:31,951 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:59:31,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:59:31,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-25 17:59:32,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:59:32,066 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 [2021-11-25 17:59:32,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-25 17:59:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 3669 states, 3631 states have (on average 1.881024511153952) internal successors, (6830), 3668 states have internal predecessors, (6830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 17:59:32,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:32,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:32,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1289712745, now seen corresponding path program 1 times [2021-11-25 17:59:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044559328] [2021-11-25 17:59:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:32,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:33,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:33,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044559328] [2021-11-25 17:59:33,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044559328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:33,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:33,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:33,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654706504] [2021-11-25 17:59:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:33,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:33,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:33,425 INFO L87 Difference]: Start difference. First operand has 3669 states, 3631 states have (on average 1.881024511153952) internal successors, (6830), 3668 states have internal predecessors, (6830), 0 states have call successors, (0), 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 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:36,979 INFO L93 Difference]: Finished difference Result 5234 states and 9447 transitions. [2021-11-25 17:59:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-25 17:59:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:37,026 INFO L225 Difference]: With dead ends: 5234 [2021-11-25 17:59:37,027 INFO L226 Difference]: Without dead ends: 2835 [2021-11-25 17:59:37,039 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 [2021-11-25 17:59:37,043 INFO L933 BasicCegarLoop]: 3079 mSDtfsCounter, 14813 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14813 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:37,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14813 Valid, 3183 Invalid, 2253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 17:59:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-25 17:59:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-25 17:59:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2798 states have (on average 1.2877055039313796) internal successors, (3603), 2834 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3603 transitions. [2021-11-25 17:59:37,285 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3603 transitions. Word has length 115 [2021-11-25 17:59:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:37,287 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 3603 transitions. [2021-11-25 17:59:37,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3603 transitions. [2021-11-25 17:59:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 17:59:37,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:37,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:37,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:59:37,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -318332090, now seen corresponding path program 1 times [2021-11-25 17:59:37,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853747502] [2021-11-25 17:59:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:37,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:37,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:37,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853747502] [2021-11-25 17:59:37,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853747502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:37,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:37,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:37,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788801615] [2021-11-25 17:59:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:37,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:37,725 INFO L87 Difference]: Start difference. First operand 2835 states and 3603 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:39,853 INFO L93 Difference]: Finished difference Result 4394 states and 5803 transitions. [2021-11-25 17:59:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-25 17:59:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:39,871 INFO L225 Difference]: With dead ends: 4394 [2021-11-25 17:59:39,871 INFO L226 Difference]: Without dead ends: 2239 [2021-11-25 17:59:39,876 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 [2021-11-25 17:59:39,877 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 8721 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8721 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8721 Valid, 1609 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 17:59:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2021-11-25 17:59:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2239. [2021-11-25 17:59:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2202 states have (on average 1.3360581289736604) internal successors, (2942), 2238 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2942 transitions. [2021-11-25 17:59:39,992 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2942 transitions. Word has length 116 [2021-11-25 17:59:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:39,993 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 2942 transitions. [2021-11-25 17:59:39,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2942 transitions. [2021-11-25 17:59:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 17:59:40,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:40,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:40,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:59:40,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -316440620, now seen corresponding path program 1 times [2021-11-25 17:59:40,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390813096] [2021-11-25 17:59:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:40,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:40,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:40,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390813096] [2021-11-25 17:59:40,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390813096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:40,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:40,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:40,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670565154] [2021-11-25 17:59:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:40,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:40,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:40,277 INFO L87 Difference]: Start difference. First operand 2239 states and 2942 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:42,386 INFO L93 Difference]: Finished difference Result 3798 states and 5141 transitions. [2021-11-25 17:59:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:42,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-25 17:59:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:42,399 INFO L225 Difference]: With dead ends: 3798 [2021-11-25 17:59:42,400 INFO L226 Difference]: Without dead ends: 2079 [2021-11-25 17:59:42,403 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 [2021-11-25 17:59:42,411 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 7742 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7742 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:42,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7742 Valid, 1209 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 17:59:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2021-11-25 17:59:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2079. [2021-11-25 17:59:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2042 states have (on average 1.3462291870714986) internal successors, (2749), 2078 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2749 transitions. [2021-11-25 17:59:42,505 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2749 transitions. Word has length 117 [2021-11-25 17:59:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:42,506 INFO L470 AbstractCegarLoop]: Abstraction has 2079 states and 2749 transitions. [2021-11-25 17:59:42,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2749 transitions. [2021-11-25 17:59:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 17:59:42,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:42,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:42,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:59:42,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash -313427875, now seen corresponding path program 1 times [2021-11-25 17:59:42,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:42,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545354130] [2021-11-25 17:59:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:42,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:42,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:42,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545354130] [2021-11-25 17:59:42,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545354130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:42,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:42,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:42,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649076849] [2021-11-25 17:59:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:42,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:42,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:42,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:42,758 INFO L87 Difference]: Start difference. First operand 2079 states and 2749 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:44,399 INFO L93 Difference]: Finished difference Result 3638 states and 4947 transitions. [2021-11-25 17:59:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-25 17:59:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:44,414 INFO L225 Difference]: With dead ends: 3638 [2021-11-25 17:59:44,415 INFO L226 Difference]: Without dead ends: 1903 [2021-11-25 17:59:44,418 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 [2021-11-25 17:59:44,420 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 7448 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7448 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7448 Valid, 1277 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 17:59:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-11-25 17:59:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1903. [2021-11-25 17:59:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1866 states have (on average 1.369774919614148) internal successors, (2556), 1902 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2556 transitions. [2021-11-25 17:59:44,520 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2556 transitions. Word has length 118 [2021-11-25 17:59:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:44,521 INFO L470 AbstractCegarLoop]: Abstraction has 1903 states and 2556 transitions. [2021-11-25 17:59:44,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2556 transitions. [2021-11-25 17:59:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 17:59:44,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:44,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:44,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:59:44,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash 950435561, now seen corresponding path program 1 times [2021-11-25 17:59:44,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:44,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371591505] [2021-11-25 17:59:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:44,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:44,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371591505] [2021-11-25 17:59:44,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371591505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:44,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:44,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:44,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681980436] [2021-11-25 17:59:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:44,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:44,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:44,733 INFO L87 Difference]: Start difference. First operand 1903 states and 2556 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:46,250 INFO L93 Difference]: Finished difference Result 3462 states and 4753 transitions. [2021-11-25 17:59:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-25 17:59:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:46,263 INFO L225 Difference]: With dead ends: 3462 [2021-11-25 17:59:46,263 INFO L226 Difference]: Without dead ends: 1779 [2021-11-25 17:59:46,267 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 [2021-11-25 17:59:46,268 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 7141 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7141 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:46,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7141 Valid, 1265 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:59:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-25 17:59:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1779. [2021-11-25 17:59:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1742 states have (on average 1.3909299655568312) internal successors, (2423), 1778 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2423 transitions. [2021-11-25 17:59:46,373 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2423 transitions. Word has length 119 [2021-11-25 17:59:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:46,373 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2423 transitions. [2021-11-25 17:59:46,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2423 transitions. [2021-11-25 17:59:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 17:59:46,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:46,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:46,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:59:46,465 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1343626170, now seen corresponding path program 1 times [2021-11-25 17:59:46,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:46,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005511903] [2021-11-25 17:59:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:46,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:46,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:46,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005511903] [2021-11-25 17:59:46,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005511903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:46,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694213707] [2021-11-25 17:59:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:46,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:46,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:46,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:46,676 INFO L87 Difference]: Start difference. First operand 1779 states and 2423 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:48,136 INFO L93 Difference]: Finished difference Result 3338 states and 4619 transitions. [2021-11-25 17:59:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-25 17:59:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:48,148 INFO L225 Difference]: With dead ends: 3338 [2021-11-25 17:59:48,148 INFO L226 Difference]: Without dead ends: 1705 [2021-11-25 17:59:48,151 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 [2021-11-25 17:59:48,153 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 6943 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6943 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:48,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6943 Valid, 1229 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:59:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-25 17:59:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1705. [2021-11-25 17:59:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1668 states have (on average 1.4052757793764987) internal successors, (2344), 1704 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2344 transitions. [2021-11-25 17:59:48,279 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2344 transitions. Word has length 120 [2021-11-25 17:59:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:48,279 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2344 transitions. [2021-11-25 17:59:48,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2344 transitions. [2021-11-25 17:59:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 17:59:48,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:48,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:48,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:59:48,287 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -675655714, now seen corresponding path program 1 times [2021-11-25 17:59:48,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784784426] [2021-11-25 17:59:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:48,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:48,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:48,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784784426] [2021-11-25 17:59:48,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784784426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:48,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:48,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:48,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145446619] [2021-11-25 17:59:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:48,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:48,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:48,463 INFO L87 Difference]: Start difference. First operand 1705 states and 2344 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:50,704 INFO L93 Difference]: Finished difference Result 4182 states and 5810 transitions. [2021-11-25 17:59:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-25 17:59:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:50,721 INFO L225 Difference]: With dead ends: 4182 [2021-11-25 17:59:50,722 INFO L226 Difference]: Without dead ends: 2583 [2021-11-25 17:59:50,725 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 [2021-11-25 17:59:50,726 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 9268 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9268 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:50,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9268 Valid, 1893 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 17:59:50,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2021-11-25 17:59:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2457. [2021-11-25 17:59:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2420 states have (on average 1.4347107438016529) internal successors, (3472), 2456 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3472 transitions. [2021-11-25 17:59:50,942 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3472 transitions. Word has length 121 [2021-11-25 17:59:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:50,942 INFO L470 AbstractCegarLoop]: Abstraction has 2457 states and 3472 transitions. [2021-11-25 17:59:50,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3472 transitions. [2021-11-25 17:59:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-25 17:59:50,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:50,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:50,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:59:50,951 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash -230966383, now seen corresponding path program 1 times [2021-11-25 17:59:50,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:50,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596480015] [2021-11-25 17:59:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:50,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:51,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:51,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596480015] [2021-11-25 17:59:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596480015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:51,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:51,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:51,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434569603] [2021-11-25 17:59:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:51,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:51,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:51,138 INFO L87 Difference]: Start difference. First operand 2457 states and 3472 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:52,591 INFO L93 Difference]: Finished difference Result 4808 states and 6837 transitions. [2021-11-25 17:59:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:59:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-25 17:59:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:52,605 INFO L225 Difference]: With dead ends: 4808 [2021-11-25 17:59:52,605 INFO L226 Difference]: Without dead ends: 2443 [2021-11-25 17:59:52,609 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 [2021-11-25 17:59:52,610 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 6693 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6693 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:52,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6693 Valid, 1183 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 17:59:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2021-11-25 17:59:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2443. [2021-11-25 17:59:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2406 states have (on average 1.4359933499584372) internal successors, (3455), 2442 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3455 transitions. [2021-11-25 17:59:52,880 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3455 transitions. Word has length 122 [2021-11-25 17:59:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:52,880 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3455 transitions. [2021-11-25 17:59:52,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:52,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3455 transitions. [2021-11-25 17:59:52,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 17:59:52,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:52,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:52,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:59:52,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1090891821, now seen corresponding path program 1 times [2021-11-25 17:59:52,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:52,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573510091] [2021-11-25 17:59:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:52,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:53,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:53,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573510091] [2021-11-25 17:59:53,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573510091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:53,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:53,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:59:53,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99559042] [2021-11-25 17:59:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:53,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:59:53,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:59:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:59:53,222 INFO L87 Difference]: Start difference. First operand 2443 states and 3455 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:58,047 INFO L93 Difference]: Finished difference Result 4513 states and 6323 transitions. [2021-11-25 17:59:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 17:59:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 17:59:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:58,069 INFO L225 Difference]: With dead ends: 4513 [2021-11-25 17:59:58,070 INFO L226 Difference]: Without dead ends: 4283 [2021-11-25 17:59:58,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:59:58,073 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 9675 mSDsluCounter, 6381 mSDsCounter, 0 mSdLazyCounter, 7318 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 7573 SdHoareTripleChecker+Invalid, 7375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 7318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:58,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9675 Valid, 7573 Invalid, 7375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 7318 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 17:59:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2021-11-25 17:59:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 2452. [2021-11-25 17:59:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2415 states have (on average 1.4356107660455486) internal successors, (3467), 2451 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3467 transitions. [2021-11-25 17:59:58,329 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3467 transitions. Word has length 123 [2021-11-25 17:59:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:58,329 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 3467 transitions. [2021-11-25 17:59:58,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3467 transitions. [2021-11-25 17:59:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 17:59:58,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:58,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:58,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:59:58,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 17:59:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:58,339 INFO L85 PathProgramCache]: Analyzing trace with hash 315857799, now seen corresponding path program 1 times [2021-11-25 17:59:58,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:58,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430348049] [2021-11-25 17:59:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:58,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:58,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:58,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430348049] [2021-11-25 17:59:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430348049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:58,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:58,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:59:58,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176397038] [2021-11-25 17:59:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:58,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:59:58,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:59:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:59:58,653 INFO L87 Difference]: Start difference. First operand 2452 states and 3467 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:03,969 INFO L93 Difference]: Finished difference Result 4740 states and 6636 transitions. [2021-11-25 18:00:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:00:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 18:00:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:03,996 INFO L225 Difference]: With dead ends: 4740 [2021-11-25 18:00:03,996 INFO L226 Difference]: Without dead ends: 4426 [2021-11-25 18:00:03,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:00:03,999 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 7025 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 8912 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7025 SdHoareTripleChecker+Valid, 9508 SdHoareTripleChecker+Invalid, 8943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 8912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:04,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7025 Valid, 9508 Invalid, 8943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 8912 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 18:00:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2021-11-25 18:00:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 2452. [2021-11-25 18:00:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2415 states have (on average 1.4351966873706004) internal successors, (3466), 2451 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3466 transitions. [2021-11-25 18:00:04,272 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3466 transitions. Word has length 123 [2021-11-25 18:00:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:04,273 INFO L470 AbstractCegarLoop]: Abstraction has 2452 states and 3466 transitions. [2021-11-25 18:00:04,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3466 transitions. [2021-11-25 18:00:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 18:00:04,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:04,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:04,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:00:04,282 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -105701448, now seen corresponding path program 1 times [2021-11-25 18:00:04,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648534447] [2021-11-25 18:00:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:04,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:04,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:04,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648534447] [2021-11-25 18:00:04,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648534447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:04,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:04,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:00:04,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132580375] [2021-11-25 18:00:04,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:04,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:00:04,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:00:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:00:04,573 INFO L87 Difference]: Start difference. First operand 2452 states and 3466 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:09,092 INFO L93 Difference]: Finished difference Result 4330 states and 6081 transitions. [2021-11-25 18:00:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:00:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 18:00:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:09,106 INFO L225 Difference]: With dead ends: 4330 [2021-11-25 18:00:09,106 INFO L226 Difference]: Without dead ends: 4135 [2021-11-25 18:00:09,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:00:09,109 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 6444 mSDsluCounter, 6327 mSDsCounter, 0 mSdLazyCounter, 7413 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6444 SdHoareTripleChecker+Valid, 7606 SdHoareTripleChecker+Invalid, 7455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 7413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:09,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6444 Valid, 7606 Invalid, 7455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 7413 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:00:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-11-25 18:00:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 2454. [2021-11-25 18:00:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2417 states have (on average 1.4348365742656186) internal successors, (3468), 2453 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3468 transitions. [2021-11-25 18:00:09,329 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3468 transitions. Word has length 123 [2021-11-25 18:00:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:09,329 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 3468 transitions. [2021-11-25 18:00:09,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3468 transitions. [2021-11-25 18:00:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 18:00:09,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:09,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:09,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:00:09,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1967446368, now seen corresponding path program 1 times [2021-11-25 18:00:09,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402250497] [2021-11-25 18:00:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:09,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:09,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:09,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402250497] [2021-11-25 18:00:09,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402250497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:09,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:09,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:09,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696661173] [2021-11-25 18:00:09,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:09,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:09,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:09,563 INFO L87 Difference]: Start difference. First operand 2454 states and 3468 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:12,511 INFO L93 Difference]: Finished difference Result 4300 states and 6042 transitions. [2021-11-25 18:00:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:12,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 18:00:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:12,521 INFO L225 Difference]: With dead ends: 4300 [2021-11-25 18:00:12,522 INFO L226 Difference]: Without dead ends: 4020 [2021-11-25 18:00:12,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:00:12,525 INFO L933 BasicCegarLoop]: 1336 mSDtfsCounter, 9446 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 5328 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9446 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:12,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9446 Valid, 5645 Invalid, 5362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 5328 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:00:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2021-11-25 18:00:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 2454. [2021-11-25 18:00:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2417 states have (on average 1.4344228382292097) internal successors, (3467), 2453 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3467 transitions. [2021-11-25 18:00:12,725 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3467 transitions. Word has length 123 [2021-11-25 18:00:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:12,725 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 3467 transitions. [2021-11-25 18:00:12,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3467 transitions. [2021-11-25 18:00:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 18:00:12,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:12,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:12,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:00:12,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 984788493, now seen corresponding path program 1 times [2021-11-25 18:00:12,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:12,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598478619] [2021-11-25 18:00:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:12,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:12,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:12,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598478619] [2021-11-25 18:00:12,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598478619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:12,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:12,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:00:12,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339708303] [2021-11-25 18:00:12,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:12,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:00:12,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:00:12,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:00:12,973 INFO L87 Difference]: Start difference. First operand 2454 states and 3467 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:16,757 INFO L93 Difference]: Finished difference Result 3696 states and 5074 transitions. [2021-11-25 18:00:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:00:16,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 18:00:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:16,764 INFO L225 Difference]: With dead ends: 3696 [2021-11-25 18:00:16,765 INFO L226 Difference]: Without dead ends: 3691 [2021-11-25 18:00:16,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:00:16,766 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 11375 mSDsluCounter, 4031 mSDsCounter, 0 mSdLazyCounter, 5458 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11375 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 6281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 5458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:16,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11375 Valid, 5128 Invalid, 6281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 5458 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:00:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2021-11-25 18:00:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 2454. [2021-11-25 18:00:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2417 states have (on average 1.4335953661563923) internal successors, (3465), 2453 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3465 transitions. [2021-11-25 18:00:16,957 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3465 transitions. Word has length 123 [2021-11-25 18:00:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:16,958 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 3465 transitions. [2021-11-25 18:00:16,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3465 transitions. [2021-11-25 18:00:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 18:00:16,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:16,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:16,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:00:16,964 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:16,965 INFO L85 PathProgramCache]: Analyzing trace with hash -313101545, now seen corresponding path program 1 times [2021-11-25 18:00:16,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:16,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956090548] [2021-11-25 18:00:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:16,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:17,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956090548] [2021-11-25 18:00:17,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956090548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:17,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:17,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:00:17,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642790263] [2021-11-25 18:00:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:17,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:00:17,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:00:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:00:17,166 INFO L87 Difference]: Start difference. First operand 2454 states and 3465 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:19,581 INFO L93 Difference]: Finished difference Result 3975 states and 5394 transitions. [2021-11-25 18:00:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:00:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-25 18:00:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:19,587 INFO L225 Difference]: With dead ends: 3975 [2021-11-25 18:00:19,587 INFO L226 Difference]: Without dead ends: 3001 [2021-11-25 18:00:19,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:00:19,591 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 8743 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8743 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:19,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8743 Valid, 2874 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:00:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2021-11-25 18:00:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2454. [2021-11-25 18:00:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2417 states have (on average 1.4331816301199833) internal successors, (3464), 2453 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3464 transitions. [2021-11-25 18:00:19,920 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3464 transitions. Word has length 123 [2021-11-25 18:00:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 3464 transitions. [2021-11-25 18:00:19,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3464 transitions. [2021-11-25 18:00:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:19,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:19,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:19,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:00:19,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1513260891, now seen corresponding path program 1 times [2021-11-25 18:00:19,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:19,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135399160] [2021-11-25 18:00:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:19,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:20,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135399160] [2021-11-25 18:00:20,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135399160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:20,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:20,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:20,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932591329] [2021-11-25 18:00:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:20,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:20,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:20,141 INFO L87 Difference]: Start difference. First operand 2454 states and 3464 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:22,820 INFO L93 Difference]: Finished difference Result 3026 states and 4250 transitions. [2021-11-25 18:00:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:22,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:22,827 INFO L225 Difference]: With dead ends: 3026 [2021-11-25 18:00:22,827 INFO L226 Difference]: Without dead ends: 2567 [2021-11-25 18:00:22,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:00:22,830 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 6867 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 4587 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6867 SdHoareTripleChecker+Valid, 4930 SdHoareTripleChecker+Invalid, 4610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:22,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6867 Valid, 4930 Invalid, 4610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 4587 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:00:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-25 18:00:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2443. [2021-11-25 18:00:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2406 states have (on average 1.4339152119700749) internal successors, (3450), 2442 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3450 transitions. [2021-11-25 18:00:23,090 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3450 transitions. Word has length 125 [2021-11-25 18:00:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:23,090 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3450 transitions. [2021-11-25 18:00:23,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3450 transitions. [2021-11-25 18:00:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:23,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:23,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:23,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:00:23,096 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1922041167, now seen corresponding path program 1 times [2021-11-25 18:00:23,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992760445] [2021-11-25 18:00:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:23,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:23,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992760445] [2021-11-25 18:00:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992760445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:23,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:23,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:23,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047996786] [2021-11-25 18:00:23,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:23,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:23,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:23,282 INFO L87 Difference]: Start difference. First operand 2443 states and 3450 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:26,719 INFO L93 Difference]: Finished difference Result 4213 states and 5921 transitions. [2021-11-25 18:00:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:26,738 INFO L225 Difference]: With dead ends: 4213 [2021-11-25 18:00:26,739 INFO L226 Difference]: Without dead ends: 4029 [2021-11-25 18:00:26,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:00:26,741 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 9134 mSDsluCounter, 4526 mSDsCounter, 0 mSdLazyCounter, 5628 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9134 SdHoareTripleChecker+Valid, 5867 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:26,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9134 Valid, 5867 Invalid, 5682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5628 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:00:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2021-11-25 18:00:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 2443. [2021-11-25 18:00:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2406 states have (on average 1.4334995843724023) internal successors, (3449), 2442 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3449 transitions. [2021-11-25 18:00:27,007 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3449 transitions. Word has length 125 [2021-11-25 18:00:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:27,008 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3449 transitions. [2021-11-25 18:00:27,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3449 transitions. [2021-11-25 18:00:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:27,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:27,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:27,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:00:27,014 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash 965923929, now seen corresponding path program 1 times [2021-11-25 18:00:27,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412543889] [2021-11-25 18:00:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:27,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:27,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412543889] [2021-11-25 18:00:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412543889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:27,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:27,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:27,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368794240] [2021-11-25 18:00:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:27,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:27,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:27,199 INFO L87 Difference]: Start difference. First operand 2443 states and 3449 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:30,259 INFO L93 Difference]: Finished difference Result 3989 states and 5539 transitions. [2021-11-25 18:00:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:30,268 INFO L225 Difference]: With dead ends: 3989 [2021-11-25 18:00:30,268 INFO L226 Difference]: Without dead ends: 3861 [2021-11-25 18:00:30,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:00:30,272 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 6103 mSDsluCounter, 3817 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6103 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 5271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:30,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6103 Valid, 4982 Invalid, 5271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 5038 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:00:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2021-11-25 18:00:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 2443. [2021-11-25 18:00:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 2406 states have (on average 1.4330839567747298) internal successors, (3448), 2442 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3448 transitions. [2021-11-25 18:00:30,589 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3448 transitions. Word has length 125 [2021-11-25 18:00:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:30,589 INFO L470 AbstractCegarLoop]: Abstraction has 2443 states and 3448 transitions. [2021-11-25 18:00:30,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3448 transitions. [2021-11-25 18:00:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:30,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:30,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:30,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:00:30,596 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash -922071671, now seen corresponding path program 1 times [2021-11-25 18:00:30,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:30,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025372627] [2021-11-25 18:00:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:30,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:30,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:30,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025372627] [2021-11-25 18:00:30,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025372627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:30,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:30,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:00:30,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621091200] [2021-11-25 18:00:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:30,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:00:30,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:00:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:00:30,875 INFO L87 Difference]: Start difference. First operand 2443 states and 3448 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:36,623 INFO L93 Difference]: Finished difference Result 5171 states and 7200 transitions. [2021-11-25 18:00:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:00:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:36,631 INFO L225 Difference]: With dead ends: 5171 [2021-11-25 18:00:36,631 INFO L226 Difference]: Without dead ends: 4857 [2021-11-25 18:00:36,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:00:36,635 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 15762 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 7070 mSolverCounterSat, 1170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15762 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 8240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1170 IncrementalHoareTripleChecker+Valid, 7070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:36,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15762 Valid, 7180 Invalid, 8240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1170 Valid, 7070 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 18:00:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-11-25 18:00:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 2447. [2021-11-25 18:00:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2410 states have (on average 1.4323651452282158) internal successors, (3452), 2446 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3452 transitions. [2021-11-25 18:00:36,975 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3452 transitions. Word has length 125 [2021-11-25 18:00:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:36,975 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3452 transitions. [2021-11-25 18:00:36,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3452 transitions. [2021-11-25 18:00:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:36,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:36,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:36,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:00:36,982 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:36,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:36,983 INFO L85 PathProgramCache]: Analyzing trace with hash 63118702, now seen corresponding path program 1 times [2021-11-25 18:00:36,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:36,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105366406] [2021-11-25 18:00:36,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:36,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:37,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105366406] [2021-11-25 18:00:37,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105366406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:37,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:37,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:37,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672421629] [2021-11-25 18:00:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:37,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:37,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:37,321 INFO L87 Difference]: Start difference. First operand 2447 states and 3452 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:41,404 INFO L93 Difference]: Finished difference Result 4228 states and 5933 transitions. [2021-11-25 18:00:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:00:41,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:41,409 INFO L225 Difference]: With dead ends: 4228 [2021-11-25 18:00:41,409 INFO L226 Difference]: Without dead ends: 4033 [2021-11-25 18:00:41,411 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 [2021-11-25 18:00:41,411 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 7191 mSDsluCounter, 5932 mSDsCounter, 0 mSdLazyCounter, 6753 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7191 SdHoareTripleChecker+Valid, 7414 SdHoareTripleChecker+Invalid, 6791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:41,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7191 Valid, 7414 Invalid, 6791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 6753 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:00:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-11-25 18:00:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 2447. [2021-11-25 18:00:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2410 states have (on average 1.4319502074688797) internal successors, (3451), 2446 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3451 transitions. [2021-11-25 18:00:41,761 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3451 transitions. Word has length 125 [2021-11-25 18:00:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:41,761 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3451 transitions. [2021-11-25 18:00:41,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3451 transitions. [2021-11-25 18:00:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:41,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:41,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:00:41,765 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -772723687, now seen corresponding path program 1 times [2021-11-25 18:00:41,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:41,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895098235] [2021-11-25 18:00:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:41,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:41,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:41,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895098235] [2021-11-25 18:00:41,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895098235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:41,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:41,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:41,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497792176] [2021-11-25 18:00:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:41,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:41,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:41,961 INFO L87 Difference]: Start difference. First operand 2447 states and 3451 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:45,627 INFO L93 Difference]: Finished difference Result 4511 states and 6333 transitions. [2021-11-25 18:00:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:45,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:45,632 INFO L225 Difference]: With dead ends: 4511 [2021-11-25 18:00:45,632 INFO L226 Difference]: Without dead ends: 4009 [2021-11-25 18:00:45,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:00:45,634 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 9421 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 5404 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9421 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 5436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:45,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9421 Valid, 5632 Invalid, 5436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5404 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 18:00:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-11-25 18:00:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 2447. [2021-11-25 18:00:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2410 states have (on average 1.4311203319502075) internal successors, (3449), 2446 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3449 transitions. [2021-11-25 18:00:45,939 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3449 transitions. Word has length 125 [2021-11-25 18:00:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:45,940 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3449 transitions. [2021-11-25 18:00:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3449 transitions. [2021-11-25 18:00:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:45,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:45,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:45,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:00:45,945 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1510356724, now seen corresponding path program 1 times [2021-11-25 18:00:45,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974882219] [2021-11-25 18:00:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:45,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:46,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974882219] [2021-11-25 18:00:46,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974882219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:46,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:46,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:00:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480239822] [2021-11-25 18:00:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:46,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:00:46,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:00:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:46,126 INFO L87 Difference]: Start difference. First operand 2447 states and 3449 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:49,581 INFO L93 Difference]: Finished difference Result 3697 states and 5062 transitions. [2021-11-25 18:00:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:00:49,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:49,586 INFO L225 Difference]: With dead ends: 3697 [2021-11-25 18:00:49,586 INFO L226 Difference]: Without dead ends: 3692 [2021-11-25 18:00:49,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:00:49,588 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 6156 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 4949 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 5390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 4949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:49,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6156 Valid, 4487 Invalid, 5390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 4949 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:00:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-11-25 18:00:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 2447. [2021-11-25 18:00:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2410 states have (on average 1.4302904564315353) internal successors, (3447), 2446 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3447 transitions. [2021-11-25 18:00:49,898 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3447 transitions. Word has length 125 [2021-11-25 18:00:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:49,898 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3447 transitions. [2021-11-25 18:00:49,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3447 transitions. [2021-11-25 18:00:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:49,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:49,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:49,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:00:49,904 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -968028499, now seen corresponding path program 1 times [2021-11-25 18:00:49,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:49,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996484489] [2021-11-25 18:00:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:49,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:50,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996484489] [2021-11-25 18:00:50,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996484489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:50,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:50,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:00:50,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202740475] [2021-11-25 18:00:50,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:50,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:00:50,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:50,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:00:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:00:50,171 INFO L87 Difference]: Start difference. First operand 2447 states and 3447 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:55,323 INFO L93 Difference]: Finished difference Result 4375 states and 5968 transitions. [2021-11-25 18:00:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:00:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:00:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:55,331 INFO L225 Difference]: With dead ends: 4375 [2021-11-25 18:00:55,331 INFO L226 Difference]: Without dead ends: 4251 [2021-11-25 18:00:55,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:00:55,333 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 12732 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 6737 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12732 SdHoareTripleChecker+Valid, 5760 SdHoareTripleChecker+Invalid, 7483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 6737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:55,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12732 Valid, 5760 Invalid, 7483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 6737 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 18:00:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-11-25 18:00:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 2505. [2021-11-25 18:00:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2468 states have (on average 1.4323338735818476) internal successors, (3535), 2504 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3535 transitions. [2021-11-25 18:00:55,687 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3535 transitions. Word has length 125 [2021-11-25 18:00:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:55,687 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 3535 transitions. [2021-11-25 18:00:55,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3535 transitions. [2021-11-25 18:00:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:00:55,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:55,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:55,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 18:00:55,692 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:00:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2029048759, now seen corresponding path program 1 times [2021-11-25 18:00:55,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:55,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86902117] [2021-11-25 18:00:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:55,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:55,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:55,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86902117] [2021-11-25 18:00:55,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86902117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:55,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:55,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:00:55,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618930209] [2021-11-25 18:00:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:55,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:00:55,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:00:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:00:55,946 INFO L87 Difference]: Start difference. First operand 2505 states and 3535 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:01,898 INFO L93 Difference]: Finished difference Result 5623 states and 7855 transitions. [2021-11-25 18:01:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:01:01,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:01:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:01,904 INFO L225 Difference]: With dead ends: 5623 [2021-11-25 18:01:01,904 INFO L226 Difference]: Without dead ends: 5031 [2021-11-25 18:01:01,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:01:01,907 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 9998 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 9622 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9998 SdHoareTripleChecker+Valid, 10508 SdHoareTripleChecker+Invalid, 9664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 9622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:01,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9998 Valid, 10508 Invalid, 9664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 9622 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 18:01:01,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2021-11-25 18:01:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 2505. [2021-11-25 18:01:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2468 states have (on average 1.4315235008103728) internal successors, (3533), 2504 states have internal predecessors, (3533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3533 transitions. [2021-11-25 18:01:02,283 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3533 transitions. Word has length 125 [2021-11-25 18:01:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 3533 transitions. [2021-11-25 18:01:02,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3533 transitions. [2021-11-25 18:01:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:01:02,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:02,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:02,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:01:02,291 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -27227939, now seen corresponding path program 1 times [2021-11-25 18:01:02,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267535136] [2021-11-25 18:01:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:02,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:02,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:02,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267535136] [2021-11-25 18:01:02,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267535136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:02,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:02,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:01:02,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907848789] [2021-11-25 18:01:02,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:02,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:01:02,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:02,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:01:02,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:01:02,535 INFO L87 Difference]: Start difference. First operand 2505 states and 3533 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:08,219 INFO L93 Difference]: Finished difference Result 4695 states and 6590 transitions. [2021-11-25 18:01:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:01:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:01:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:08,225 INFO L225 Difference]: With dead ends: 4695 [2021-11-25 18:01:08,225 INFO L226 Difference]: Without dead ends: 4367 [2021-11-25 18:01:08,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:01:08,227 INFO L933 BasicCegarLoop]: 1570 mSDtfsCounter, 11118 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 9226 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11118 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 9294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 9226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:08,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11118 Valid, 9727 Invalid, 9294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 9226 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 18:01:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2021-11-25 18:01:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 2509. [2021-11-25 18:01:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2472 states have (on average 1.4308252427184467) internal successors, (3537), 2508 states have internal predecessors, (3537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3537 transitions. [2021-11-25 18:01:08,634 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3537 transitions. Word has length 125 [2021-11-25 18:01:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:08,634 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 3537 transitions. [2021-11-25 18:01:08,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3537 transitions. [2021-11-25 18:01:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 18:01:08,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:08,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:08,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 18:01:08,639 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1379521681, now seen corresponding path program 1 times [2021-11-25 18:01:08,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:08,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360333091] [2021-11-25 18:01:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:08,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:08,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360333091] [2021-11-25 18:01:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360333091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:08,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:08,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:01:08,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076271681] [2021-11-25 18:01:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:08,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:01:08,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:01:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:01:08,890 INFO L87 Difference]: Start difference. First operand 2509 states and 3537 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:14,426 INFO L93 Difference]: Finished difference Result 4353 states and 6015 transitions. [2021-11-25 18:01:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:01:14,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-25 18:01:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:14,430 INFO L225 Difference]: With dead ends: 4353 [2021-11-25 18:01:14,431 INFO L226 Difference]: Without dead ends: 4215 [2021-11-25 18:01:14,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:01:14,433 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 11605 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 8061 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11605 SdHoareTripleChecker+Valid, 7446 SdHoareTripleChecker+Invalid, 8361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 8061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:14,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11605 Valid, 7446 Invalid, 8361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 8061 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 18:01:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-11-25 18:01:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 2541. [2021-11-25 18:01:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4317092651757188) internal successors, (3585), 2540 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3585 transitions. [2021-11-25 18:01:14,861 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3585 transitions. Word has length 125 [2021-11-25 18:01:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:14,862 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3585 transitions. [2021-11-25 18:01:14,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3585 transitions. [2021-11-25 18:01:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-25 18:01:14,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:14,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:14,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 18:01:14,869 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:14,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash -348949990, now seen corresponding path program 1 times [2021-11-25 18:01:14,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:14,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740140706] [2021-11-25 18:01:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:14,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:15,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:15,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740140706] [2021-11-25 18:01:15,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740140706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:15,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:15,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090218428] [2021-11-25 18:01:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:15,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:15,063 INFO L87 Difference]: Start difference. First operand 2541 states and 3585 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:19,807 INFO L93 Difference]: Finished difference Result 4417 states and 6187 transitions. [2021-11-25 18:01:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:19,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2021-11-25 18:01:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:19,814 INFO L225 Difference]: With dead ends: 4417 [2021-11-25 18:01:19,814 INFO L226 Difference]: Without dead ends: 4103 [2021-11-25 18:01:19,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:19,817 INFO L933 BasicCegarLoop]: 1813 mSDtfsCounter, 7789 mSDsluCounter, 5422 mSDsCounter, 0 mSdLazyCounter, 6666 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7789 SdHoareTripleChecker+Valid, 7227 SdHoareTripleChecker+Invalid, 6698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:19,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7789 Valid, 7227 Invalid, 6698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 6666 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:01:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-11-25 18:01:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 2537. [2021-11-25 18:01:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.432) internal successors, (3580), 2536 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3580 transitions. [2021-11-25 18:01:20,263 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3580 transitions. Word has length 126 [2021-11-25 18:01:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:20,263 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3580 transitions. [2021-11-25 18:01:20,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3580 transitions. [2021-11-25 18:01:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:20,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:20,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:20,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 18:01:20,268 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 472820715, now seen corresponding path program 1 times [2021-11-25 18:01:20,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:20,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122417827] [2021-11-25 18:01:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:20,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:20,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:20,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122417827] [2021-11-25 18:01:20,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122417827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:20,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:20,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:20,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095010353] [2021-11-25 18:01:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:20,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:20,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:20,464 INFO L87 Difference]: Start difference. First operand 2537 states and 3580 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:24,764 INFO L93 Difference]: Finished difference Result 4252 states and 5960 transitions. [2021-11-25 18:01:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:24,768 INFO L225 Difference]: With dead ends: 4252 [2021-11-25 18:01:24,768 INFO L226 Difference]: Without dead ends: 4099 [2021-11-25 18:01:24,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:24,769 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 5809 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 5594 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5809 SdHoareTripleChecker+Valid, 5795 SdHoareTripleChecker+Invalid, 5655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:24,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5809 Valid, 5795 Invalid, 5655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5594 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:01:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2021-11-25 18:01:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 2537. [2021-11-25 18:01:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.4316) internal successors, (3579), 2536 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3579 transitions. [2021-11-25 18:01:25,120 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3579 transitions. Word has length 127 [2021-11-25 18:01:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:25,120 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3579 transitions. [2021-11-25 18:01:25,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3579 transitions. [2021-11-25 18:01:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:25,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:25,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:25,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 18:01:25,125 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:25,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:25,125 INFO L85 PathProgramCache]: Analyzing trace with hash 724068336, now seen corresponding path program 1 times [2021-11-25 18:01:25,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:25,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166531043] [2021-11-25 18:01:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:25,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:25,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:25,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166531043] [2021-11-25 18:01:25,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166531043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:25,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:25,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:25,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021295521] [2021-11-25 18:01:25,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:25,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:25,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:25,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:25,287 INFO L87 Difference]: Start difference. First operand 2537 states and 3579 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:29,410 INFO L93 Difference]: Finished difference Result 4241 states and 5941 transitions. [2021-11-25 18:01:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:01:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:29,414 INFO L225 Difference]: With dead ends: 4241 [2021-11-25 18:01:29,414 INFO L226 Difference]: Without dead ends: 4099 [2021-11-25 18:01:29,415 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 [2021-11-25 18:01:29,415 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 7122 mSDsluCounter, 5848 mSDsCounter, 0 mSdLazyCounter, 6682 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7122 SdHoareTripleChecker+Valid, 7269 SdHoareTripleChecker+Invalid, 6748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 6682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:29,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7122 Valid, 7269 Invalid, 6748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 6682 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:01:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2021-11-25 18:01:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 2537. [2021-11-25 18:01:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.4312) internal successors, (3578), 2536 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3578 transitions. [2021-11-25 18:01:29,769 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3578 transitions. Word has length 127 [2021-11-25 18:01:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:29,769 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3578 transitions. [2021-11-25 18:01:29,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3578 transitions. [2021-11-25 18:01:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:29,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:29,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:29,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 18:01:29,774 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -482683838, now seen corresponding path program 1 times [2021-11-25 18:01:29,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:29,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176445120] [2021-11-25 18:01:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:29,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:29,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:29,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176445120] [2021-11-25 18:01:29,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176445120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:29,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:29,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:29,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806328093] [2021-11-25 18:01:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:29,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:29,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:29,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:29,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:29,932 INFO L87 Difference]: Start difference. First operand 2537 states and 3578 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:33,749 INFO L93 Difference]: Finished difference Result 4378 states and 6150 transitions. [2021-11-25 18:01:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:33,753 INFO L225 Difference]: With dead ends: 4378 [2021-11-25 18:01:33,753 INFO L226 Difference]: Without dead ends: 4171 [2021-11-25 18:01:33,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:33,754 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 5396 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 6525 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5396 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 6558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:33,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5396 Valid, 6925 Invalid, 6558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6525 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:01:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-11-25 18:01:34,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 2537. [2021-11-25 18:01:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.4308) internal successors, (3577), 2536 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3577 transitions. [2021-11-25 18:01:34,103 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3577 transitions. Word has length 127 [2021-11-25 18:01:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:34,103 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3577 transitions. [2021-11-25 18:01:34,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3577 transitions. [2021-11-25 18:01:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:34,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:34,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 18:01:34,106 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1213342178, now seen corresponding path program 1 times [2021-11-25 18:01:34,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:34,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405617964] [2021-11-25 18:01:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:34,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:34,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:34,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405617964] [2021-11-25 18:01:34,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405617964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:34,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:34,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:34,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884692741] [2021-11-25 18:01:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:34,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:34,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:34,282 INFO L87 Difference]: Start difference. First operand 2537 states and 3577 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:37,889 INFO L93 Difference]: Finished difference Result 4107 states and 5695 transitions. [2021-11-25 18:01:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:37,892 INFO L225 Difference]: With dead ends: 4107 [2021-11-25 18:01:37,892 INFO L226 Difference]: Without dead ends: 3983 [2021-11-25 18:01:37,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:37,894 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 6069 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 5009 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6069 SdHoareTripleChecker+Valid, 4985 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 5009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:37,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6069 Valid, 4985 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 5009 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:01:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-11-25 18:01:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 2537. [2021-11-25 18:01:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.4304) internal successors, (3576), 2536 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3576 transitions. [2021-11-25 18:01:38,250 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3576 transitions. Word has length 127 [2021-11-25 18:01:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:38,251 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3576 transitions. [2021-11-25 18:01:38,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3576 transitions. [2021-11-25 18:01:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:38,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:38,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:38,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 18:01:38,253 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 540667793, now seen corresponding path program 1 times [2021-11-25 18:01:38,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393881088] [2021-11-25 18:01:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:38,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:38,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:38,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393881088] [2021-11-25 18:01:38,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393881088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:38,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:38,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:01:38,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835783056] [2021-11-25 18:01:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:38,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:01:38,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:01:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:01:38,506 INFO L87 Difference]: Start difference. First operand 2537 states and 3576 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:44,795 INFO L93 Difference]: Finished difference Result 5018 states and 6984 transitions. [2021-11-25 18:01:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:01:44,795 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:44,802 INFO L225 Difference]: With dead ends: 5018 [2021-11-25 18:01:44,802 INFO L226 Difference]: Without dead ends: 4857 [2021-11-25 18:01:44,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:01:44,805 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 14357 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 6849 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14357 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 8136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 6849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:44,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14357 Valid, 6907 Invalid, 8136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1287 Valid, 6849 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 18:01:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-11-25 18:01:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 2541. [2021-11-25 18:01:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4297124600638977) internal successors, (3580), 2540 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3580 transitions. [2021-11-25 18:01:45,241 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3580 transitions. Word has length 127 [2021-11-25 18:01:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:45,241 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3580 transitions. [2021-11-25 18:01:45,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3580 transitions. [2021-11-25 18:01:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:45,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:45,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:45,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 18:01:45,244 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1201649910, now seen corresponding path program 1 times [2021-11-25 18:01:45,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:45,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924507867] [2021-11-25 18:01:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:45,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:45,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924507867] [2021-11-25 18:01:45,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924507867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:45,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:45,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:45,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543489117] [2021-11-25 18:01:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:45,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:45,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:45,402 INFO L87 Difference]: Start difference. First operand 2541 states and 3580 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:49,205 INFO L93 Difference]: Finished difference Result 4111 states and 5697 transitions. [2021-11-25 18:01:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:49,209 INFO L225 Difference]: With dead ends: 4111 [2021-11-25 18:01:49,209 INFO L226 Difference]: Without dead ends: 3987 [2021-11-25 18:01:49,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:49,211 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 9176 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9176 SdHoareTripleChecker+Valid, 4989 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:49,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9176 Valid, 4989 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:01:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-25 18:01:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2541. [2021-11-25 18:01:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4293130990415335) internal successors, (3579), 2540 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3579 transitions. [2021-11-25 18:01:49,599 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3579 transitions. Word has length 127 [2021-11-25 18:01:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:49,600 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3579 transitions. [2021-11-25 18:01:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3579 transitions. [2021-11-25 18:01:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:49,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:49,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:49,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 18:01:49,603 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1807857710, now seen corresponding path program 1 times [2021-11-25 18:01:49,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165864816] [2021-11-25 18:01:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:49,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:49,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165864816] [2021-11-25 18:01:49,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165864816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:49,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:49,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792259615] [2021-11-25 18:01:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:49,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:49,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:49,774 INFO L87 Difference]: Start difference. First operand 2541 states and 3579 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:53,630 INFO L93 Difference]: Finished difference Result 4405 states and 6173 transitions. [2021-11-25 18:01:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:53,635 INFO L225 Difference]: With dead ends: 4405 [2021-11-25 18:01:53,635 INFO L226 Difference]: Without dead ends: 4175 [2021-11-25 18:01:53,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:53,637 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 8099 mSDsluCounter, 5227 mSDsCounter, 0 mSdLazyCounter, 6492 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8099 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 6541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 6492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:53,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8099 Valid, 6888 Invalid, 6541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 6492 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 18:01:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2021-11-25 18:01:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 2541. [2021-11-25 18:01:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4289137380191694) internal successors, (3578), 2540 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3578 transitions. [2021-11-25 18:01:54,058 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3578 transitions. Word has length 127 [2021-11-25 18:01:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:54,058 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3578 transitions. [2021-11-25 18:01:54,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3578 transitions. [2021-11-25 18:01:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:54,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:54,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:54,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 18:01:54,061 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:54,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1080359966, now seen corresponding path program 1 times [2021-11-25 18:01:54,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:54,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802913378] [2021-11-25 18:01:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:54,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:54,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802913378] [2021-11-25 18:01:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802913378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:54,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:54,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:54,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963805345] [2021-11-25 18:01:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:54,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:54,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:54,198 INFO L87 Difference]: Start difference. First operand 2541 states and 3578 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:57,711 INFO L93 Difference]: Finished difference Result 4115 states and 5698 transitions. [2021-11-25 18:01:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:01:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:01:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:57,715 INFO L225 Difference]: With dead ends: 4115 [2021-11-25 18:01:57,715 INFO L226 Difference]: Without dead ends: 3987 [2021-11-25 18:01:57,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:01:57,717 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 9192 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9192 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 5359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:57,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9192 Valid, 4980 Invalid, 5359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 4995 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:01:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-25 18:01:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2541. [2021-11-25 18:01:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4285143769968052) internal successors, (3577), 2540 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3577 transitions. [2021-11-25 18:01:58,146 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3577 transitions. Word has length 127 [2021-11-25 18:01:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:58,146 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3577 transitions. [2021-11-25 18:01:58,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:01:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3577 transitions. [2021-11-25 18:01:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:01:58,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:58,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:58,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 18:01:58,149 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:01:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1266444647, now seen corresponding path program 1 times [2021-11-25 18:01:58,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:58,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841383902] [2021-11-25 18:01:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:58,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:58,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:58,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841383902] [2021-11-25 18:01:58,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841383902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:58,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:58,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:01:58,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802864655] [2021-11-25 18:01:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:01:58,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:01:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:58,300 INFO L87 Difference]: Start difference. First operand 2541 states and 3577 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:02,070 INFO L93 Difference]: Finished difference Result 4467 states and 6271 transitions. [2021-11-25 18:02:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:02:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:02,075 INFO L225 Difference]: With dead ends: 4467 [2021-11-25 18:02:02,076 INFO L226 Difference]: Without dead ends: 4175 [2021-11-25 18:02:02,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:02:02,078 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 5473 mSDsluCounter, 5320 mSDsCounter, 0 mSdLazyCounter, 6434 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 6937 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 6434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:02,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5473 Valid, 6937 Invalid, 6470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 6434 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:02:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2021-11-25 18:02:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 2541. [2021-11-25 18:02:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4277156549520766) internal successors, (3575), 2540 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3575 transitions. [2021-11-25 18:02:02,532 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3575 transitions. Word has length 127 [2021-11-25 18:02:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:02,532 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3575 transitions. [2021-11-25 18:02:02,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3575 transitions. [2021-11-25 18:02:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:02,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:02,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:02,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 18:02:02,535 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash 429581369, now seen corresponding path program 1 times [2021-11-25 18:02:02,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:02,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945760858] [2021-11-25 18:02:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:02,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:02,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:02,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945760858] [2021-11-25 18:02:02,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945760858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:02,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:02,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:02:02,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820582431] [2021-11-25 18:02:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:02,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:02:02,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:02:02,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:02:02,670 INFO L87 Difference]: Start difference. First operand 2541 states and 3575 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:06,215 INFO L93 Difference]: Finished difference Result 4119 states and 5701 transitions. [2021-11-25 18:02:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:02:06,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:06,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:06,219 INFO L225 Difference]: With dead ends: 4119 [2021-11-25 18:02:06,219 INFO L226 Difference]: Without dead ends: 3987 [2021-11-25 18:02:06,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:02:06,223 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 9173 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 4985 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9173 SdHoareTripleChecker+Valid, 4985 SdHoareTripleChecker+Invalid, 5349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 4985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:06,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9173 Valid, 4985 Invalid, 5349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 4985 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:02:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-25 18:02:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2541. [2021-11-25 18:02:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2504 states have (on average 1.4269169329073483) internal successors, (3573), 2540 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3573 transitions. [2021-11-25 18:02:06,707 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3573 transitions. Word has length 127 [2021-11-25 18:02:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:06,707 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3573 transitions. [2021-11-25 18:02:06,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3573 transitions. [2021-11-25 18:02:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:06,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:06,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:06,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 18:02:06,710 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash -263750242, now seen corresponding path program 1 times [2021-11-25 18:02:06,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649978404] [2021-11-25 18:02:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:06,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:06,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:06,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649978404] [2021-11-25 18:02:06,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649978404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:06,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:06,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:02:06,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604564228] [2021-11-25 18:02:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:06,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:02:06,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:02:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:02:06,966 INFO L87 Difference]: Start difference. First operand 2541 states and 3573 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:14,037 INFO L93 Difference]: Finished difference Result 5467 states and 7614 transitions. [2021-11-25 18:02:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:02:14,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:14,042 INFO L225 Difference]: With dead ends: 5467 [2021-11-25 18:02:14,042 INFO L226 Difference]: Without dead ends: 5151 [2021-11-25 18:02:14,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:02:14,044 INFO L933 BasicCegarLoop]: 1808 mSDtfsCounter, 13439 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 8208 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13439 SdHoareTripleChecker+Valid, 8430 SdHoareTripleChecker+Invalid, 9319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 8208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:14,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13439 Valid, 8430 Invalid, 9319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 8208 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 18:02:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2021-11-25 18:02:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 2549. [2021-11-25 18:02:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2512 states have (on average 1.4255573248407643) internal successors, (3581), 2548 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3581 transitions. [2021-11-25 18:02:14,534 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3581 transitions. Word has length 127 [2021-11-25 18:02:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:14,535 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3581 transitions. [2021-11-25 18:02:14,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3581 transitions. [2021-11-25 18:02:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:14,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:14,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:14,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 18:02:14,537 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1854077880, now seen corresponding path program 1 times [2021-11-25 18:02:14,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:14,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37053179] [2021-11-25 18:02:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:14,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:14,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37053179] [2021-11-25 18:02:14,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37053179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:14,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:02:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472216292] [2021-11-25 18:02:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:14,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:02:14,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:02:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:02:14,711 INFO L87 Difference]: Start difference. First operand 2549 states and 3581 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:19,234 INFO L93 Difference]: Finished difference Result 4315 states and 6033 transitions. [2021-11-25 18:02:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:02:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:19,239 INFO L225 Difference]: With dead ends: 4315 [2021-11-25 18:02:19,239 INFO L226 Difference]: Without dead ends: 4107 [2021-11-25 18:02:19,240 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 [2021-11-25 18:02:19,240 INFO L933 BasicCegarLoop]: 1790 mSDtfsCounter, 7094 mSDsluCounter, 6386 mSDsCounter, 0 mSdLazyCounter, 7156 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7094 SdHoareTripleChecker+Valid, 8165 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 7156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:19,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7094 Valid, 8165 Invalid, 7222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 7156 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:02:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-25 18:02:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2549. [2021-11-25 18:02:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2512 states have (on average 1.4247611464968153) internal successors, (3579), 2548 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3579 transitions. [2021-11-25 18:02:19,762 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3579 transitions. Word has length 127 [2021-11-25 18:02:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3579 transitions. [2021-11-25 18:02:19,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3579 transitions. [2021-11-25 18:02:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:19,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:19,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:19,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 18:02:19,764 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 554394115, now seen corresponding path program 1 times [2021-11-25 18:02:19,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:19,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380997167] [2021-11-25 18:02:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:19,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:19,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:19,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380997167] [2021-11-25 18:02:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380997167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:19,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:19,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:02:19,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365065432] [2021-11-25 18:02:19,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:19,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:02:19,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:02:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:02:19,984 INFO L87 Difference]: Start difference. First operand 2549 states and 3579 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:26,809 INFO L93 Difference]: Finished difference Result 5851 states and 8123 transitions. [2021-11-25 18:02:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:02:26,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:26,814 INFO L225 Difference]: With dead ends: 5851 [2021-11-25 18:02:26,814 INFO L226 Difference]: Without dead ends: 5259 [2021-11-25 18:02:26,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:02:26,817 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 16724 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 7116 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16724 SdHoareTripleChecker+Valid, 7489 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 7116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:26,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16724 Valid, 7489 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1251 Valid, 7116 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 18:02:26,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2021-11-25 18:02:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 2557. [2021-11-25 18:02:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2520 states have (on average 1.4234126984126985) internal successors, (3587), 2556 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3587 transitions. [2021-11-25 18:02:27,330 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3587 transitions. Word has length 127 [2021-11-25 18:02:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:27,330 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3587 transitions. [2021-11-25 18:02:27,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3587 transitions. [2021-11-25 18:02:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:27,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:27,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:27,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 18:02:27,333 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1495194675, now seen corresponding path program 1 times [2021-11-25 18:02:27,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:27,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529850282] [2021-11-25 18:02:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:27,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:27,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:27,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529850282] [2021-11-25 18:02:27,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529850282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:27,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:27,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:02:27,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408763624] [2021-11-25 18:02:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:27,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:02:27,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:02:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:02:27,502 INFO L87 Difference]: Start difference. First operand 2557 states and 3587 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:32,219 INFO L93 Difference]: Finished difference Result 4511 states and 6311 transitions. [2021-11-25 18:02:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:02:32,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:32,224 INFO L225 Difference]: With dead ends: 4511 [2021-11-25 18:02:32,224 INFO L226 Difference]: Without dead ends: 4183 [2021-11-25 18:02:32,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:02:32,226 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 5279 mSDsluCounter, 5657 mSDsCounter, 0 mSdLazyCounter, 6726 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 7393 SdHoareTripleChecker+Invalid, 6759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:32,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5279 Valid, 7393 Invalid, 6759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6726 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:02:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-11-25 18:02:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 2557. [2021-11-25 18:02:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2520 states have (on average 1.4226190476190477) internal successors, (3585), 2556 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3585 transitions. [2021-11-25 18:02:32,780 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3585 transitions. Word has length 127 [2021-11-25 18:02:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:32,780 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3585 transitions. [2021-11-25 18:02:32,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3585 transitions. [2021-11-25 18:02:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:32,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:32,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:32,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 18:02:32,783 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:32,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1393023001, now seen corresponding path program 1 times [2021-11-25 18:02:32,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:32,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918184874] [2021-11-25 18:02:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:32,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:32,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:32,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918184874] [2021-11-25 18:02:32,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918184874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:32,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:32,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:02:32,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834288426] [2021-11-25 18:02:32,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:32,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:02:32,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:02:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:02:32,961 INFO L87 Difference]: Start difference. First operand 2557 states and 3585 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:37,921 INFO L93 Difference]: Finished difference Result 4337 states and 6053 transitions. [2021-11-25 18:02:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:02:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:37,926 INFO L225 Difference]: With dead ends: 4337 [2021-11-25 18:02:37,926 INFO L226 Difference]: Without dead ends: 4115 [2021-11-25 18:02:37,928 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 [2021-11-25 18:02:37,928 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 7245 mSDsluCounter, 6641 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7245 SdHoareTripleChecker+Valid, 8576 SdHoareTripleChecker+Invalid, 7392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:37,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7245 Valid, 8576 Invalid, 7392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:02:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-25 18:02:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 2557. [2021-11-25 18:02:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2520 states have (on average 1.421031746031746) internal successors, (3581), 2556 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3581 transitions. [2021-11-25 18:02:38,515 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3581 transitions. Word has length 127 [2021-11-25 18:02:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:38,516 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3581 transitions. [2021-11-25 18:02:38,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3581 transitions. [2021-11-25 18:02:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:38,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:38,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:38,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 18:02:38,519 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1318088377, now seen corresponding path program 1 times [2021-11-25 18:02:38,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:38,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175842422] [2021-11-25 18:02:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:38,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:38,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:38,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175842422] [2021-11-25 18:02:38,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175842422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:38,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:38,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:02:38,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894286146] [2021-11-25 18:02:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:38,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:02:38,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:02:38,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:02:38,723 INFO L87 Difference]: Start difference. First operand 2557 states and 3581 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:44,463 INFO L93 Difference]: Finished difference Result 4395 states and 5962 transitions. [2021-11-25 18:02:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:02:44,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:44,469 INFO L225 Difference]: With dead ends: 4395 [2021-11-25 18:02:44,469 INFO L226 Difference]: Without dead ends: 4271 [2021-11-25 18:02:44,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:02:44,470 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 8862 mSDsluCounter, 5893 mSDsCounter, 0 mSdLazyCounter, 8175 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8862 SdHoareTripleChecker+Valid, 7029 SdHoareTripleChecker+Invalid, 8655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 8175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:44,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8862 Valid, 7029 Invalid, 8655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 8175 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:02:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2021-11-25 18:02:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 2597. [2021-11-25 18:02:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2560 states have (on average 1.421484375) internal successors, (3639), 2596 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3639 transitions. [2021-11-25 18:02:45,064 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3639 transitions. Word has length 127 [2021-11-25 18:02:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:45,064 INFO L470 AbstractCegarLoop]: Abstraction has 2597 states and 3639 transitions. [2021-11-25 18:02:45,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3639 transitions. [2021-11-25 18:02:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:45,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:45,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:45,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 18:02:45,067 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash 20198339, now seen corresponding path program 1 times [2021-11-25 18:02:45,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:45,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378836052] [2021-11-25 18:02:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:45,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:45,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:45,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378836052] [2021-11-25 18:02:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378836052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:45,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:02:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647699763] [2021-11-25 18:02:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:02:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:02:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:02:45,276 INFO L87 Difference]: Start difference. First operand 2597 states and 3639 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:50,236 INFO L93 Difference]: Finished difference Result 4377 states and 6017 transitions. [2021-11-25 18:02:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:02:50,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:50,241 INFO L225 Difference]: With dead ends: 4377 [2021-11-25 18:02:50,241 INFO L226 Difference]: Without dead ends: 4239 [2021-11-25 18:02:50,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:02:50,244 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 6671 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6671 SdHoareTripleChecker+Valid, 6865 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6671 Valid, 6865 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 6995 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 18:02:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-25 18:02:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 2613. [2021-11-25 18:02:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2576 states have (on average 1.421195652173913) internal successors, (3661), 2612 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3661 transitions. [2021-11-25 18:02:50,822 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3661 transitions. Word has length 127 [2021-11-25 18:02:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:50,822 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 3661 transitions. [2021-11-25 18:02:50,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3661 transitions. [2021-11-25 18:02:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:02:50,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:50,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:50,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 18:02:50,826 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 429043567, now seen corresponding path program 1 times [2021-11-25 18:02:50,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871286052] [2021-11-25 18:02:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:50,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:51,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871286052] [2021-11-25 18:02:51,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871286052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:51,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:51,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:02:51,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019963231] [2021-11-25 18:02:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:51,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:02:51,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:02:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:02:51,053 INFO L87 Difference]: Start difference. First operand 2613 states and 3661 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:55,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:55,716 INFO L93 Difference]: Finished difference Result 3653 states and 5079 transitions. [2021-11-25 18:02:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:02:55,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-25 18:02:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:55,719 INFO L225 Difference]: With dead ends: 3653 [2021-11-25 18:02:55,719 INFO L226 Difference]: Without dead ends: 2673 [2021-11-25 18:02:55,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:02:55,721 INFO L933 BasicCegarLoop]: 1279 mSDtfsCounter, 7167 mSDsluCounter, 6157 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7167 SdHoareTripleChecker+Valid, 7426 SdHoareTripleChecker+Invalid, 7205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:55,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7167 Valid, 7426 Invalid, 7205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 18:02:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2021-11-25 18:02:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2463. [2021-11-25 18:02:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2426 states have (on average 1.4192085737840066) internal successors, (3443), 2462 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3443 transitions. [2021-11-25 18:02:56,283 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3443 transitions. Word has length 127 [2021-11-25 18:02:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:56,283 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3443 transitions. [2021-11-25 18:02:56,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3443 transitions. [2021-11-25 18:02:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 18:02:56,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:56,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:56,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 18:02:56,288 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1656553185, now seen corresponding path program 1 times [2021-11-25 18:02:56,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932595032] [2021-11-25 18:02:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:56,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:56,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:56,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932595032] [2021-11-25 18:02:56,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932595032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:56,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:56,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:02:56,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245463261] [2021-11-25 18:02:56,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:56,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:02:56,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:02:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:02:56,821 INFO L87 Difference]: Start difference. First operand 2463 states and 3443 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:59,351 INFO L93 Difference]: Finished difference Result 3163 states and 4396 transitions. [2021-11-25 18:02:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:02:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-25 18:02:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:59,355 INFO L225 Difference]: With dead ends: 3163 [2021-11-25 18:02:59,355 INFO L226 Difference]: Without dead ends: 2760 [2021-11-25 18:02:59,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:02:59,357 INFO L933 BasicCegarLoop]: 2390 mSDtfsCounter, 6886 mSDsluCounter, 10529 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6886 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:59,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6886 Valid, 12679 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:02:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-25 18:02:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2176. [2021-11-25 18:02:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2140 states have (on average 1.4135514018691588) internal successors, (3025), 2175 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3025 transitions. [2021-11-25 18:02:59,876 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3025 transitions. Word has length 128 [2021-11-25 18:02:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:59,877 INFO L470 AbstractCegarLoop]: Abstraction has 2176 states and 3025 transitions. [2021-11-25 18:02:59,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:02:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3025 transitions. [2021-11-25 18:02:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 18:02:59,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:59,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:59,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 18:02:59,879 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:02:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash -392170728, now seen corresponding path program 1 times [2021-11-25 18:02:59,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294645658] [2021-11-25 18:02:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:59,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:00,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:00,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294645658] [2021-11-25 18:03:00,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294645658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:00,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:00,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:00,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712113814] [2021-11-25 18:03:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:00,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:00,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:00,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:00,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:00,047 INFO L87 Difference]: Start difference. First operand 2176 states and 3025 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:04,151 INFO L93 Difference]: Finished difference Result 3734 states and 5174 transitions. [2021-11-25 18:03:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:04,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-25 18:03:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:04,155 INFO L225 Difference]: With dead ends: 3734 [2021-11-25 18:03:04,155 INFO L226 Difference]: Without dead ends: 3573 [2021-11-25 18:03:04,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:04,156 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 4392 mSDsluCounter, 4274 mSDsCounter, 0 mSdLazyCounter, 5156 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 5609 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:04,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4392 Valid, 5609 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5156 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:03:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2021-11-25 18:03:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 2172. [2021-11-25 18:03:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.4138576779026217) internal successors, (3020), 2171 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3020 transitions. [2021-11-25 18:03:04,679 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3020 transitions. Word has length 128 [2021-11-25 18:03:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:04,679 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 3020 transitions. [2021-11-25 18:03:04,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3020 transitions. [2021-11-25 18:03:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 18:03:04,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:04,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:04,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-25 18:03:04,682 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1783508779, now seen corresponding path program 1 times [2021-11-25 18:03:04,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:04,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798466122] [2021-11-25 18:03:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:04,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:04,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:04,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798466122] [2021-11-25 18:03:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798466122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:04,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:04,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:04,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265997240] [2021-11-25 18:03:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:04,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:04,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:04,848 INFO L87 Difference]: Start difference. First operand 2172 states and 3020 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:08,795 INFO L93 Difference]: Finished difference Result 3901 states and 5414 transitions. [2021-11-25 18:03:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:08,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-25 18:03:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:08,799 INFO L225 Difference]: With dead ends: 3901 [2021-11-25 18:03:08,799 INFO L226 Difference]: Without dead ends: 3585 [2021-11-25 18:03:08,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:08,800 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 4508 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:08,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4508 Valid, 5513 Invalid, 5096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:03:08,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-11-25 18:03:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 2164. [2021-11-25 18:03:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.4144736842105263) internal successors, (3010), 2163 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3010 transitions. [2021-11-25 18:03:09,294 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3010 transitions. Word has length 128 [2021-11-25 18:03:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:09,294 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 3010 transitions. [2021-11-25 18:03:09,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3010 transitions. [2021-11-25 18:03:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 18:03:09,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:09,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:09,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 18:03:09,297 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1711385633, now seen corresponding path program 1 times [2021-11-25 18:03:09,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:09,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593940463] [2021-11-25 18:03:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:09,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:09,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:09,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593940463] [2021-11-25 18:03:09,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593940463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:09,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:09,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:09,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148014234] [2021-11-25 18:03:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:09,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:09,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:09,460 INFO L87 Difference]: Start difference. First operand 2164 states and 3010 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:13,993 INFO L93 Difference]: Finished difference Result 4314 states and 5984 transitions. [2021-11-25 18:03:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-25 18:03:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:13,998 INFO L225 Difference]: With dead ends: 4314 [2021-11-25 18:03:13,998 INFO L226 Difference]: Without dead ends: 3722 [2021-11-25 18:03:13,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:14,000 INFO L933 BasicCegarLoop]: 1681 mSDtfsCounter, 4440 mSDsluCounter, 4829 mSDsCounter, 0 mSdLazyCounter, 5955 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:14,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4440 Valid, 6498 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5955 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:03:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2021-11-25 18:03:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 2156. [2021-11-25 18:03:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4150943396226414) internal successors, (3000), 2155 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3000 transitions. [2021-11-25 18:03:14,552 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3000 transitions. Word has length 128 [2021-11-25 18:03:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:14,552 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3000 transitions. [2021-11-25 18:03:14,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3000 transitions. [2021-11-25 18:03:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:14,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:14,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:14,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 18:03:14,557 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash -423058819, now seen corresponding path program 1 times [2021-11-25 18:03:14,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:14,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680184674] [2021-11-25 18:03:14,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:14,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:14,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:14,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680184674] [2021-11-25 18:03:14,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680184674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:14,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:14,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:14,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97355442] [2021-11-25 18:03:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:14,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:14,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:14,749 INFO L87 Difference]: Start difference. First operand 2156 states and 3000 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:18,776 INFO L93 Difference]: Finished difference Result 3648 states and 5040 transitions. [2021-11-25 18:03:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:18,780 INFO L225 Difference]: With dead ends: 3648 [2021-11-25 18:03:18,781 INFO L226 Difference]: Without dead ends: 3517 [2021-11-25 18:03:18,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:03:18,783 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 7099 mSDsluCounter, 3723 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7099 SdHoareTripleChecker+Valid, 4843 SdHoareTripleChecker+Invalid, 4701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:18,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7099 Valid, 4843 Invalid, 4701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:03:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-25 18:03:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2156. [2021-11-25 18:03:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.414622641509434) internal successors, (2999), 2155 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2999 transitions. [2021-11-25 18:03:19,326 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2999 transitions. Word has length 129 [2021-11-25 18:03:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:19,326 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2999 transitions. [2021-11-25 18:03:19,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2999 transitions. [2021-11-25 18:03:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:19,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:19,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:19,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 18:03:19,329 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2036895990, now seen corresponding path program 1 times [2021-11-25 18:03:19,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:19,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437748819] [2021-11-25 18:03:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:19,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:19,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437748819] [2021-11-25 18:03:19,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437748819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:19,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:19,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:19,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281994481] [2021-11-25 18:03:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:19,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:19,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:19,506 INFO L87 Difference]: Start difference. First operand 2156 states and 2999 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:23,210 INFO L93 Difference]: Finished difference Result 3412 states and 4623 transitions. [2021-11-25 18:03:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:23,215 INFO L225 Difference]: With dead ends: 3412 [2021-11-25 18:03:23,215 INFO L226 Difference]: Without dead ends: 3291 [2021-11-25 18:03:23,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:23,216 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 7177 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 3986 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7177 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 4517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:23,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7177 Valid, 3850 Invalid, 4517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3986 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:03:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-11-25 18:03:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2156. [2021-11-25 18:03:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4141509433962265) internal successors, (2998), 2155 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2998 transitions. [2021-11-25 18:03:23,815 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2998 transitions. Word has length 129 [2021-11-25 18:03:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:23,815 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2998 transitions. [2021-11-25 18:03:23,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2998 transitions. [2021-11-25 18:03:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:23,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:23,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:23,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 18:03:23,818 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash -306174041, now seen corresponding path program 1 times [2021-11-25 18:03:23,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:23,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362554155] [2021-11-25 18:03:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:23,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:23,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362554155] [2021-11-25 18:03:23,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362554155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:23,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:23,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:23,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809394734] [2021-11-25 18:03:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:23,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:23,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:23,985 INFO L87 Difference]: Start difference. First operand 2156 states and 2998 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:27,862 INFO L93 Difference]: Finished difference Result 3555 states and 4876 transitions. [2021-11-25 18:03:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:27,867 INFO L225 Difference]: With dead ends: 3555 [2021-11-25 18:03:27,868 INFO L226 Difference]: Without dead ends: 3437 [2021-11-25 18:03:27,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:27,870 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 4876 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 4058 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 4234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 4058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:27,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4876 Valid, 4216 Invalid, 4234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 4058 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:03:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2021-11-25 18:03:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 2156. [2021-11-25 18:03:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.413679245283019) internal successors, (2997), 2155 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2997 transitions. [2021-11-25 18:03:28,478 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2997 transitions. Word has length 129 [2021-11-25 18:03:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:28,478 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2997 transitions. [2021-11-25 18:03:28,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2997 transitions. [2021-11-25 18:03:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:28,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:28,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:28,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 18:03:28,481 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2033769873, now seen corresponding path program 1 times [2021-11-25 18:03:28,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945030407] [2021-11-25 18:03:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:28,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:28,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:28,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945030407] [2021-11-25 18:03:28,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945030407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:28,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:28,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:28,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345594082] [2021-11-25 18:03:28,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:28,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:28,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:28,665 INFO L87 Difference]: Start difference. First operand 2156 states and 2997 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:33,211 INFO L93 Difference]: Finished difference Result 3702 states and 5125 transitions. [2021-11-25 18:03:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:03:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:33,215 INFO L225 Difference]: With dead ends: 3702 [2021-11-25 18:03:33,215 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:03:33,216 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 [2021-11-25 18:03:33,216 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 5779 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 6138 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5779 SdHoareTripleChecker+Valid, 7494 SdHoareTripleChecker+Invalid, 6189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 6138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:33,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5779 Valid, 7494 Invalid, 6189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 6138 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:03:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:03:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2156. [2021-11-25 18:03:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4132075471698113) internal successors, (2996), 2155 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2996 transitions. [2021-11-25 18:03:33,804 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2996 transitions. Word has length 129 [2021-11-25 18:03:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:33,804 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2996 transitions. [2021-11-25 18:03:33,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2996 transitions. [2021-11-25 18:03:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:33,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:33,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:33,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 18:03:33,807 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:33,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -396079830, now seen corresponding path program 1 times [2021-11-25 18:03:33,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412816802] [2021-11-25 18:03:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:33,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:33,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:33,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412816802] [2021-11-25 18:03:33,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412816802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:33,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:33,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:33,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696264657] [2021-11-25 18:03:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:33,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:33,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:33,978 INFO L87 Difference]: Start difference. First operand 2156 states and 2996 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:37,819 INFO L93 Difference]: Finished difference Result 3565 states and 4886 transitions. [2021-11-25 18:03:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:37,822 INFO L225 Difference]: With dead ends: 3565 [2021-11-25 18:03:37,823 INFO L226 Difference]: Without dead ends: 3437 [2021-11-25 18:03:37,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:37,824 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 7426 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 4043 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7426 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 4317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 4043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:37,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7426 Valid, 4201 Invalid, 4317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 4043 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:03:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2021-11-25 18:03:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 2156. [2021-11-25 18:03:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4127358490566038) internal successors, (2995), 2155 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2995 transitions. [2021-11-25 18:03:38,387 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2995 transitions. Word has length 129 [2021-11-25 18:03:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:38,387 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2995 transitions. [2021-11-25 18:03:38,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2995 transitions. [2021-11-25 18:03:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:38,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:38,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:38,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 18:03:38,390 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1285124640, now seen corresponding path program 1 times [2021-11-25 18:03:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064024131] [2021-11-25 18:03:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:38,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:38,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:38,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064024131] [2021-11-25 18:03:38,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064024131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:38,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:38,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:38,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420726312] [2021-11-25 18:03:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:38,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:38,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:38,567 INFO L87 Difference]: Start difference. First operand 2156 states and 2995 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:43,085 INFO L93 Difference]: Finished difference Result 3737 states and 5166 transitions. [2021-11-25 18:03:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:43,090 INFO L225 Difference]: With dead ends: 3737 [2021-11-25 18:03:43,090 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:03:43,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:43,092 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 4212 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 5401 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 5445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:43,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4212 Valid, 5907 Invalid, 5445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5401 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:03:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:03:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2156. [2021-11-25 18:03:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4122641509433962) internal successors, (2994), 2155 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2994 transitions. [2021-11-25 18:03:43,645 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2994 transitions. Word has length 129 [2021-11-25 18:03:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:43,646 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2994 transitions. [2021-11-25 18:03:43,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2994 transitions. [2021-11-25 18:03:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:43,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:43,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:43,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 18:03:43,649 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash 842788201, now seen corresponding path program 1 times [2021-11-25 18:03:43,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:43,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215641328] [2021-11-25 18:03:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:43,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:43,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:43,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215641328] [2021-11-25 18:03:43,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215641328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:43,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:43,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:43,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892268354] [2021-11-25 18:03:43,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:43,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:43,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:43,813 INFO L87 Difference]: Start difference. First operand 2156 states and 2994 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:48,123 INFO L93 Difference]: Finished difference Result 3648 states and 5033 transitions. [2021-11-25 18:03:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:48,127 INFO L225 Difference]: With dead ends: 3648 [2021-11-25 18:03:48,128 INFO L226 Difference]: Without dead ends: 3517 [2021-11-25 18:03:48,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:03:48,129 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 6912 mSDsluCounter, 3881 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6912 SdHoareTripleChecker+Valid, 5053 SdHoareTripleChecker+Invalid, 4794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:48,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6912 Valid, 5053 Invalid, 4794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 4660 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:03:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-25 18:03:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2156. [2021-11-25 18:03:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4117924528301886) internal successors, (2993), 2155 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2993 transitions. [2021-11-25 18:03:48,735 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2993 transitions. Word has length 129 [2021-11-25 18:03:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:48,735 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2993 transitions. [2021-11-25 18:03:48,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2993 transitions. [2021-11-25 18:03:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:48,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:48,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:48,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-25 18:03:48,738 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:48,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 134646693, now seen corresponding path program 1 times [2021-11-25 18:03:48,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72717286] [2021-11-25 18:03:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:48,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:48,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:48,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72717286] [2021-11-25 18:03:48,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72717286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:48,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:48,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:48,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787576875] [2021-11-25 18:03:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:48,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:48,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:48,910 INFO L87 Difference]: Start difference. First operand 2156 states and 2993 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:53,545 INFO L93 Difference]: Finished difference Result 3718 states and 5141 transitions. [2021-11-25 18:03:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:03:53,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:53,550 INFO L225 Difference]: With dead ends: 3718 [2021-11-25 18:03:53,551 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:03:53,552 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 [2021-11-25 18:03:53,553 INFO L933 BasicCegarLoop]: 1762 mSDtfsCounter, 5763 mSDsluCounter, 5755 mSDsCounter, 0 mSdLazyCounter, 6131 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5763 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 6182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 6131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:53,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5763 Valid, 7506 Invalid, 6182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 6131 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:03:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:03:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2156. [2021-11-25 18:03:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.411320754716981) internal successors, (2992), 2155 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2992 transitions. [2021-11-25 18:03:54,123 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2992 transitions. Word has length 129 [2021-11-25 18:03:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:54,123 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2992 transitions. [2021-11-25 18:03:54,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2992 transitions. [2021-11-25 18:03:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:54,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:54,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:54,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-25 18:03:54,126 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:54,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1643177252, now seen corresponding path program 1 times [2021-11-25 18:03:54,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:54,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807541815] [2021-11-25 18:03:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:54,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:54,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:54,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807541815] [2021-11-25 18:03:54,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807541815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:54,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:54,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:54,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433318369] [2021-11-25 18:03:54,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:54,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:54,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:54,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:54,298 INFO L87 Difference]: Start difference. First operand 2156 states and 2992 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:58,579 INFO L93 Difference]: Finished difference Result 3765 states and 5209 transitions. [2021-11-25 18:03:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:03:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:03:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:58,583 INFO L225 Difference]: With dead ends: 3765 [2021-11-25 18:03:58,583 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:03:58,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:03:58,585 INFO L933 BasicCegarLoop]: 1418 mSDtfsCounter, 4255 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 5892 SdHoareTripleChecker+Invalid, 5345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:58,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4255 Valid, 5892 Invalid, 5345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5300 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:03:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:03:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2156. [2021-11-25 18:03:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4103773584905661) internal successors, (2990), 2155 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2990 transitions. [2021-11-25 18:03:59,205 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2990 transitions. Word has length 129 [2021-11-25 18:03:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:59,205 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2990 transitions. [2021-11-25 18:03:59,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:03:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2990 transitions. [2021-11-25 18:03:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:03:59,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:59,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:59,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-25 18:03:59,208 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:03:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -935035744, now seen corresponding path program 1 times [2021-11-25 18:03:59,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:59,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257229279] [2021-11-25 18:03:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:59,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:59,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:59,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257229279] [2021-11-25 18:03:59,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257229279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:59,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:59,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:03:59,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454048871] [2021-11-25 18:03:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:59,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:03:59,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:03:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:03:59,378 INFO L87 Difference]: Start difference. First operand 2156 states and 2990 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:03,428 INFO L93 Difference]: Finished difference Result 3411 states and 4612 transitions. [2021-11-25 18:04:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:03,432 INFO L225 Difference]: With dead ends: 3411 [2021-11-25 18:04:03,432 INFO L226 Difference]: Without dead ends: 3291 [2021-11-25 18:04:03,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:03,434 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 7115 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7115 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:03,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7115 Valid, 3866 Invalid, 4511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:04:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-11-25 18:04:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2156. [2021-11-25 18:04:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.409433962264151) internal successors, (2988), 2155 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2988 transitions. [2021-11-25 18:04:04,107 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2988 transitions. Word has length 129 [2021-11-25 18:04:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:04,108 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2988 transitions. [2021-11-25 18:04:04,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2988 transitions. [2021-11-25 18:04:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:04,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:04,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:04,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-25 18:04:04,110 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1681940162, now seen corresponding path program 1 times [2021-11-25 18:04:04,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:04,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427631299] [2021-11-25 18:04:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:04,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:04,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:04,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427631299] [2021-11-25 18:04:04,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427631299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:04,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:04,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:04,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615418072] [2021-11-25 18:04:04,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:04,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:04,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:04,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:04,283 INFO L87 Difference]: Start difference. First operand 2156 states and 2988 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:08,032 INFO L93 Difference]: Finished difference Result 3565 states and 4878 transitions. [2021-11-25 18:04:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:08,036 INFO L225 Difference]: With dead ends: 3565 [2021-11-25 18:04:08,036 INFO L226 Difference]: Without dead ends: 3437 [2021-11-25 18:04:08,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:08,038 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 7332 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7332 SdHoareTripleChecker+Valid, 4251 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:08,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7332 Valid, 4251 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:04:08,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2021-11-25 18:04:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 2156. [2021-11-25 18:04:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4084905660377358) internal successors, (2986), 2155 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2986 transitions. [2021-11-25 18:04:08,647 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2986 transitions. Word has length 129 [2021-11-25 18:04:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:08,647 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2986 transitions. [2021-11-25 18:04:08,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2986 transitions. [2021-11-25 18:04:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:08,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:08,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:08,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-25 18:04:08,650 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2128978869, now seen corresponding path program 1 times [2021-11-25 18:04:08,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:08,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333319457] [2021-11-25 18:04:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:08,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:08,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:08,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333319457] [2021-11-25 18:04:08,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333319457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:08,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:08,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:08,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453474917] [2021-11-25 18:04:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:08,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:08,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:08,812 INFO L87 Difference]: Start difference. First operand 2156 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:12,882 INFO L93 Difference]: Finished difference Result 3407 states and 4602 transitions. [2021-11-25 18:04:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:12,886 INFO L225 Difference]: With dead ends: 3407 [2021-11-25 18:04:12,886 INFO L226 Difference]: Without dead ends: 3291 [2021-11-25 18:04:12,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:12,887 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 4836 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4836 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 4478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:12,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4836 Valid, 3980 Invalid, 4478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:04:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-11-25 18:04:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2156. [2021-11-25 18:04:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4075471698113207) internal successors, (2984), 2155 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2984 transitions. [2021-11-25 18:04:13,513 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2984 transitions. Word has length 129 [2021-11-25 18:04:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:13,513 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2984 transitions. [2021-11-25 18:04:13,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2984 transitions. [2021-11-25 18:04:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:13,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:13,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:13,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-25 18:04:13,516 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1489424329, now seen corresponding path program 1 times [2021-11-25 18:04:13,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:13,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008189893] [2021-11-25 18:04:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:13,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:13,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008189893] [2021-11-25 18:04:13,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008189893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:13,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:13,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:13,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945033947] [2021-11-25 18:04:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:13,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:13,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:13,682 INFO L87 Difference]: Start difference. First operand 2156 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:17,854 INFO L93 Difference]: Finished difference Result 3411 states and 4602 transitions. [2021-11-25 18:04:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:17,858 INFO L225 Difference]: With dead ends: 3411 [2021-11-25 18:04:17,858 INFO L226 Difference]: Without dead ends: 3291 [2021-11-25 18:04:17,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:17,860 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 4822 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4822 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:17,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4822 Valid, 3969 Invalid, 4437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:04:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-11-25 18:04:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2156. [2021-11-25 18:04:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4066037735849057) internal successors, (2982), 2155 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2982 transitions. [2021-11-25 18:04:18,471 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2982 transitions. Word has length 129 [2021-11-25 18:04:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:18,471 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2982 transitions. [2021-11-25 18:04:18,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:18,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2982 transitions. [2021-11-25 18:04:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:18,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:18,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:18,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-25 18:04:18,474 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash -358340609, now seen corresponding path program 1 times [2021-11-25 18:04:18,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:18,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232894785] [2021-11-25 18:04:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:18,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:18,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:18,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232894785] [2021-11-25 18:04:18,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232894785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:18,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:18,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:18,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951453597] [2021-11-25 18:04:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:18,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:18,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:18,635 INFO L87 Difference]: Start difference. First operand 2156 states and 2982 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:23,169 INFO L93 Difference]: Finished difference Result 3747 states and 5168 transitions. [2021-11-25 18:04:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:04:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:23,174 INFO L225 Difference]: With dead ends: 3747 [2021-11-25 18:04:23,174 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:04:23,176 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 [2021-11-25 18:04:23,176 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 5743 mSDsluCounter, 5709 mSDsCounter, 0 mSdLazyCounter, 6010 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5743 SdHoareTripleChecker+Valid, 7422 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 6010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:23,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5743 Valid, 7422 Invalid, 6062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 6010 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 18:04:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:04:23,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2156. [2021-11-25 18:04:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.4056603773584906) internal successors, (2980), 2155 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2980 transitions. [2021-11-25 18:04:23,849 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2980 transitions. Word has length 129 [2021-11-25 18:04:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:23,849 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2980 transitions. [2021-11-25 18:04:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2980 transitions. [2021-11-25 18:04:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:23,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:23,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:23,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-25 18:04:23,853 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:23,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2087371130, now seen corresponding path program 1 times [2021-11-25 18:04:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373808350] [2021-11-25 18:04:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:23,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:24,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:24,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373808350] [2021-11-25 18:04:24,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373808350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:24,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:24,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:04:24,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973123219] [2021-11-25 18:04:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:24,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:04:24,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:04:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:04:24,116 INFO L87 Difference]: Start difference. First operand 2156 states and 2980 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:31,701 INFO L93 Difference]: Finished difference Result 4597 states and 6308 transitions. [2021-11-25 18:04:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:04:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:31,705 INFO L225 Difference]: With dead ends: 4597 [2021-11-25 18:04:31,706 INFO L226 Difference]: Without dead ends: 4383 [2021-11-25 18:04:31,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:04:31,707 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 10492 mSDsluCounter, 6571 mSDsCounter, 0 mSdLazyCounter, 7619 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10492 SdHoareTripleChecker+Valid, 8058 SdHoareTripleChecker+Invalid, 8548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 7619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:31,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10492 Valid, 8058 Invalid, 8548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 7619 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 18:04:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4383 states. [2021-11-25 18:04:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4383 to 2164. [2021-11-25 18:04:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.4041353383458646) internal successors, (2988), 2163 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2988 transitions. [2021-11-25 18:04:32,296 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2988 transitions. Word has length 129 [2021-11-25 18:04:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:32,296 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2988 transitions. [2021-11-25 18:04:32,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2988 transitions. [2021-11-25 18:04:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:32,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:32,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:32,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-25 18:04:32,299 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1285083391, now seen corresponding path program 1 times [2021-11-25 18:04:32,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:32,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054629399] [2021-11-25 18:04:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:32,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:32,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:32,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054629399] [2021-11-25 18:04:32,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054629399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:32,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:32,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:32,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977591910] [2021-11-25 18:04:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:32,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:32,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:32,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:32,441 INFO L87 Difference]: Start difference. First operand 2164 states and 2988 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:36,491 INFO L93 Difference]: Finished difference Result 3685 states and 5063 transitions. [2021-11-25 18:04:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:04:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:36,495 INFO L225 Difference]: With dead ends: 3685 [2021-11-25 18:04:36,495 INFO L226 Difference]: Without dead ends: 3525 [2021-11-25 18:04:36,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:04:36,496 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 3917 mSDsluCounter, 5261 mSDsCounter, 0 mSdLazyCounter, 5794 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 6737 SdHoareTripleChecker+Invalid, 5860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:36,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3917 Valid, 6737 Invalid, 5860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5794 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:04:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-25 18:04:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 2164. [2021-11-25 18:04:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.4031954887218046) internal successors, (2986), 2163 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2986 transitions. [2021-11-25 18:04:37,098 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2986 transitions. Word has length 129 [2021-11-25 18:04:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:37,099 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2986 transitions. [2021-11-25 18:04:37,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2986 transitions. [2021-11-25 18:04:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:37,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:37,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:37,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-25 18:04:37,101 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 330811276, now seen corresponding path program 1 times [2021-11-25 18:04:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:37,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834394119] [2021-11-25 18:04:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:37,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:37,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834394119] [2021-11-25 18:04:37,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834394119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:37,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:37,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:37,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249626302] [2021-11-25 18:04:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:37,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:37,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:37,245 INFO L87 Difference]: Start difference. First operand 2164 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:41,031 INFO L93 Difference]: Finished difference Result 3679 states and 5054 transitions. [2021-11-25 18:04:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:41,035 INFO L225 Difference]: With dead ends: 3679 [2021-11-25 18:04:41,035 INFO L226 Difference]: Without dead ends: 3525 [2021-11-25 18:04:41,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:04:41,037 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 6532 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6532 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 5085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:41,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6532 Valid, 5424 Invalid, 5085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4957 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:04:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-25 18:04:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 2164. [2021-11-25 18:04:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.4022556390977443) internal successors, (2984), 2163 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2984 transitions. [2021-11-25 18:04:41,657 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2984 transitions. Word has length 129 [2021-11-25 18:04:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:41,658 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2984 transitions. [2021-11-25 18:04:41,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2984 transitions. [2021-11-25 18:04:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:41,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:41,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:41,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-25 18:04:41,660 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash -217627505, now seen corresponding path program 1 times [2021-11-25 18:04:41,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:41,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655176962] [2021-11-25 18:04:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:41,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:41,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:41,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655176962] [2021-11-25 18:04:41,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655176962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:41,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:41,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:41,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228063621] [2021-11-25 18:04:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:41,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:41,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:41,786 INFO L87 Difference]: Start difference. First operand 2164 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:45,440 INFO L93 Difference]: Finished difference Result 3583 states and 4881 transitions. [2021-11-25 18:04:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:04:45,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:45,443 INFO L225 Difference]: With dead ends: 3583 [2021-11-25 18:04:45,443 INFO L226 Difference]: Without dead ends: 3445 [2021-11-25 18:04:45,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:45,444 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 4796 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 4156 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 4329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 4156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:45,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4796 Valid, 4365 Invalid, 4329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 4156 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:04:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2021-11-25 18:04:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 2164. [2021-11-25 18:04:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.4013157894736843) internal successors, (2982), 2163 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2982 transitions. [2021-11-25 18:04:46,033 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2982 transitions. Word has length 129 [2021-11-25 18:04:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:46,034 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2982 transitions. [2021-11-25 18:04:46,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2982 transitions. [2021-11-25 18:04:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:46,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:46,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:46,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-25 18:04:46,036 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1515517543, now seen corresponding path program 1 times [2021-11-25 18:04:46,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:46,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614313052] [2021-11-25 18:04:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:46,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:46,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:46,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614313052] [2021-11-25 18:04:46,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614313052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:46,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:46,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:04:46,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310589409] [2021-11-25 18:04:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:46,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:04:46,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:04:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:04:46,219 INFO L87 Difference]: Start difference. First operand 2164 states and 2982 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:52,735 INFO L93 Difference]: Finished difference Result 4629 states and 6348 transitions. [2021-11-25 18:04:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:04:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:52,740 INFO L225 Difference]: With dead ends: 4629 [2021-11-25 18:04:52,741 INFO L226 Difference]: Without dead ends: 4399 [2021-11-25 18:04:52,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:04:52,742 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 10791 mSDsluCounter, 5007 mSDsCounter, 0 mSdLazyCounter, 6088 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10791 SdHoareTripleChecker+Valid, 6456 SdHoareTripleChecker+Invalid, 7042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 6088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:52,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10791 Valid, 6456 Invalid, 7042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 6088 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:04:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2021-11-25 18:04:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 2172. [2021-11-25 18:04:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.399812734082397) internal successors, (2990), 2171 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2990 transitions. [2021-11-25 18:04:53,354 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2990 transitions. Word has length 129 [2021-11-25 18:04:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:53,354 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2990 transitions. [2021-11-25 18:04:53,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2990 transitions. [2021-11-25 18:04:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:53,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:53,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:53,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-25 18:04:53,357 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1023777641, now seen corresponding path program 1 times [2021-11-25 18:04:53,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:53,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470869178] [2021-11-25 18:04:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:53,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:53,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:53,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470869178] [2021-11-25 18:04:53,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470869178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:53,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:53,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:53,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205961258] [2021-11-25 18:04:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:53,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:53,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:53,492 INFO L87 Difference]: Start difference. First operand 2172 states and 2990 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:57,252 INFO L93 Difference]: Finished difference Result 3679 states and 5044 transitions. [2021-11-25 18:04:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:04:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:04:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:57,256 INFO L225 Difference]: With dead ends: 3679 [2021-11-25 18:04:57,256 INFO L226 Difference]: Without dead ends: 3533 [2021-11-25 18:04:57,257 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 [2021-11-25 18:04:57,257 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 5701 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 4818 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5701 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:57,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5701 Valid, 5736 Invalid, 4911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4818 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:04:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2021-11-25 18:04:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 2172. [2021-11-25 18:04:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.398876404494382) internal successors, (2988), 2171 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2988 transitions. [2021-11-25 18:04:57,837 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2988 transitions. Word has length 129 [2021-11-25 18:04:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:57,837 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2988 transitions. [2021-11-25 18:04:57,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:04:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2988 transitions. [2021-11-25 18:04:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:04:57,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:57,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:57,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-25 18:04:57,839 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:04:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash -593004768, now seen corresponding path program 1 times [2021-11-25 18:04:57,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:57,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371337899] [2021-11-25 18:04:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:57,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:57,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:57,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371337899] [2021-11-25 18:04:57,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371337899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:57,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:57,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:04:57,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327308353] [2021-11-25 18:04:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:57,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:57,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:57,949 INFO L87 Difference]: Start difference. First operand 2172 states and 2988 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:01,446 INFO L93 Difference]: Finished difference Result 3591 states and 4883 transitions. [2021-11-25 18:05:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:05:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:01,450 INFO L225 Difference]: With dead ends: 3591 [2021-11-25 18:05:01,451 INFO L226 Difference]: Without dead ends: 3453 [2021-11-25 18:05:01,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:01,452 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 7165 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7165 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:01,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7165 Valid, 4405 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4191 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:05:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-11-25 18:05:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2172. [2021-11-25 18:05:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.397940074906367) internal successors, (2986), 2171 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2986 transitions. [2021-11-25 18:05:02,101 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2986 transitions. Word has length 129 [2021-11-25 18:05:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:02,102 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2986 transitions. [2021-11-25 18:05:02,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2986 transitions. [2021-11-25 18:05:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:05:02,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:02,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:02,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-25 18:05:02,104 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash -785856208, now seen corresponding path program 1 times [2021-11-25 18:05:02,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:02,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757642932] [2021-11-25 18:05:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:02,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:02,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:02,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757642932] [2021-11-25 18:05:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757642932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:02,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:02,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:02,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676777208] [2021-11-25 18:05:02,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:02,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:02,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:02,236 INFO L87 Difference]: Start difference. First operand 2172 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:06,370 INFO L93 Difference]: Finished difference Result 3697 states and 5063 transitions. [2021-11-25 18:05:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:05:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:06,373 INFO L225 Difference]: With dead ends: 3697 [2021-11-25 18:05:06,373 INFO L226 Difference]: Without dead ends: 3533 [2021-11-25 18:05:06,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:05:06,374 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 6527 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 5418 SdHoareTripleChecker+Invalid, 5062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:06,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6527 Valid, 5418 Invalid, 5062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:05:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2021-11-25 18:05:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 2172. [2021-11-25 18:05:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.3970037453183521) internal successors, (2984), 2171 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2984 transitions. [2021-11-25 18:05:07,031 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2984 transitions. Word has length 129 [2021-11-25 18:05:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:07,031 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2984 transitions. [2021-11-25 18:05:07,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2984 transitions. [2021-11-25 18:05:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:05:07,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:07,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:07,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-25 18:05:07,034 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2083746246, now seen corresponding path program 1 times [2021-11-25 18:05:07,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:07,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495252994] [2021-11-25 18:05:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:07,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:07,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:07,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495252994] [2021-11-25 18:05:07,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495252994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:07,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:07,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:07,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558119446] [2021-11-25 18:05:07,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:07,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:07,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:07,154 INFO L87 Difference]: Start difference. First operand 2172 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:11,293 INFO L93 Difference]: Finished difference Result 3787 states and 5202 transitions. [2021-11-25 18:05:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:05:11,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:05:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:11,297 INFO L225 Difference]: With dead ends: 3787 [2021-11-25 18:05:11,297 INFO L226 Difference]: Without dead ends: 3557 [2021-11-25 18:05:11,298 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 [2021-11-25 18:05:11,299 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 5769 mSDsluCounter, 5396 mSDsCounter, 0 mSdLazyCounter, 5746 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5769 SdHoareTripleChecker+Valid, 6944 SdHoareTripleChecker+Invalid, 5798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:11,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5769 Valid, 6944 Invalid, 5798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 5746 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:05:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-11-25 18:05:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2172. [2021-11-25 18:05:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.396067415730337) internal successors, (2982), 2171 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2982 transitions. [2021-11-25 18:05:11,988 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2982 transitions. Word has length 129 [2021-11-25 18:05:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:11,989 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2982 transitions. [2021-11-25 18:05:11,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2982 transitions. [2021-11-25 18:05:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 18:05:11,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:11,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:11,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-25 18:05:11,992 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 464552015, now seen corresponding path program 1 times [2021-11-25 18:05:11,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599347098] [2021-11-25 18:05:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:11,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:12,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:12,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599347098] [2021-11-25 18:05:12,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599347098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:12,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:12,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:05:12,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986813302] [2021-11-25 18:05:12,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:12,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:05:12,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:12,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:05:12,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:05:12,178 INFO L87 Difference]: Start difference. First operand 2172 states and 2982 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:19,149 INFO L93 Difference]: Finished difference Result 5001 states and 6836 transitions. [2021-11-25 18:05:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:05:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2021-11-25 18:05:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:19,153 INFO L225 Difference]: With dead ends: 5001 [2021-11-25 18:05:19,153 INFO L226 Difference]: Without dead ends: 4631 [2021-11-25 18:05:19,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:05:19,154 INFO L933 BasicCegarLoop]: 1718 mSDtfsCounter, 10510 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 6668 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10510 SdHoareTripleChecker+Valid, 7188 SdHoareTripleChecker+Invalid, 7515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 6668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:19,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10510 Valid, 7188 Invalid, 7515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 6668 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 18:05:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2021-11-25 18:05:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 2180. [2021-11-25 18:05:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3945895522388059) internal successors, (2990), 2179 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2990 transitions. [2021-11-25 18:05:19,839 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2990 transitions. Word has length 129 [2021-11-25 18:05:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:19,839 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2990 transitions. [2021-11-25 18:05:19,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2990 transitions. [2021-11-25 18:05:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:19,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:19,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:19,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-25 18:05:19,841 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash -762812687, now seen corresponding path program 1 times [2021-11-25 18:05:19,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:19,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255437505] [2021-11-25 18:05:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:19,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:19,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255437505] [2021-11-25 18:05:19,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255437505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:19,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:19,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485397129] [2021-11-25 18:05:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:19,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:19,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:19,978 INFO L87 Difference]: Start difference. First operand 2180 states and 2990 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:24,224 INFO L93 Difference]: Finished difference Result 3666 states and 5011 transitions. [2021-11-25 18:05:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:05:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:24,228 INFO L225 Difference]: With dead ends: 3666 [2021-11-25 18:05:24,228 INFO L226 Difference]: Without dead ends: 3541 [2021-11-25 18:05:24,229 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 [2021-11-25 18:05:24,230 INFO L933 BasicCegarLoop]: 1524 mSDtfsCounter, 4079 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 5566 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 5566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:24,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4079 Valid, 6824 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 5566 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:05:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-11-25 18:05:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2180. [2021-11-25 18:05:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3941231343283582) internal successors, (2989), 2179 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2989 transitions. [2021-11-25 18:05:24,879 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2989 transitions. Word has length 130 [2021-11-25 18:05:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:24,879 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2989 transitions. [2021-11-25 18:05:24,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2989 transitions. [2021-11-25 18:05:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:24,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:24,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-25 18:05:24,882 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash -493375877, now seen corresponding path program 1 times [2021-11-25 18:05:24,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170585162] [2021-11-25 18:05:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:24,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:25,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:25,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170585162] [2021-11-25 18:05:25,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170585162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:25,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:25,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:25,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351654350] [2021-11-25 18:05:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:25,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:25,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:25,030 INFO L87 Difference]: Start difference. First operand 2180 states and 2989 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:28,696 INFO L93 Difference]: Finished difference Result 3579 states and 4855 transitions. [2021-11-25 18:05:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:28,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:28,701 INFO L225 Difference]: With dead ends: 3579 [2021-11-25 18:05:28,701 INFO L226 Difference]: Without dead ends: 3461 [2021-11-25 18:05:28,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:28,702 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 4684 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:28,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4684 Valid, 4493 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:05:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-11-25 18:05:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2180. [2021-11-25 18:05:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3936567164179106) internal successors, (2988), 2179 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2988 transitions. [2021-11-25 18:05:29,388 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2988 transitions. Word has length 130 [2021-11-25 18:05:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:29,389 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2988 transitions. [2021-11-25 18:05:29,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2988 transitions. [2021-11-25 18:05:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:29,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:29,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:29,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-25 18:05:29,391 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash -538281928, now seen corresponding path program 1 times [2021-11-25 18:05:29,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:29,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803737712] [2021-11-25 18:05:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:29,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:29,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803737712] [2021-11-25 18:05:29,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803737712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:29,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:29,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:29,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429907416] [2021-11-25 18:05:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:29,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:29,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:29,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:29,506 INFO L87 Difference]: Start difference. First operand 2180 states and 2988 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:33,137 INFO L93 Difference]: Finished difference Result 3581 states and 4856 transitions. [2021-11-25 18:05:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:33,140 INFO L225 Difference]: With dead ends: 3581 [2021-11-25 18:05:33,141 INFO L226 Difference]: Without dead ends: 3461 [2021-11-25 18:05:33,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:33,142 INFO L933 BasicCegarLoop]: 1061 mSDtfsCounter, 4667 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 4254 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 4424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:33,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4667 Valid, 4502 Invalid, 4424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4254 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:05:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-11-25 18:05:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2180. [2021-11-25 18:05:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.392723880597015) internal successors, (2986), 2179 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2986 transitions. [2021-11-25 18:05:33,782 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2986 transitions. Word has length 130 [2021-11-25 18:05:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:33,783 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2986 transitions. [2021-11-25 18:05:33,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2986 transitions. [2021-11-25 18:05:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:33,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:33,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:33,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-25 18:05:33,787 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1702394184, now seen corresponding path program 1 times [2021-11-25 18:05:33,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327042350] [2021-11-25 18:05:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:33,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:33,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:33,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327042350] [2021-11-25 18:05:33,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327042350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:33,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:33,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:33,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837375403] [2021-11-25 18:05:33,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:33,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:33,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:33,939 INFO L87 Difference]: Start difference. First operand 2180 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:38,054 INFO L93 Difference]: Finished difference Result 3683 states and 5032 transitions. [2021-11-25 18:05:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:05:38,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:38,059 INFO L225 Difference]: With dead ends: 3683 [2021-11-25 18:05:38,059 INFO L226 Difference]: Without dead ends: 3541 [2021-11-25 18:05:38,060 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 [2021-11-25 18:05:38,061 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 3925 mSDsluCounter, 5415 mSDsCounter, 0 mSdLazyCounter, 5749 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 6978 SdHoareTripleChecker+Invalid, 5817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 5749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:38,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 6978 Invalid, 5817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 5749 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 18:05:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-11-25 18:05:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2180. [2021-11-25 18:05:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3917910447761195) internal successors, (2984), 2179 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2984 transitions. [2021-11-25 18:05:38,821 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2984 transitions. Word has length 130 [2021-11-25 18:05:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:38,822 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2984 transitions. [2021-11-25 18:05:38,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2984 transitions. [2021-11-25 18:05:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:38,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:38,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:38,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-25 18:05:38,824 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1436364222, now seen corresponding path program 1 times [2021-11-25 18:05:38,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24760918] [2021-11-25 18:05:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:38,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:38,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:38,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24760918] [2021-11-25 18:05:38,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24760918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:38,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:38,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:38,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532444910] [2021-11-25 18:05:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:38,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:38,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:38,956 INFO L87 Difference]: Start difference. First operand 2180 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:42,833 INFO L93 Difference]: Finished difference Result 3779 states and 5177 transitions. [2021-11-25 18:05:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:42,836 INFO L225 Difference]: With dead ends: 3779 [2021-11-25 18:05:42,836 INFO L226 Difference]: Without dead ends: 3565 [2021-11-25 18:05:42,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:42,837 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 6336 mSDsluCounter, 4385 mSDsCounter, 0 mSdLazyCounter, 5150 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 5763 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 5150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:42,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6336 Valid, 5763 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 5150 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:05:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-11-25 18:05:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 2172. [2021-11-25 18:05:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.392322097378277) internal successors, (2974), 2171 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2974 transitions. [2021-11-25 18:05:43,453 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2974 transitions. Word has length 130 [2021-11-25 18:05:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:43,453 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2974 transitions. [2021-11-25 18:05:43,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2974 transitions. [2021-11-25 18:05:43,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:43,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:43,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:43,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-25 18:05:43,455 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1456764283, now seen corresponding path program 1 times [2021-11-25 18:05:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570924318] [2021-11-25 18:05:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:43,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:43,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:43,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570924318] [2021-11-25 18:05:43,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570924318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:43,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:43,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:43,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107870842] [2021-11-25 18:05:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:43,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:43,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:43,552 INFO L87 Difference]: Start difference. First operand 2172 states and 2974 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:47,367 INFO L93 Difference]: Finished difference Result 3795 states and 5200 transitions. [2021-11-25 18:05:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:47,370 INFO L225 Difference]: With dead ends: 3795 [2021-11-25 18:05:47,371 INFO L226 Difference]: Without dead ends: 3565 [2021-11-25 18:05:47,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:47,372 INFO L933 BasicCegarLoop]: 1439 mSDtfsCounter, 4155 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 5296 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:47,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4155 Valid, 5955 Invalid, 5341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5296 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:05:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-11-25 18:05:48,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 2164. [2021-11-25 18:05:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.3928571428571428) internal successors, (2964), 2163 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2964 transitions. [2021-11-25 18:05:48,019 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2964 transitions. Word has length 130 [2021-11-25 18:05:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:48,019 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2964 transitions. [2021-11-25 18:05:48,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2964 transitions. [2021-11-25 18:05:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 18:05:48,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:48,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:48,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-25 18:05:48,021 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash -232579651, now seen corresponding path program 1 times [2021-11-25 18:05:48,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:48,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815469627] [2021-11-25 18:05:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:48,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:48,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:48,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815469627] [2021-11-25 18:05:48,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815469627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:48,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:48,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:48,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425943672] [2021-11-25 18:05:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:48,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:48,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:48,129 INFO L87 Difference]: Start difference. First operand 2164 states and 2964 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:51,926 INFO L93 Difference]: Finished difference Result 3947 states and 5408 transitions. [2021-11-25 18:05:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-25 18:05:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:51,929 INFO L225 Difference]: With dead ends: 3947 [2021-11-25 18:05:51,929 INFO L226 Difference]: Without dead ends: 3577 [2021-11-25 18:05:51,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:51,930 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 5986 mSDsluCounter, 4676 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5986 SdHoareTripleChecker+Valid, 6229 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:51,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5986 Valid, 6229 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:05:51,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2021-11-25 18:05:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 2156. [2021-11-25 18:05:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.3933962264150943) internal successors, (2954), 2155 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2954 transitions. [2021-11-25 18:05:52,540 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2954 transitions. Word has length 130 [2021-11-25 18:05:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:52,541 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2954 transitions. [2021-11-25 18:05:52,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2954 transitions. [2021-11-25 18:05:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:05:52,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:52,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:52,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-25 18:05:52,543 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1944265188, now seen corresponding path program 1 times [2021-11-25 18:05:52,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:52,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088273940] [2021-11-25 18:05:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:52,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:52,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088273940] [2021-11-25 18:05:52,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088273940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:52,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:52,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:52,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970727926] [2021-11-25 18:05:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:52,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:52,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:52,649 INFO L87 Difference]: Start difference. First operand 2156 states and 2954 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:56,174 INFO L93 Difference]: Finished difference Result 3409 states and 4568 transitions. [2021-11-25 18:05:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:05:56,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:05:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:56,178 INFO L225 Difference]: With dead ends: 3409 [2021-11-25 18:05:56,178 INFO L226 Difference]: Without dead ends: 3291 [2021-11-25 18:05:56,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:05:56,179 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 4813 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:56,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 3953 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 18:05:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-11-25 18:05:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2156. [2021-11-25 18:05:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.3929245283018867) internal successors, (2953), 2155 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2953 transitions. [2021-11-25 18:05:56,836 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2953 transitions. Word has length 131 [2021-11-25 18:05:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:56,836 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2953 transitions. [2021-11-25 18:05:56,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:05:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2953 transitions. [2021-11-25 18:05:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:05:56,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:56,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:56,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-25 18:05:56,838 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:05:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1433232548, now seen corresponding path program 1 times [2021-11-25 18:05:56,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74199638] [2021-11-25 18:05:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:56,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:05:56,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74199638] [2021-11-25 18:05:56,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74199638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:56,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:56,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:05:56,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098171707] [2021-11-25 18:05:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:56,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:05:56,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:05:56,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:05:56,953 INFO L87 Difference]: Start difference. First operand 2156 states and 2953 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:00,833 INFO L93 Difference]: Finished difference Result 3555 states and 4818 transitions. [2021-11-25 18:06:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:06:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:00,836 INFO L225 Difference]: With dead ends: 3555 [2021-11-25 18:06:00,837 INFO L226 Difference]: Without dead ends: 3437 [2021-11-25 18:06:00,837 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 [2021-11-25 18:06:00,838 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 5725 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 5074 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5725 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:00,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5725 Valid, 5656 Invalid, 5252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5074 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:06:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2021-11-25 18:06:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 2156. [2021-11-25 18:06:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2120 states have (on average 1.3924528301886792) internal successors, (2952), 2155 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2952 transitions. [2021-11-25 18:06:01,496 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2952 transitions. Word has length 131 [2021-11-25 18:06:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:01,497 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2952 transitions. [2021-11-25 18:06:01,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2952 transitions. [2021-11-25 18:06:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:01,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:01,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:01,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-25 18:06:01,499 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 26134002, now seen corresponding path program 1 times [2021-11-25 18:06:01,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234604085] [2021-11-25 18:06:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:01,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:01,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234604085] [2021-11-25 18:06:01,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234604085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:01,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:01,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:06:01,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709341097] [2021-11-25 18:06:01,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:01,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:06:01,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:06:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:06:01,694 INFO L87 Difference]: Start difference. First operand 2156 states and 2952 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:07,878 INFO L93 Difference]: Finished difference Result 4348 states and 5922 transitions. [2021-11-25 18:06:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:06:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:07,882 INFO L225 Difference]: With dead ends: 4348 [2021-11-25 18:06:07,882 INFO L226 Difference]: Without dead ends: 4207 [2021-11-25 18:06:07,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:06:07,883 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 10288 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 5899 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10288 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 6895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 5899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:07,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10288 Valid, 6436 Invalid, 6895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 5899 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:06:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-11-25 18:06:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 2160. [2021-11-25 18:06:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2124 states have (on average 1.3917137476459511) internal successors, (2956), 2159 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2956 transitions. [2021-11-25 18:06:08,621 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2956 transitions. Word has length 131 [2021-11-25 18:06:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:08,621 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 2956 transitions. [2021-11-25 18:06:08,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2956 transitions. [2021-11-25 18:06:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:08,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:08,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:08,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-25 18:06:08,623 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1605723080, now seen corresponding path program 1 times [2021-11-25 18:06:08,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:08,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858660866] [2021-11-25 18:06:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:08,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:08,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:08,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858660866] [2021-11-25 18:06:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858660866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:08,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:08,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:08,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758104881] [2021-11-25 18:06:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:08,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:08,742 INFO L87 Difference]: Start difference. First operand 2160 states and 2956 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:12,764 INFO L93 Difference]: Finished difference Result 3565 states and 4830 transitions. [2021-11-25 18:06:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:06:12,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:12,767 INFO L225 Difference]: With dead ends: 3565 [2021-11-25 18:06:12,767 INFO L226 Difference]: Without dead ends: 3441 [2021-11-25 18:06:12,768 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 [2021-11-25 18:06:12,768 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 5730 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5730 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 5245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:12,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5730 Valid, 5650 Invalid, 5245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:06:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-11-25 18:06:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 2160. [2021-11-25 18:06:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2124 states have (on average 1.3912429378531073) internal successors, (2955), 2159 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2955 transitions. [2021-11-25 18:06:13,469 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2955 transitions. Word has length 131 [2021-11-25 18:06:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:13,470 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 2955 transitions. [2021-11-25 18:06:13,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2955 transitions. [2021-11-25 18:06:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:13,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:13,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:13,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-25 18:06:13,472 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1926846797, now seen corresponding path program 1 times [2021-11-25 18:06:13,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476326411] [2021-11-25 18:06:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:13,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:13,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:13,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476326411] [2021-11-25 18:06:13,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476326411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:13,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:13,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:13,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43754311] [2021-11-25 18:06:13,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:13,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:13,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:13,586 INFO L87 Difference]: Start difference. First operand 2160 states and 2955 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:17,679 INFO L93 Difference]: Finished difference Result 3559 states and 4820 transitions. [2021-11-25 18:06:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:06:17,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:17,682 INFO L225 Difference]: With dead ends: 3559 [2021-11-25 18:06:17,682 INFO L226 Difference]: Without dead ends: 3441 [2021-11-25 18:06:17,683 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 [2021-11-25 18:06:17,683 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 5719 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 5066 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5719 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 5244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5719 Valid, 5656 Invalid, 5244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5066 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:06:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2021-11-25 18:06:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 2160. [2021-11-25 18:06:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2124 states have (on average 1.3907721280602636) internal successors, (2954), 2159 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2954 transitions. [2021-11-25 18:06:18,367 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2954 transitions. Word has length 131 [2021-11-25 18:06:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:18,367 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 2954 transitions. [2021-11-25 18:06:18,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2954 transitions. [2021-11-25 18:06:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:18,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:18,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:18,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-25 18:06:18,369 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1311798030, now seen corresponding path program 1 times [2021-11-25 18:06:18,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:18,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739474017] [2021-11-25 18:06:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:18,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:18,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:18,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739474017] [2021-11-25 18:06:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739474017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:18,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:18,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:06:18,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350886077] [2021-11-25 18:06:18,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:06:18,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:06:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:06:18,555 INFO L87 Difference]: Start difference. First operand 2160 states and 2954 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:25,315 INFO L93 Difference]: Finished difference Result 4328 states and 5891 transitions. [2021-11-25 18:06:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:06:25,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:25,320 INFO L225 Difference]: With dead ends: 4328 [2021-11-25 18:06:25,320 INFO L226 Difference]: Without dead ends: 4197 [2021-11-25 18:06:25,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:06:25,322 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 9890 mSDsluCounter, 5046 mSDsCounter, 0 mSdLazyCounter, 6088 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 7077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 6088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:25,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9890 Valid, 6497 Invalid, 7077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 6088 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 18:06:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-11-25 18:06:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 2164. [2021-11-25 18:06:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2128 states have (on average 1.3900375939849625) internal successors, (2958), 2163 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2958 transitions. [2021-11-25 18:06:26,041 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2958 transitions. Word has length 131 [2021-11-25 18:06:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:26,042 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 2958 transitions. [2021-11-25 18:06:26,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2958 transitions. [2021-11-25 18:06:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:26,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:26,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:26,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-25 18:06:26,045 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash 860742495, now seen corresponding path program 1 times [2021-11-25 18:06:26,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:26,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999907153] [2021-11-25 18:06:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:26,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:26,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999907153] [2021-11-25 18:06:26,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999907153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:26,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:06:26,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642680284] [2021-11-25 18:06:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:26,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:06:26,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:06:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:06:26,263 INFO L87 Difference]: Start difference. First operand 2164 states and 2958 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:33,438 INFO L93 Difference]: Finished difference Result 4366 states and 5934 transitions. [2021-11-25 18:06:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:06:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:33,443 INFO L225 Difference]: With dead ends: 4366 [2021-11-25 18:06:33,443 INFO L226 Difference]: Without dead ends: 4216 [2021-11-25 18:06:33,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:06:33,444 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 10882 mSDsluCounter, 6242 mSDsCounter, 0 mSdLazyCounter, 7037 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10882 SdHoareTripleChecker+Valid, 7672 SdHoareTripleChecker+Invalid, 8080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 7037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:33,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10882 Valid, 7672 Invalid, 8080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 7037 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:06:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2021-11-25 18:06:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 2168. [2021-11-25 18:06:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2132 states have (on average 1.3893058161350844) internal successors, (2962), 2167 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2962 transitions. [2021-11-25 18:06:34,215 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2962 transitions. Word has length 131 [2021-11-25 18:06:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:34,216 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 2962 transitions. [2021-11-25 18:06:34,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2962 transitions. [2021-11-25 18:06:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:34,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:34,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:34,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-25 18:06:34,219 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash 451897267, now seen corresponding path program 1 times [2021-11-25 18:06:34,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:34,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059346941] [2021-11-25 18:06:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:34,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:34,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059346941] [2021-11-25 18:06:34,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059346941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:34,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:34,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:34,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513727630] [2021-11-25 18:06:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:34,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:34,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:34,331 INFO L87 Difference]: Start difference. First operand 2168 states and 2962 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:38,188 INFO L93 Difference]: Finished difference Result 3577 states and 4840 transitions. [2021-11-25 18:06:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:06:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:38,191 INFO L225 Difference]: With dead ends: 3577 [2021-11-25 18:06:38,191 INFO L226 Difference]: Without dead ends: 3449 [2021-11-25 18:06:38,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:06:38,192 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 6960 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6960 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 4518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:38,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6960 Valid, 4536 Invalid, 4518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:06:38,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-11-25 18:06:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2168. [2021-11-25 18:06:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2132 states have (on average 1.3888367729831144) internal successors, (2961), 2167 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2961 transitions. [2021-11-25 18:06:38,921 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2961 transitions. Word has length 131 [2021-11-25 18:06:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:38,921 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 2961 transitions. [2021-11-25 18:06:38,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2961 transitions. [2021-11-25 18:06:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:38,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:38,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:38,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-25 18:06:38,923 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1033786483, now seen corresponding path program 1 times [2021-11-25 18:06:38,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586153993] [2021-11-25 18:06:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:38,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:39,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586153993] [2021-11-25 18:06:39,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586153993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:39,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:39,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:39,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324205237] [2021-11-25 18:06:39,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:39,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:39,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:39,035 INFO L87 Difference]: Start difference. First operand 2168 states and 2961 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:43,064 INFO L93 Difference]: Finished difference Result 3573 states and 4835 transitions. [2021-11-25 18:06:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:06:43,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:43,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:43,067 INFO L225 Difference]: With dead ends: 3573 [2021-11-25 18:06:43,067 INFO L226 Difference]: Without dead ends: 3449 [2021-11-25 18:06:43,068 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 [2021-11-25 18:06:43,068 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 5721 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5721 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 5233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:43,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5721 Valid, 5650 Invalid, 5233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5055 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:06:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-11-25 18:06:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2168. [2021-11-25 18:06:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2132 states have (on average 1.3883677298311445) internal successors, (2960), 2167 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2960 transitions. [2021-11-25 18:06:43,762 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2960 transitions. Word has length 131 [2021-11-25 18:06:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:43,762 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 2960 transitions. [2021-11-25 18:06:43,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2960 transitions. [2021-11-25 18:06:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:43,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:43,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:43,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-25 18:06:43,764 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash 598070599, now seen corresponding path program 1 times [2021-11-25 18:06:43,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:43,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353185388] [2021-11-25 18:06:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:43,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:43,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353185388] [2021-11-25 18:06:43,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353185388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:43,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:43,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:43,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461951373] [2021-11-25 18:06:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:43,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:43,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:43,877 INFO L87 Difference]: Start difference. First operand 2168 states and 2960 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:47,903 INFO L93 Difference]: Finished difference Result 3658 states and 4985 transitions. [2021-11-25 18:06:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:06:47,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:47,906 INFO L225 Difference]: With dead ends: 3658 [2021-11-25 18:06:47,906 INFO L226 Difference]: Without dead ends: 3517 [2021-11-25 18:06:47,907 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 [2021-11-25 18:06:47,907 INFO L933 BasicCegarLoop]: 1678 mSDtfsCounter, 3913 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 5396 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 6694 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 5396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:47,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 6694 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 5396 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:06:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-25 18:06:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2168. [2021-11-25 18:06:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2132 states have (on average 1.3878986866791745) internal successors, (2959), 2167 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2959 transitions. [2021-11-25 18:06:48,606 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2959 transitions. Word has length 131 [2021-11-25 18:06:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:48,606 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 2959 transitions. [2021-11-25 18:06:48,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2959 transitions. [2021-11-25 18:06:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:48,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:48,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:48,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-25 18:06:48,608 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:48,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 637564222, now seen corresponding path program 1 times [2021-11-25 18:06:48,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:48,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686552695] [2021-11-25 18:06:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:48,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:48,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:48,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686552695] [2021-11-25 18:06:48,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686552695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:48,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:48,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:06:48,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001585491] [2021-11-25 18:06:48,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:48,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:06:48,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:06:48,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:06:48,815 INFO L87 Difference]: Start difference. First operand 2168 states and 2959 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:55,968 INFO L93 Difference]: Finished difference Result 4348 states and 5911 transitions. [2021-11-25 18:06:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:06:55,968 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:06:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:55,972 INFO L225 Difference]: With dead ends: 4348 [2021-11-25 18:06:55,972 INFO L226 Difference]: Without dead ends: 4207 [2021-11-25 18:06:55,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:06:55,973 INFO L933 BasicCegarLoop]: 1411 mSDtfsCounter, 10961 mSDsluCounter, 6156 mSDsCounter, 0 mSdLazyCounter, 6935 mSolverCounterSat, 1052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10961 SdHoareTripleChecker+Valid, 7553 SdHoareTripleChecker+Invalid, 7987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 6935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:55,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10961 Valid, 7553 Invalid, 7987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 6935 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:06:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-11-25 18:06:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 2172. [2021-11-25 18:06:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.3871722846441947) internal successors, (2963), 2171 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2963 transitions. [2021-11-25 18:06:56,745 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2963 transitions. Word has length 131 [2021-11-25 18:06:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:56,745 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2963 transitions. [2021-11-25 18:06:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:06:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2963 transitions. [2021-11-25 18:06:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:06:56,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:56,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:56,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-25 18:06:56,747 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:06:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -994292860, now seen corresponding path program 1 times [2021-11-25 18:06:56,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111548353] [2021-11-25 18:06:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:56,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:06:56,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:56,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111548353] [2021-11-25 18:06:56,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111548353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:56,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:56,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:06:56,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370312763] [2021-11-25 18:06:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:56,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:06:56,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:06:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:06:56,863 INFO L87 Difference]: Start difference. First operand 2172 states and 2963 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:01,244 INFO L93 Difference]: Finished difference Result 3577 states and 4837 transitions. [2021-11-25 18:07:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:07:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:01,248 INFO L225 Difference]: With dead ends: 3577 [2021-11-25 18:07:01,248 INFO L226 Difference]: Without dead ends: 3453 [2021-11-25 18:07:01,249 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 [2021-11-25 18:07:01,249 INFO L933 BasicCegarLoop]: 1226 mSDtfsCounter, 5712 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5712 SdHoareTripleChecker+Valid, 5848 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:01,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5712 Valid, 5848 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:07:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-11-25 18:07:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2172. [2021-11-25 18:07:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.3867041198501873) internal successors, (2962), 2171 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2962 transitions. [2021-11-25 18:07:02,019 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2962 transitions. Word has length 131 [2021-11-25 18:07:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:02,019 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2962 transitions. [2021-11-25 18:07:02,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2962 transitions. [2021-11-25 18:07:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:02,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:02,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:02,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-25 18:07:02,021 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1332834968, now seen corresponding path program 1 times [2021-11-25 18:07:02,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:02,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522092634] [2021-11-25 18:07:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:02,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:02,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:02,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522092634] [2021-11-25 18:07:02,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522092634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:02,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:02,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:02,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209697230] [2021-11-25 18:07:02,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:02,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:02,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:02,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:02,139 INFO L87 Difference]: Start difference. First operand 2172 states and 2962 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:06,461 INFO L93 Difference]: Finished difference Result 3577 states and 4836 transitions. [2021-11-25 18:07:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:06,464 INFO L225 Difference]: With dead ends: 3577 [2021-11-25 18:07:06,464 INFO L226 Difference]: Without dead ends: 3453 [2021-11-25 18:07:06,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:07:06,465 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 4524 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 4400 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 4566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:06,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4524 Valid, 4687 Invalid, 4566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 4400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:07:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-11-25 18:07:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2172. [2021-11-25 18:07:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.3862359550561798) internal successors, (2961), 2171 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2961 transitions. [2021-11-25 18:07:07,236 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2961 transitions. Word has length 131 [2021-11-25 18:07:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:07,236 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2961 transitions. [2021-11-25 18:07:07,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2961 transitions. [2021-11-25 18:07:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:07,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:07,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:07,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-25 18:07:07,239 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 854801783, now seen corresponding path program 1 times [2021-11-25 18:07:07,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:07,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916475274] [2021-11-25 18:07:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:07,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:07,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:07,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916475274] [2021-11-25 18:07:07,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916475274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:07,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:07,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:07,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063314633] [2021-11-25 18:07:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:07,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:07,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:07,347 INFO L87 Difference]: Start difference. First operand 2172 states and 2961 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:11,278 INFO L93 Difference]: Finished difference Result 3571 states and 4825 transitions. [2021-11-25 18:07:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:11,282 INFO L225 Difference]: With dead ends: 3571 [2021-11-25 18:07:11,282 INFO L226 Difference]: Without dead ends: 3453 [2021-11-25 18:07:11,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:07:11,283 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 4574 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:11,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4574 Valid, 4627 Invalid, 4464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:07:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-11-25 18:07:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2172. [2021-11-25 18:07:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2136 states have (on average 1.3857677902621723) internal successors, (2960), 2171 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2960 transitions. [2021-11-25 18:07:12,063 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2960 transitions. Word has length 131 [2021-11-25 18:07:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:12,063 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2960 transitions. [2021-11-25 18:07:12,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2960 transitions. [2021-11-25 18:07:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:12,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:12,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:12,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-25 18:07:12,066 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 354096885, now seen corresponding path program 1 times [2021-11-25 18:07:12,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:12,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467286330] [2021-11-25 18:07:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:12,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:12,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:12,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467286330] [2021-11-25 18:07:12,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467286330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:12,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:12,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:07:12,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327008174] [2021-11-25 18:07:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:12,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:07:12,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:07:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:07:12,231 INFO L87 Difference]: Start difference. First operand 2172 states and 2960 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:19,257 INFO L93 Difference]: Finished difference Result 4401 states and 5980 transitions. [2021-11-25 18:07:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:07:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:19,261 INFO L225 Difference]: With dead ends: 4401 [2021-11-25 18:07:19,261 INFO L226 Difference]: Without dead ends: 4241 [2021-11-25 18:07:19,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:07:19,262 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 11046 mSDsluCounter, 6075 mSDsCounter, 0 mSdLazyCounter, 6829 mSolverCounterSat, 1071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11046 SdHoareTripleChecker+Valid, 7451 SdHoareTripleChecker+Invalid, 7900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1071 IncrementalHoareTripleChecker+Valid, 6829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11046 Valid, 7451 Invalid, 7900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1071 Valid, 6829 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:07:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-25 18:07:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2180. [2021-11-25 18:07:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3843283582089552) internal successors, (2968), 2179 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2968 transitions. [2021-11-25 18:07:20,003 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2968 transitions. Word has length 131 [2021-11-25 18:07:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:20,004 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2968 transitions. [2021-11-25 18:07:20,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2968 transitions. [2021-11-25 18:07:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:20,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:20,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:20,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-25 18:07:20,006 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1277760197, now seen corresponding path program 1 times [2021-11-25 18:07:20,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:20,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453437862] [2021-11-25 18:07:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:20,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:20,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453437862] [2021-11-25 18:07:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453437862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:20,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:20,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506873440] [2021-11-25 18:07:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:20,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:20,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:20,117 INFO L87 Difference]: Start difference. First operand 2180 states and 2968 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:23,970 INFO L93 Difference]: Finished difference Result 3593 states and 4852 transitions. [2021-11-25 18:07:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:23,973 INFO L225 Difference]: With dead ends: 3593 [2021-11-25 18:07:23,973 INFO L226 Difference]: Without dead ends: 3461 [2021-11-25 18:07:23,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:07:23,974 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 6872 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 4283 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6872 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 4283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:23,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6872 Valid, 4617 Invalid, 4541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 4283 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:07:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-11-25 18:07:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2180. [2021-11-25 18:07:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3833955223880596) internal successors, (2966), 2179 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2966 transitions. [2021-11-25 18:07:24,718 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2966 transitions. Word has length 131 [2021-11-25 18:07:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:24,718 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2966 transitions. [2021-11-25 18:07:24,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2966 transitions. [2021-11-25 18:07:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:24,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:24,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:24,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-25 18:07:24,722 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1927417403, now seen corresponding path program 1 times [2021-11-25 18:07:24,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:24,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030265398] [2021-11-25 18:07:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:24,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:24,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:24,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030265398] [2021-11-25 18:07:24,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030265398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:24,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:24,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:24,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857736223] [2021-11-25 18:07:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:24,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:24,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:24,832 INFO L87 Difference]: Start difference. First operand 2180 states and 2966 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:28,963 INFO L93 Difference]: Finished difference Result 3589 states and 4846 transitions. [2021-11-25 18:07:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:07:28,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:28,967 INFO L225 Difference]: With dead ends: 3589 [2021-11-25 18:07:28,967 INFO L226 Difference]: Without dead ends: 3461 [2021-11-25 18:07:28,968 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 [2021-11-25 18:07:28,968 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 5701 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5701 SdHoareTripleChecker+Valid, 5738 SdHoareTripleChecker+Invalid, 5245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:28,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5701 Valid, 5738 Invalid, 5245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:07:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-11-25 18:07:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2180. [2021-11-25 18:07:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.382462686567164) internal successors, (2964), 2179 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2964 transitions. [2021-11-25 18:07:29,738 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2964 transitions. Word has length 131 [2021-11-25 18:07:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:29,739 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2964 transitions. [2021-11-25 18:07:29,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2964 transitions. [2021-11-25 18:07:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:29,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:29,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:29,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-25 18:07:29,741 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash -559902075, now seen corresponding path program 1 times [2021-11-25 18:07:29,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:29,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854001933] [2021-11-25 18:07:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:29,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:29,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854001933] [2021-11-25 18:07:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854001933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:29,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:29,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:29,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302369094] [2021-11-25 18:07:29,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:29,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:29,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:29,842 INFO L87 Difference]: Start difference. First operand 2180 states and 2964 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:33,924 INFO L93 Difference]: Finished difference Result 3671 states and 4992 transitions. [2021-11-25 18:07:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:33,927 INFO L225 Difference]: With dead ends: 3671 [2021-11-25 18:07:33,927 INFO L226 Difference]: Without dead ends: 3517 [2021-11-25 18:07:33,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:07:33,928 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 6169 mSDsluCounter, 4395 mSDsCounter, 0 mSdLazyCounter, 5066 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6169 SdHoareTripleChecker+Valid, 5738 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 5066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:33,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6169 Valid, 5738 Invalid, 5185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 5066 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:07:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-25 18:07:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2180. [2021-11-25 18:07:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2144 states have (on average 1.3815298507462686) internal successors, (2962), 2179 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2962 transitions. [2021-11-25 18:07:34,725 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2962 transitions. Word has length 131 [2021-11-25 18:07:34,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:34,725 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 2962 transitions. [2021-11-25 18:07:34,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2962 transitions. [2021-11-25 18:07:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:34,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:34,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:34,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-25 18:07:34,727 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 147248573, now seen corresponding path program 1 times [2021-11-25 18:07:34,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:34,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378702388] [2021-11-25 18:07:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:34,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:34,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378702388] [2021-11-25 18:07:34,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378702388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:34,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:34,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:07:34,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135156381] [2021-11-25 18:07:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:34,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:07:34,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:07:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:07:34,925 INFO L87 Difference]: Start difference. First operand 2180 states and 2962 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:42,040 INFO L93 Difference]: Finished difference Result 4389 states and 5956 transitions. [2021-11-25 18:07:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:07:42,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:42,044 INFO L225 Difference]: With dead ends: 4389 [2021-11-25 18:07:42,044 INFO L226 Difference]: Without dead ends: 4235 [2021-11-25 18:07:42,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:07:42,045 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 10545 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 6907 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10545 SdHoareTripleChecker+Valid, 7478 SdHoareTripleChecker+Invalid, 7969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 6907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:42,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10545 Valid, 7478 Invalid, 7969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 6907 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:07:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2021-11-25 18:07:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 2188. [2021-11-25 18:07:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2152 states have (on average 1.3801115241635689) internal successors, (2970), 2187 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2970 transitions. [2021-11-25 18:07:42,840 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2970 transitions. Word has length 131 [2021-11-25 18:07:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:42,841 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 2970 transitions. [2021-11-25 18:07:42,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2970 transitions. [2021-11-25 18:07:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:42,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:42,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:42,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-25 18:07:42,843 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash 778210777, now seen corresponding path program 1 times [2021-11-25 18:07:42,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:42,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654290254] [2021-11-25 18:07:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:42,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:42,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654290254] [2021-11-25 18:07:42,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654290254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:42,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:42,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:42,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118665866] [2021-11-25 18:07:42,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:42,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:42,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:42,942 INFO L87 Difference]: Start difference. First operand 2188 states and 2970 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:46,788 INFO L93 Difference]: Finished difference Result 3603 states and 4855 transitions. [2021-11-25 18:07:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:46,791 INFO L225 Difference]: With dead ends: 3603 [2021-11-25 18:07:46,791 INFO L226 Difference]: Without dead ends: 3469 [2021-11-25 18:07:46,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:07:46,792 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 4557 mSDsluCounter, 3570 mSDsCounter, 0 mSdLazyCounter, 4324 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4557 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 4324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:46,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4557 Valid, 4670 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 4324 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:07:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2021-11-25 18:07:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 2188. [2021-11-25 18:07:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2152 states have (on average 1.379182156133829) internal successors, (2968), 2187 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2968 transitions. [2021-11-25 18:07:47,553 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2968 transitions. Word has length 131 [2021-11-25 18:07:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:47,553 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 2968 transitions. [2021-11-25 18:07:47,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2968 transitions. [2021-11-25 18:07:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:47,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:47,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:47,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-25 18:07:47,555 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1195714189, now seen corresponding path program 1 times [2021-11-25 18:07:47,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:47,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130522296] [2021-11-25 18:07:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:47,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:47,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:47,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130522296] [2021-11-25 18:07:47,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130522296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:47,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:47,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:07:47,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637782748] [2021-11-25 18:07:47,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:47,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:07:47,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:07:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:07:47,715 INFO L87 Difference]: Start difference. First operand 2188 states and 2968 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:54,521 INFO L93 Difference]: Finished difference Result 4399 states and 5956 transitions. [2021-11-25 18:07:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:07:54,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:54,525 INFO L225 Difference]: With dead ends: 4399 [2021-11-25 18:07:54,525 INFO L226 Difference]: Without dead ends: 4239 [2021-11-25 18:07:54,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:07:54,526 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 10743 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 5585 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10743 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 6669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 5585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:54,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10743 Valid, 6088 Invalid, 6669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 5585 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:07:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-25 18:07:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 2196. [2021-11-25 18:07:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2160 states have (on average 1.3777777777777778) internal successors, (2976), 2195 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2976 transitions. [2021-11-25 18:07:55,338 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2976 transitions. Word has length 131 [2021-11-25 18:07:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:55,338 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 2976 transitions. [2021-11-25 18:07:55,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2976 transitions. [2021-11-25 18:07:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:07:55,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:55,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:55,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-25 18:07:55,340 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:07:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash 926033482, now seen corresponding path program 1 times [2021-11-25 18:07:55,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:55,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948080954] [2021-11-25 18:07:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:55,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:07:55,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948080954] [2021-11-25 18:07:55,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948080954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:55,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:55,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:07:55,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346301578] [2021-11-25 18:07:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:55,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:07:55,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:07:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:55,471 INFO L87 Difference]: Start difference. First operand 2196 states and 2976 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:07:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:59,592 INFO L93 Difference]: Finished difference Result 3677 states and 4987 transitions. [2021-11-25 18:07:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:07:59,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:07:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:59,596 INFO L225 Difference]: With dead ends: 3677 [2021-11-25 18:07:59,596 INFO L226 Difference]: Without dead ends: 3517 [2021-11-25 18:07:59,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:07:59,597 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 6524 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6524 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 4803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:59,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6524 Valid, 5391 Invalid, 4803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:07:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-25 18:08:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2196. [2021-11-25 18:08:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2160 states have (on average 1.3768518518518518) internal successors, (2974), 2195 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2974 transitions. [2021-11-25 18:08:00,405 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2974 transitions. Word has length 131 [2021-11-25 18:08:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:00,405 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 2974 transitions. [2021-11-25 18:08:00,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2974 transitions. [2021-11-25 18:08:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:00,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:00,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:00,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-25 18:08:00,408 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:00,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -705823600, now seen corresponding path program 1 times [2021-11-25 18:08:00,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:00,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296608753] [2021-11-25 18:08:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:00,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:00,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:00,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296608753] [2021-11-25 18:08:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296608753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:00,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:00,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:00,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778325146] [2021-11-25 18:08:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:00,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:00,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:00,518 INFO L87 Difference]: Start difference. First operand 2196 states and 2974 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:04,810 INFO L93 Difference]: Finished difference Result 3609 states and 4858 transitions. [2021-11-25 18:08:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:08:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:04,814 INFO L225 Difference]: With dead ends: 3609 [2021-11-25 18:08:04,814 INFO L226 Difference]: Without dead ends: 3477 [2021-11-25 18:08:04,815 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 [2021-11-25 18:08:04,816 INFO L933 BasicCegarLoop]: 1234 mSDtfsCounter, 5693 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5693 SdHoareTripleChecker+Valid, 5881 SdHoareTripleChecker+Invalid, 5313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:04,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5693 Valid, 5881 Invalid, 5313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5135 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:08:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-25 18:08:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2196. [2021-11-25 18:08:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2160 states have (on average 1.375925925925926) internal successors, (2972), 2195 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2972 transitions. [2021-11-25 18:08:05,639 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2972 transitions. Word has length 131 [2021-11-25 18:08:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:05,639 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 2972 transitions. [2021-11-25 18:08:05,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2972 transitions. [2021-11-25 18:08:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:05,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:05,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:05,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-25 18:08:05,641 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:05,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1186023049, now seen corresponding path program 1 times [2021-11-25 18:08:05,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:05,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682021346] [2021-11-25 18:08:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:05,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:05,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682021346] [2021-11-25 18:08:05,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682021346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:05,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:05,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:08:05,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733639968] [2021-11-25 18:08:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:05,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:08:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:08:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:08:05,844 INFO L87 Difference]: Start difference. First operand 2196 states and 2972 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:12,848 INFO L93 Difference]: Finished difference Result 4259 states and 5730 transitions. [2021-11-25 18:08:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:08:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:12,851 INFO L225 Difference]: With dead ends: 4259 [2021-11-25 18:08:12,852 INFO L226 Difference]: Without dead ends: 4125 [2021-11-25 18:08:12,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:08:12,852 INFO L933 BasicCegarLoop]: 1165 mSDtfsCounter, 11107 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 5527 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11107 SdHoareTripleChecker+Valid, 5696 SdHoareTripleChecker+Invalid, 6947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 5527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:12,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11107 Valid, 5696 Invalid, 6947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 5527 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:08:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-11-25 18:08:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 2204. [2021-11-25 18:08:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2168 states have (on average 1.3745387453874538) internal successors, (2980), 2203 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2980 transitions. [2021-11-25 18:08:13,710 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2980 transitions. Word has length 131 [2021-11-25 18:08:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:13,710 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 2980 transitions. [2021-11-25 18:08:13,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2980 transitions. [2021-11-25 18:08:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:13,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:13,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:13,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-25 18:08:13,713 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -666329977, now seen corresponding path program 1 times [2021-11-25 18:08:13,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:13,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124415457] [2021-11-25 18:08:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:13,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:13,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124415457] [2021-11-25 18:08:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124415457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:13,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248608494] [2021-11-25 18:08:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:13,821 INFO L87 Difference]: Start difference. First operand 2204 states and 2980 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:17,932 INFO L93 Difference]: Finished difference Result 3609 states and 4854 transitions. [2021-11-25 18:08:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:08:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:17,935 INFO L225 Difference]: With dead ends: 3609 [2021-11-25 18:08:17,935 INFO L226 Difference]: Without dead ends: 3477 [2021-11-25 18:08:17,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:08:17,936 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 6659 mSDsluCounter, 3664 mSDsCounter, 0 mSdLazyCounter, 4471 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6659 SdHoareTripleChecker+Valid, 4795 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 4471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:17,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6659 Valid, 4795 Invalid, 4722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 4471 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:08:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-25 18:08:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2204. [2021-11-25 18:08:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2168 states have (on average 1.3736162361623616) internal successors, (2978), 2203 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2978 transitions. [2021-11-25 18:08:18,790 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2978 transitions. Word has length 131 [2021-11-25 18:08:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:18,791 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 2978 transitions. [2021-11-25 18:08:18,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2978 transitions. [2021-11-25 18:08:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:18,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:18,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:18,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-25 18:08:18,793 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1004872085, now seen corresponding path program 1 times [2021-11-25 18:08:18,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:18,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812270724] [2021-11-25 18:08:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:18,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:18,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:18,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812270724] [2021-11-25 18:08:18,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812270724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:18,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:18,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:08:18,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117253263] [2021-11-25 18:08:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:18,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:08:18,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:08:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:08:18,995 INFO L87 Difference]: Start difference. First operand 2204 states and 2978 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:26,174 INFO L93 Difference]: Finished difference Result 4257 states and 5726 transitions. [2021-11-25 18:08:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:08:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:26,178 INFO L225 Difference]: With dead ends: 4257 [2021-11-25 18:08:26,178 INFO L226 Difference]: Without dead ends: 4125 [2021-11-25 18:08:26,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:08:26,179 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 11065 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 6051 mSolverCounterSat, 1426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11065 SdHoareTripleChecker+Valid, 6273 SdHoareTripleChecker+Invalid, 7477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1426 IncrementalHoareTripleChecker+Valid, 6051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:26,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11065 Valid, 6273 Invalid, 7477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1426 Valid, 6051 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 18:08:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-11-25 18:08:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 2212. [2021-11-25 18:08:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.3722426470588236) internal successors, (2986), 2211 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2986 transitions. [2021-11-25 18:08:27,017 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2986 transitions. Word has length 131 [2021-11-25 18:08:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:27,018 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2986 transitions. [2021-11-25 18:08:27,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2986 transitions. [2021-11-25 18:08:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:27,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:27,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:27,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-25 18:08:27,037 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1812338028, now seen corresponding path program 1 times [2021-11-25 18:08:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:27,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868488690] [2021-11-25 18:08:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:27,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:27,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:27,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868488690] [2021-11-25 18:08:27,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868488690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:27,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:27,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:27,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534486791] [2021-11-25 18:08:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:27,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:27,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:27,148 INFO L87 Difference]: Start difference. First operand 2212 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:31,215 INFO L93 Difference]: Finished difference Result 3605 states and 4846 transitions. [2021-11-25 18:08:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:08:31,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:31,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:31,218 INFO L225 Difference]: With dead ends: 3605 [2021-11-25 18:08:31,218 INFO L226 Difference]: Without dead ends: 3477 [2021-11-25 18:08:31,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:08:31,219 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 6775 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 4313 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6775 SdHoareTripleChecker+Valid, 4694 SdHoareTripleChecker+Invalid, 4567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:31,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6775 Valid, 4694 Invalid, 4567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4313 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:08:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-25 18:08:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2212. [2021-11-25 18:08:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.3713235294117647) internal successors, (2984), 2211 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2984 transitions. [2021-11-25 18:08:32,067 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2984 transitions. Word has length 131 [2021-11-25 18:08:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:32,067 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2984 transitions. [2021-11-25 18:08:32,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2984 transitions. [2021-11-25 18:08:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:32,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:32,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:32,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-25 18:08:32,069 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash 294518439, now seen corresponding path program 1 times [2021-11-25 18:08:32,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458324945] [2021-11-25 18:08:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:32,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458324945] [2021-11-25 18:08:32,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458324945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:32,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:32,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:32,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363017084] [2021-11-25 18:08:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:32,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:32,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:32,205 INFO L87 Difference]: Start difference. First operand 2212 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:36,333 INFO L93 Difference]: Finished difference Result 3467 states and 4599 transitions. [2021-11-25 18:08:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:08:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:36,336 INFO L225 Difference]: With dead ends: 3467 [2021-11-25 18:08:36,336 INFO L226 Difference]: Without dead ends: 3347 [2021-11-25 18:08:36,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:08:36,337 INFO L933 BasicCegarLoop]: 1063 mSDtfsCounter, 4567 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 4643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:36,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4567 Valid, 4303 Invalid, 4643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4326 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:08:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-11-25 18:08:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2212. [2021-11-25 18:08:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.3704044117647058) internal successors, (2982), 2211 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2982 transitions. [2021-11-25 18:08:37,183 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2982 transitions. Word has length 131 [2021-11-25 18:08:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:37,183 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2982 transitions. [2021-11-25 18:08:37,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2982 transitions. [2021-11-25 18:08:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:37,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:37,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:37,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-25 18:08:37,185 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -970555197, now seen corresponding path program 1 times [2021-11-25 18:08:37,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:37,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864180055] [2021-11-25 18:08:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:37,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:37,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864180055] [2021-11-25 18:08:37,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864180055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:37,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:37,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:37,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294657936] [2021-11-25 18:08:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:37,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:37,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:37,315 INFO L87 Difference]: Start difference. First operand 2212 states and 2982 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:41,534 INFO L93 Difference]: Finished difference Result 3705 states and 5003 transitions. [2021-11-25 18:08:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:08:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:41,537 INFO L225 Difference]: With dead ends: 3705 [2021-11-25 18:08:41,537 INFO L226 Difference]: Without dead ends: 3541 [2021-11-25 18:08:41,538 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 [2021-11-25 18:08:41,538 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 4009 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 4903 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4009 SdHoareTripleChecker+Valid, 6136 SdHoareTripleChecker+Invalid, 4971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:41,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4009 Valid, 6136 Invalid, 4971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4903 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:08:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-11-25 18:08:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2212. [2021-11-25 18:08:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.369485294117647) internal successors, (2980), 2211 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2980 transitions. [2021-11-25 18:08:42,391 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2980 transitions. Word has length 131 [2021-11-25 18:08:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:42,392 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2980 transitions. [2021-11-25 18:08:42,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2980 transitions. [2021-11-25 18:08:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:42,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:42,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:42,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-25 18:08:42,394 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1337338643, now seen corresponding path program 1 times [2021-11-25 18:08:42,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:42,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441962051] [2021-11-25 18:08:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:42,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:42,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:42,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441962051] [2021-11-25 18:08:42,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441962051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:42,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:42,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:42,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099284606] [2021-11-25 18:08:42,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:42,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:42,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:42,495 INFO L87 Difference]: Start difference. First operand 2212 states and 2980 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:46,620 INFO L93 Difference]: Finished difference Result 3609 states and 4842 transitions. [2021-11-25 18:08:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:08:46,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:46,624 INFO L225 Difference]: With dead ends: 3609 [2021-11-25 18:08:46,624 INFO L226 Difference]: Without dead ends: 3477 [2021-11-25 18:08:46,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:08:46,625 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 6693 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 4351 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6693 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 4603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:46,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6693 Valid, 4785 Invalid, 4603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 4351 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:08:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-25 18:08:47,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2212. [2021-11-25 18:08:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.3685661764705883) internal successors, (2978), 2211 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2978 transitions. [2021-11-25 18:08:47,487 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2978 transitions. Word has length 131 [2021-11-25 18:08:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:47,488 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2978 transitions. [2021-11-25 18:08:47,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2978 transitions. [2021-11-25 18:08:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:47,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:47,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:47,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-25 18:08:47,490 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 145807992, now seen corresponding path program 1 times [2021-11-25 18:08:47,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:47,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940142680] [2021-11-25 18:08:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:47,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:47,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:47,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940142680] [2021-11-25 18:08:47,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940142680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:47,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:47,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:08:47,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357232476] [2021-11-25 18:08:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:47,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:08:47,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:08:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:08:47,598 INFO L87 Difference]: Start difference. First operand 2212 states and 2978 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:52,054 INFO L93 Difference]: Finished difference Result 3615 states and 4847 transitions. [2021-11-25 18:08:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:08:52,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:08:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:52,057 INFO L225 Difference]: With dead ends: 3615 [2021-11-25 18:08:52,057 INFO L226 Difference]: Without dead ends: 3477 [2021-11-25 18:08:52,057 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 [2021-11-25 18:08:52,058 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 5678 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5678 SdHoareTripleChecker+Valid, 5913 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:52,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5678 Valid, 5913 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5100 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:08:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-11-25 18:08:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2212. [2021-11-25 18:08:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2176 states have (on average 1.3676470588235294) internal successors, (2976), 2211 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2976 transitions. [2021-11-25 18:08:52,922 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2976 transitions. Word has length 131 [2021-11-25 18:08:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:52,922 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2976 transitions. [2021-11-25 18:08:52,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:08:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2976 transitions. [2021-11-25 18:08:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:08:52,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:52,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:52,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-25 18:08:52,924 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:08:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash 554653220, now seen corresponding path program 1 times [2021-11-25 18:08:52,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:52,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624657711] [2021-11-25 18:08:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:52,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:08:53,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:53,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624657711] [2021-11-25 18:08:53,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624657711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:53,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:53,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:08:53,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237713043] [2021-11-25 18:08:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:53,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:08:53,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:08:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:08:53,101 INFO L87 Difference]: Start difference. First operand 2212 states and 2976 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:00,419 INFO L93 Difference]: Finished difference Result 4449 states and 5998 transitions. [2021-11-25 18:09:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:09:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:00,422 INFO L225 Difference]: With dead ends: 4449 [2021-11-25 18:09:00,423 INFO L226 Difference]: Without dead ends: 4277 [2021-11-25 18:09:00,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:09:00,423 INFO L933 BasicCegarLoop]: 1356 mSDtfsCounter, 10835 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 5923 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10835 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 7022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 5923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:00,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10835 Valid, 6475 Invalid, 7022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 5923 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:09:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-11-25 18:09:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2220. [2021-11-25 18:09:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2184 states have (on average 1.3663003663003663) internal successors, (2984), 2219 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2984 transitions. [2021-11-25 18:09:01,305 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2984 transitions. Word has length 131 [2021-11-25 18:09:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:01,305 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 2984 transitions. [2021-11-25 18:09:01,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2984 transitions. [2021-11-25 18:09:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:01,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:01,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:01,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-25 18:09:01,309 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1636387128, now seen corresponding path program 1 times [2021-11-25 18:09:01,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:01,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067801112] [2021-11-25 18:09:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:01,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:01,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:01,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067801112] [2021-11-25 18:09:01,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067801112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:01,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:01,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:01,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039282323] [2021-11-25 18:09:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:01,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:01,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:01,436 INFO L87 Difference]: Start difference. First operand 2220 states and 2984 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:05,636 INFO L93 Difference]: Finished difference Result 3617 states and 4846 transitions. [2021-11-25 18:09:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:09:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:05,639 INFO L225 Difference]: With dead ends: 3617 [2021-11-25 18:09:05,639 INFO L226 Difference]: Without dead ends: 3485 [2021-11-25 18:09:05,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:05,641 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 4426 mSDsluCounter, 3687 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 4835 SdHoareTripleChecker+Invalid, 4607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:05,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4426 Valid, 4835 Invalid, 4607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:09:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-25 18:09:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2220. [2021-11-25 18:09:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2184 states have (on average 1.3653846153846154) internal successors, (2982), 2219 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2982 transitions. [2021-11-25 18:09:06,519 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2982 transitions. Word has length 131 [2021-11-25 18:09:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:06,519 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 2982 transitions. [2021-11-25 18:09:06,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2982 transitions. [2021-11-25 18:09:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:06,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:06,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:06,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-25 18:09:06,521 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -857071104, now seen corresponding path program 1 times [2021-11-25 18:09:06,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:06,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727136924] [2021-11-25 18:09:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:06,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:06,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727136924] [2021-11-25 18:09:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727136924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:06,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:06,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646644329] [2021-11-25 18:09:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:06,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:06,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:06,659 INFO L87 Difference]: Start difference. First operand 2220 states and 2982 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:11,122 INFO L93 Difference]: Finished difference Result 3605 states and 4824 transitions. [2021-11-25 18:09:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:09:11,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:11,125 INFO L225 Difference]: With dead ends: 3605 [2021-11-25 18:09:11,125 INFO L226 Difference]: Without dead ends: 3485 [2021-11-25 18:09:11,126 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 [2021-11-25 18:09:11,126 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 5652 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 5093 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5652 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 5271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:11,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5652 Valid, 5911 Invalid, 5271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5093 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:09:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-25 18:09:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2220. [2021-11-25 18:09:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2184 states have (on average 1.3644688644688645) internal successors, (2980), 2219 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2980 transitions. [2021-11-25 18:09:12,040 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2980 transitions. Word has length 131 [2021-11-25 18:09:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:12,040 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 2980 transitions. [2021-11-25 18:09:12,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2980 transitions. [2021-11-25 18:09:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:12,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:12,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:12,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-25 18:09:12,042 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1297845020, now seen corresponding path program 1 times [2021-11-25 18:09:12,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:12,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379278822] [2021-11-25 18:09:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:12,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:12,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379278822] [2021-11-25 18:09:12,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379278822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:12,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:12,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:12,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557143975] [2021-11-25 18:09:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:12,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:12,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:12,151 INFO L87 Difference]: Start difference. First operand 2220 states and 2980 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:16,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:16,625 INFO L93 Difference]: Finished difference Result 3617 states and 4840 transitions. [2021-11-25 18:09:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:09:16,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:16,628 INFO L225 Difference]: With dead ends: 3617 [2021-11-25 18:09:16,628 INFO L226 Difference]: Without dead ends: 3485 [2021-11-25 18:09:16,628 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 [2021-11-25 18:09:16,629 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 5657 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 5086 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5657 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 5264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 5086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:16,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5657 Valid, 5905 Invalid, 5264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 5086 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:09:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-25 18:09:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2220. [2021-11-25 18:09:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2184 states have (on average 1.3635531135531136) internal successors, (2978), 2219 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2978 transitions. [2021-11-25 18:09:17,552 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2978 transitions. Word has length 131 [2021-11-25 18:09:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:17,552 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 2978 transitions. [2021-11-25 18:09:17,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2978 transitions. [2021-11-25 18:09:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:17,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:17,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:17,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-25 18:09:17,554 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash 334012062, now seen corresponding path program 1 times [2021-11-25 18:09:17,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:17,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146462531] [2021-11-25 18:09:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:17,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:17,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:17,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146462531] [2021-11-25 18:09:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146462531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:17,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:17,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:09:17,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356917444] [2021-11-25 18:09:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:17,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:09:17,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:09:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:09:17,713 INFO L87 Difference]: Start difference. First operand 2220 states and 2978 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:25,242 INFO L93 Difference]: Finished difference Result 4433 states and 5968 transitions. [2021-11-25 18:09:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:09:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:25,245 INFO L225 Difference]: With dead ends: 4433 [2021-11-25 18:09:25,246 INFO L226 Difference]: Without dead ends: 4269 [2021-11-25 18:09:25,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:09:25,246 INFO L933 BasicCegarLoop]: 1336 mSDtfsCounter, 10468 mSDsluCounter, 5150 mSDsCounter, 0 mSdLazyCounter, 6018 mSolverCounterSat, 1087 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10468 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 7105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 6018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:25,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10468 Valid, 6471 Invalid, 7105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 6018 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:09:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-11-25 18:09:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 2228. [2021-11-25 18:09:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2192 states have (on average 1.3622262773722629) internal successors, (2986), 2227 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2986 transitions. [2021-11-25 18:09:26,191 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2986 transitions. Word has length 131 [2021-11-25 18:09:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:26,191 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 2986 transitions. [2021-11-25 18:09:26,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2986 transitions. [2021-11-25 18:09:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:26,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:26,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-25 18:09:26,193 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash -461144455, now seen corresponding path program 1 times [2021-11-25 18:09:26,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565567869] [2021-11-25 18:09:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:26,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:26,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565567869] [2021-11-25 18:09:26,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565567869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:26,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:26,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:26,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952334087] [2021-11-25 18:09:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:26,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:26,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:26,291 INFO L87 Difference]: Start difference. First operand 2228 states and 2986 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:30,490 INFO L93 Difference]: Finished difference Result 3631 states and 4853 transitions. [2021-11-25 18:09:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:09:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:30,494 INFO L225 Difference]: With dead ends: 3631 [2021-11-25 18:09:30,494 INFO L226 Difference]: Without dead ends: 3493 [2021-11-25 18:09:30,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:30,495 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 4493 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 4760 SdHoareTripleChecker+Invalid, 4487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:30,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4493 Valid, 4760 Invalid, 4487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:09:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2021-11-25 18:09:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2228. [2021-11-25 18:09:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2192 states have (on average 1.3613138686131387) internal successors, (2984), 2227 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2984 transitions. [2021-11-25 18:09:31,434 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2984 transitions. Word has length 131 [2021-11-25 18:09:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:31,434 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 2984 transitions. [2021-11-25 18:09:31,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2984 transitions. [2021-11-25 18:09:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:31,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:31,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:31,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-25 18:09:31,436 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1859897875, now seen corresponding path program 1 times [2021-11-25 18:09:31,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:31,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460656636] [2021-11-25 18:09:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:31,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:31,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:31,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460656636] [2021-11-25 18:09:31,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460656636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:31,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:31,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:09:31,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096756768] [2021-11-25 18:09:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:31,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:09:31,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:09:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:09:31,602 INFO L87 Difference]: Start difference. First operand 2228 states and 2984 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:38,944 INFO L93 Difference]: Finished difference Result 4449 states and 5982 transitions. [2021-11-25 18:09:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:09:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:38,959 INFO L225 Difference]: With dead ends: 4449 [2021-11-25 18:09:38,959 INFO L226 Difference]: Without dead ends: 4277 [2021-11-25 18:09:38,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:09:38,960 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 11101 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 5324 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11101 SdHoareTripleChecker+Valid, 5842 SdHoareTripleChecker+Invalid, 6452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 5324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:38,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11101 Valid, 5842 Invalid, 6452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 5324 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:09:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-11-25 18:09:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2236. [2021-11-25 18:09:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2200 states have (on average 1.36) internal successors, (2992), 2235 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2992 transitions. [2021-11-25 18:09:39,916 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2992 transitions. Word has length 131 [2021-11-25 18:09:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:39,916 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 2992 transitions. [2021-11-25 18:09:39,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2992 transitions. [2021-11-25 18:09:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:39,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:39,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:39,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-25 18:09:39,918 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -93042280, now seen corresponding path program 1 times [2021-11-25 18:09:39,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610544146] [2021-11-25 18:09:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:39,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:40,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610544146] [2021-11-25 18:09:40,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610544146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:40,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:40,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:40,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583944219] [2021-11-25 18:09:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:40,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:40,017 INFO L87 Difference]: Start difference. First operand 2236 states and 2992 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:44,409 INFO L93 Difference]: Finished difference Result 3639 states and 4859 transitions. [2021-11-25 18:09:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:09:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:44,413 INFO L225 Difference]: With dead ends: 3639 [2021-11-25 18:09:44,413 INFO L226 Difference]: Without dead ends: 3501 [2021-11-25 18:09:44,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:44,414 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 4430 mSDsluCounter, 3669 mSDsCounter, 0 mSdLazyCounter, 4415 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 4578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:44,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 4817 Invalid, 4578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4415 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:09:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-25 18:09:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2236. [2021-11-25 18:09:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2200 states have (on average 1.3590909090909091) internal successors, (2990), 2235 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2990 transitions. [2021-11-25 18:09:45,340 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2990 transitions. Word has length 131 [2021-11-25 18:09:45,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:45,341 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 2990 transitions. [2021-11-25 18:09:45,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2990 transitions. [2021-11-25 18:09:45,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:45,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:45,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:45,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-25 18:09:45,343 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:45,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1943811471, now seen corresponding path program 1 times [2021-11-25 18:09:45,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:45,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531305957] [2021-11-25 18:09:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:45,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:45,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:45,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531305957] [2021-11-25 18:09:45,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531305957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:45,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:45,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:09:45,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600876349] [2021-11-25 18:09:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:45,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:09:45,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:09:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:09:45,442 INFO L87 Difference]: Start difference. First operand 2236 states and 2990 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:49,777 INFO L93 Difference]: Finished difference Result 3633 states and 4848 transitions. [2021-11-25 18:09:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:09:49,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:49,780 INFO L225 Difference]: With dead ends: 3633 [2021-11-25 18:09:49,781 INFO L226 Difference]: Without dead ends: 3501 [2021-11-25 18:09:49,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:49,781 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 6680 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 4313 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6680 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 4565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:49,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6680 Valid, 4769 Invalid, 4565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 4313 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:09:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-25 18:09:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2236. [2021-11-25 18:09:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2200 states have (on average 1.3581818181818182) internal successors, (2988), 2235 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2988 transitions. [2021-11-25 18:09:50,730 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2988 transitions. Word has length 131 [2021-11-25 18:09:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:50,731 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 2988 transitions. [2021-11-25 18:09:50,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2988 transitions. [2021-11-25 18:09:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:09:50,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:50,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:50,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-25 18:09:50,733 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:09:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash -151652000, now seen corresponding path program 1 times [2021-11-25 18:09:50,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:50,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470971565] [2021-11-25 18:09:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:50,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:09:50,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:50,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470971565] [2021-11-25 18:09:50,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470971565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:50,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:50,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:09:50,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935901514] [2021-11-25 18:09:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:50,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:09:50,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:09:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:09:50,910 INFO L87 Difference]: Start difference. First operand 2236 states and 2988 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:09:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:59,293 INFO L93 Difference]: Finished difference Result 4773 states and 6394 transitions. [2021-11-25 18:09:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:09:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:09:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:59,297 INFO L225 Difference]: With dead ends: 4773 [2021-11-25 18:09:59,297 INFO L226 Difference]: Without dead ends: 4527 [2021-11-25 18:09:59,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 18:09:59,298 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 10136 mSDsluCounter, 6861 mSDsCounter, 0 mSdLazyCounter, 7378 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10136 SdHoareTripleChecker+Valid, 8470 SdHoareTripleChecker+Invalid, 8249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 7378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:59,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10136 Valid, 8470 Invalid, 8249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 7378 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:09:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2021-11-25 18:10:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 2244. [2021-11-25 18:10:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2208 states have (on average 1.3568840579710144) internal successors, (2996), 2243 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2996 transitions. [2021-11-25 18:10:00,301 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2996 transitions. Word has length 131 [2021-11-25 18:10:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:00,301 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2996 transitions. [2021-11-25 18:10:00,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2996 transitions. [2021-11-25 18:10:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:10:00,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:00,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:00,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-25 18:10:00,303 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1912053016, now seen corresponding path program 1 times [2021-11-25 18:10:00,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:00,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016051808] [2021-11-25 18:10:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:00,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:00,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016051808] [2021-11-25 18:10:00,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016051808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:00,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:00,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:10:00,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337092848] [2021-11-25 18:10:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:00,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:10:00,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:10:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:10:00,407 INFO L87 Difference]: Start difference. First operand 2244 states and 2996 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:04,978 INFO L93 Difference]: Finished difference Result 3503 states and 4616 transitions. [2021-11-25 18:10:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:10:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:10:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:04,981 INFO L225 Difference]: With dead ends: 3503 [2021-11-25 18:10:04,981 INFO L226 Difference]: Without dead ends: 3379 [2021-11-25 18:10:04,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:10:04,982 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 4497 mSDsluCounter, 3356 mSDsCounter, 0 mSdLazyCounter, 4300 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 4300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:04,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 4449 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 4300 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:10:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2021-11-25 18:10:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 2244. [2021-11-25 18:10:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2208 states have (on average 1.3559782608695652) internal successors, (2994), 2243 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2994 transitions. [2021-11-25 18:10:05,977 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2994 transitions. Word has length 131 [2021-11-25 18:10:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:05,977 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2994 transitions. [2021-11-25 18:10:05,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2994 transitions. [2021-11-25 18:10:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:10:05,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:05,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:05,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-25 18:10:05,980 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -470717178, now seen corresponding path program 1 times [2021-11-25 18:10:05,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647017217] [2021-11-25 18:10:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:05,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:06,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:06,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647017217] [2021-11-25 18:10:06,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647017217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:06,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:06,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:10:06,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363891011] [2021-11-25 18:10:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:06,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:10:06,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:10:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:10:06,090 INFO L87 Difference]: Start difference. First operand 2244 states and 2994 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:10,515 INFO L93 Difference]: Finished difference Result 3721 states and 4989 transitions. [2021-11-25 18:10:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:10:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:10:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:10,518 INFO L225 Difference]: With dead ends: 3721 [2021-11-25 18:10:10,518 INFO L226 Difference]: Without dead ends: 3549 [2021-11-25 18:10:10,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:10:10,519 INFO L933 BasicCegarLoop]: 1190 mSDtfsCounter, 6804 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6804 SdHoareTripleChecker+Valid, 5086 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:10,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6804 Valid, 5086 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:10:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-11-25 18:10:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 2244. [2021-11-25 18:10:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2208 states have (on average 1.355072463768116) internal successors, (2992), 2243 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2992 transitions. [2021-11-25 18:10:11,506 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2992 transitions. Word has length 131 [2021-11-25 18:10:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:11,506 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2992 transitions. [2021-11-25 18:10:11,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2992 transitions. [2021-11-25 18:10:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:10:11,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:11,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:11,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-25 18:10:11,508 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:11,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1503207788, now seen corresponding path program 1 times [2021-11-25 18:10:11,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:11,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461804070] [2021-11-25 18:10:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:11,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:11,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461804070] [2021-11-25 18:10:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461804070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:11,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:11,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:10:11,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493745355] [2021-11-25 18:10:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:11,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:10:11,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:10:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:10:11,606 INFO L87 Difference]: Start difference. First operand 2244 states and 2992 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:16,004 INFO L93 Difference]: Finished difference Result 3647 states and 4855 transitions. [2021-11-25 18:10:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:10:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-25 18:10:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:16,007 INFO L225 Difference]: With dead ends: 3647 [2021-11-25 18:10:16,007 INFO L226 Difference]: Without dead ends: 3509 [2021-11-25 18:10:16,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:10:16,007 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 4440 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 4520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:16,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4440 Valid, 4864 Invalid, 4520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 4356 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:10:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2021-11-25 18:10:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2244. [2021-11-25 18:10:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2208 states have (on average 1.3541666666666667) internal successors, (2990), 2243 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2990 transitions. [2021-11-25 18:10:16,976 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2990 transitions. Word has length 131 [2021-11-25 18:10:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:16,976 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 2990 transitions. [2021-11-25 18:10:16,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2990 transitions. [2021-11-25 18:10:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 18:10:16,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:16,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:16,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-25 18:10:16,978 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash -685118347, now seen corresponding path program 1 times [2021-11-25 18:10:16,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:16,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788854395] [2021-11-25 18:10:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:16,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:17,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:17,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788854395] [2021-11-25 18:10:17,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788854395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:17,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:17,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:10:17,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869582745] [2021-11-25 18:10:17,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:17,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:10:17,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:10:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:10:17,077 INFO L87 Difference]: Start difference. First operand 2244 states and 2990 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:21,604 INFO L93 Difference]: Finished difference Result 3690 states and 4945 transitions. [2021-11-25 18:10:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:10:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-25 18:10:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:21,607 INFO L225 Difference]: With dead ends: 3690 [2021-11-25 18:10:21,607 INFO L226 Difference]: Without dead ends: 3549 [2021-11-25 18:10:21,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:10:21,608 INFO L933 BasicCegarLoop]: 1260 mSDtfsCounter, 6471 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 4659 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6471 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 4659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:21,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6471 Valid, 5300 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 4659 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:10:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-11-25 18:10:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 2240. [2021-11-25 18:10:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2204 states have (on average 1.3543557168784028) internal successors, (2985), 2239 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2985 transitions. [2021-11-25 18:10:22,573 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2985 transitions. Word has length 132 [2021-11-25 18:10:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:22,574 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2985 transitions. [2021-11-25 18:10:22,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2985 transitions. [2021-11-25 18:10:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 18:10:22,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:22,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:22,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-25 18:10:22,576 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1913021862, now seen corresponding path program 1 times [2021-11-25 18:10:22,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:22,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152276097] [2021-11-25 18:10:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:22,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:22,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:22,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152276097] [2021-11-25 18:10:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152276097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:22,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:22,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:10:22,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759992877] [2021-11-25 18:10:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:22,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:10:22,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:10:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:10:22,883 INFO L87 Difference]: Start difference. First operand 2240 states and 2985 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:26,338 INFO L93 Difference]: Finished difference Result 3144 states and 3962 transitions. [2021-11-25 18:10:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:10:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-25 18:10:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:26,340 INFO L225 Difference]: With dead ends: 3144 [2021-11-25 18:10:26,340 INFO L226 Difference]: Without dead ends: 2668 [2021-11-25 18:10:26,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:10:26,344 INFO L933 BasicCegarLoop]: 2212 mSDtfsCounter, 8288 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8288 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:26,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8288 Valid, 6041 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:10:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-11-25 18:10:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1880. [2021-11-25 18:10:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1851 states have (on average 1.35602377093463) internal successors, (2510), 1879 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2510 transitions. [2021-11-25 18:10:27,206 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2510 transitions. Word has length 132 [2021-11-25 18:10:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:27,206 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 2510 transitions. [2021-11-25 18:10:27,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2510 transitions. [2021-11-25 18:10:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 18:10:27,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:27,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:27,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-25 18:10:27,208 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-25 18:10:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash 842313583, now seen corresponding path program 1 times [2021-11-25 18:10:27,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:27,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025158911] [2021-11-25 18:10:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:27,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:10:27,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025158911] [2021-11-25 18:10:27,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025158911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:10:27,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:10:27,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:10:27,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240431097] [2021-11-25 18:10:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:10:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:10:27,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:10:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:10:27,336 INFO L87 Difference]: Start difference. First operand 1880 states and 2510 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:10:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:31,101 INFO L93 Difference]: Finished difference Result 3174 states and 4263 transitions. [2021-11-25 18:10:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:10:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-25 18:10:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:31,103 INFO L225 Difference]: With dead ends: 3174 [2021-11-25 18:10:31,103 INFO L226 Difference]: Without dead ends: 3014 [2021-11-25 18:10:31,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:10:31,104 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 4807 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 3549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:31,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 3983 Invalid, 3549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:10:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states.