./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH --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 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:54:34,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:54:34,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:54:34,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:54:34,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:54:34,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:54:34,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:54:34,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:54:34,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:54:34,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:54:34,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:54:34,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:54:34,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:54:34,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:54:34,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:54:34,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:54:34,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:54:34,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:54:34,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:54:34,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:54:34,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:54:34,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:54:34,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:54:34,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:54:34,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:54:34,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:54:34,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:54:34,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:54:34,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:54:34,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:54:34,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:54:34,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:54:34,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:54:34,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:54:34,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:54:34,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:54:34,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:54:34,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:54:34,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:54:34,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:54:34,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:54:34,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:54:34,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:54:34,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:54:34,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:54:34,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:54:34,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:54:34,740 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:54:34,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:54:34,741 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:54:34,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:54:34,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:54:34,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:54:34,743 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:54:34,743 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:54:34,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:54:34,744 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:54:34,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:54:34,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:54:34,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:54:34,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:54:34,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:54:34,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:54:34,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:54:34,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:54:34,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:54:34,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:54:34,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:54:34,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:54:34,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:54:34,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:54:34,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:54:34,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:34,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:54:34,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:54:34,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:54:34,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:54:34,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:54:34,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:54:34,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:54:34,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:54:34,753 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_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 [2021-11-03 03:54:35,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:54:35,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:54:35,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:54:35,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:54:35,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:54:35,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 03:54:35,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/data/b1fd18d28/f255738ceddb43de95c1196a7f8ea7dc/FLAG8feaa9c2b [2021-11-03 03:54:36,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:54:36,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 03:54:36,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/data/b1fd18d28/f255738ceddb43de95c1196a7f8ea7dc/FLAG8feaa9c2b [2021-11-03 03:54:36,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/data/b1fd18d28/f255738ceddb43de95c1196a7f8ea7dc [2021-11-03 03:54:36,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:54:36,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:54:36,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:36,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:54:36,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:54:36,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:36" (1/1) ... [2021-11-03 03:54:36,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1645897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:36, skipping insertion in model container [2021-11-03 03:54:36,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:54:36" (1/1) ... [2021-11-03 03:54:36,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:54:37,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:54:37,637 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-03 03:54:37,689 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-03 03:54:37,709 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-03 03:54:37,723 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-03 03:54:37,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-03 03:54:37,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-03 03:54:37,785 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-03 03:54:37,829 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-03 03:54:37,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-03 03:54:37,875 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-03 03:54:37,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-03 03:54:37,930 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-03 03:54:37,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-03 03:54:37,950 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-03 03:54:37,968 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-03 03:54:37,995 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-03 03:54:38,041 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-03 03:54:38,049 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-03 03:54:38,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-03 03:54:38,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-03 03:54:38,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-03 03:54:38,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-03 03:54:38,263 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-03 03:54:38,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-03 03:54:38,282 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-03 03:54:38,299 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-03 03:54:38,345 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-03 03:54:38,385 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-03 03:54:38,446 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-03 03:54:39,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:39,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:54:39,705 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-03 03:54:39,727 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-03 03:54:39,737 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-03 03:54:39,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-03 03:54:39,755 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-03 03:54:39,762 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-03 03:54:39,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-03 03:54:39,787 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-03 03:54:39,794 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-03 03:54:39,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-03 03:54:39,816 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-03 03:54:39,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-03 03:54:39,852 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-03 03:54:39,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-03 03:54:39,876 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-03 03:54:39,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-03 03:54:39,930 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-03 03:54:39,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-03 03:54:39,945 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-03 03:54:39,959 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-03 03:54:39,984 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-03 03:54:40,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-03 03:54:40,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-03 03:54:40,096 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-03 03:54:40,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-03 03:54:40,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-03 03:54:40,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-03 03:54:40,205 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-03 03:54:40,254 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-03 03:54:41,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:54:41,076 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:54:41,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41 WrapperNode [2021-11-03 03:54:41,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:54:41,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:41,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:54:41,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:54:41,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:54:41,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:54:41,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:54:41,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:54:41,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:54:41,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:54:41,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:54:41,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:54:41,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (1/1) ... [2021-11-03 03:54:41,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:54:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:54:41,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:54:41,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3955407-5a4f-4f8f-8d98-7159b3bb6ab2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:54:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:54:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:54:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:54:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:54:50,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:54:50,785 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 03:54:50,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:50 BoogieIcfgContainer [2021-11-03 03:54:50,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:54:50,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:54:50,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:54:50,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:54:50,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:54:36" (1/3) ... [2021-11-03 03:54:50,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3443b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:50, skipping insertion in model container [2021-11-03 03:54:50,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:54:41" (2/3) ... [2021-11-03 03:54:50,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3443b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:54:50, skipping insertion in model container [2021-11-03 03:54:50,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:54:50" (3/3) ... [2021-11-03 03:54:50,811 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-03 03:54:50,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:54:50,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-03 03:54:50,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:54:50,911 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 [2021-11-03 03:54:50,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-03 03:54:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 1987 states, 1957 states have (on average 1.8727644353602453) internal successors, (3665), 1986 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 03:54:51,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:51,012 INFO L513 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] [2021-11-03 03:54:51,013 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1135640583, now seen corresponding path program 1 times [2021-11-03 03:54:51,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:51,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193651204] [2021-11-03 03:54:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:51,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:51,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:51,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193651204] [2021-11-03 03:54:51,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193651204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:51,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:51,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:51,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164357699] [2021-11-03 03:54:51,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:51,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:51,880 INFO L87 Difference]: Start difference. First operand has 1987 states, 1957 states have (on average 1.8727644353602453) internal successors, (3665), 1986 states have internal predecessors, (3665), 0 states have call successors, (0), 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 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:53,620 INFO L93 Difference]: Finished difference Result 2905 states and 5187 transitions. [2021-11-03 03:54:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-03 03:54:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:53,653 INFO L225 Difference]: With dead ends: 2905 [2021-11-03 03:54:53,653 INFO L226 Difference]: Without dead ends: 1485 [2021-11-03 03:54:53,667 INFO L786 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 [2021-11-03 03:54:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2021-11-03 03:54:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2021-11-03 03:54:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1456 states have (on average 1.3070054945054945) internal successors, (1903), 1484 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1903 transitions. [2021-11-03 03:54:53,829 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1903 transitions. Word has length 99 [2021-11-03 03:54:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 1903 transitions. [2021-11-03 03:54:53,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1903 transitions. [2021-11-03 03:54:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 03:54:53,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:53,840 INFO L513 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] [2021-11-03 03:54:53,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:54:53,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1968753033, now seen corresponding path program 1 times [2021-11-03 03:54:53,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:53,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648309306] [2021-11-03 03:54:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:53,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:54,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:54,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648309306] [2021-11-03 03:54:54,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648309306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:54,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:54,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:54,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038918698] [2021-11-03 03:54:54,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:54,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:54,141 INFO L87 Difference]: Start difference. First operand 1485 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:55,456 INFO L93 Difference]: Finished difference Result 2397 states and 3170 transitions. [2021-11-03 03:54:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 03:54:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:55,466 INFO L225 Difference]: With dead ends: 2397 [2021-11-03 03:54:55,466 INFO L226 Difference]: Without dead ends: 1277 [2021-11-03 03:54:55,469 INFO L786 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 [2021-11-03 03:54:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-03 03:54:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1277. [2021-11-03 03:54:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1248 states have (on average 1.3317307692307692) internal successors, (1662), 1276 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1662 transitions. [2021-11-03 03:54:55,541 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1662 transitions. Word has length 100 [2021-11-03 03:54:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:55,543 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1662 transitions. [2021-11-03 03:54:55,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1662 transitions. [2021-11-03 03:54:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 03:54:55,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:55,551 INFO L513 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] [2021-11-03 03:54:55,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:54:55,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash -703352954, now seen corresponding path program 1 times [2021-11-03 03:54:55,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:55,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220989675] [2021-11-03 03:54:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:55,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:55,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:55,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220989675] [2021-11-03 03:54:55,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220989675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:55,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:55,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:55,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933155232] [2021-11-03 03:54:55,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:55,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:55,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:55,792 INFO L87 Difference]: Start difference. First operand 1277 states and 1662 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:56,981 INFO L93 Difference]: Finished difference Result 2189 states and 2928 transitions. [2021-11-03 03:54:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:56,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-03 03:54:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:56,990 INFO L225 Difference]: With dead ends: 2189 [2021-11-03 03:54:56,990 INFO L226 Difference]: Without dead ends: 1137 [2021-11-03 03:54:56,992 INFO L786 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 [2021-11-03 03:54:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-03 03:54:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2021-11-03 03:54:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1108 states have (on average 1.358303249097473) internal successors, (1505), 1136 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1505 transitions. [2021-11-03 03:54:57,061 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1505 transitions. Word has length 101 [2021-11-03 03:54:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:57,063 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1505 transitions. [2021-11-03 03:54:57,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1505 transitions. [2021-11-03 03:54:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 03:54:57,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:57,069 INFO L513 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] [2021-11-03 03:54:57,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:54:57,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 472316096, now seen corresponding path program 1 times [2021-11-03 03:54:57,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:57,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849989965] [2021-11-03 03:54:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:57,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:57,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:57,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849989965] [2021-11-03 03:54:57,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849989965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:57,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:57,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:57,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809026311] [2021-11-03 03:54:57,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:57,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:57,272 INFO L87 Difference]: Start difference. First operand 1137 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:58,615 INFO L93 Difference]: Finished difference Result 2049 states and 2770 transitions. [2021-11-03 03:54:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:58,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-03 03:54:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:58,624 INFO L225 Difference]: With dead ends: 2049 [2021-11-03 03:54:58,625 INFO L226 Difference]: Without dead ends: 1097 [2021-11-03 03:54:58,627 INFO L786 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 [2021-11-03 03:54:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-11-03 03:54:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2021-11-03 03:54:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1068 states have (on average 1.3632958801498127) internal successors, (1456), 1096 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1456 transitions. [2021-11-03 03:54:58,699 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1456 transitions. Word has length 102 [2021-11-03 03:54:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:58,700 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 1456 transitions. [2021-11-03 03:54:58,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1456 transitions. [2021-11-03 03:54:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:54:58,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:58,705 INFO L513 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] [2021-11-03 03:54:58,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:54:58,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1771013563, now seen corresponding path program 1 times [2021-11-03 03:54:58,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:58,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466559307] [2021-11-03 03:54:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:58,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:54:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:54:58,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:54:58,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466559307] [2021-11-03 03:54:58,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466559307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:54:58,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:54:58,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:54:58,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099963843] [2021-11-03 03:54:58,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:54:58,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:54:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:54:58,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:54:58,841 INFO L87 Difference]: Start difference. First operand 1097 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:54:59,838 INFO L93 Difference]: Finished difference Result 2009 states and 2720 transitions. [2021-11-03 03:54:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:54:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-03 03:54:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:54:59,845 INFO L225 Difference]: With dead ends: 2009 [2021-11-03 03:54:59,845 INFO L226 Difference]: Without dead ends: 1035 [2021-11-03 03:54:59,848 INFO L786 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 [2021-11-03 03:54:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-11-03 03:54:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2021-11-03 03:54:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1006 states have (on average 1.3807157057654076) internal successors, (1389), 1034 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1389 transitions. [2021-11-03 03:54:59,917 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1389 transitions. Word has length 103 [2021-11-03 03:54:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:54:59,919 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1389 transitions. [2021-11-03 03:54:59,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:54:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1389 transitions. [2021-11-03 03:54:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 03:54:59,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:54:59,924 INFO L513 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] [2021-11-03 03:54:59,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:54:59,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:54:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:54:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash -54343083, now seen corresponding path program 1 times [2021-11-03 03:54:59,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:54:59,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225172749] [2021-11-03 03:54:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:54:59,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:54:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:00,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:00,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225172749] [2021-11-03 03:55:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225172749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:00,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:00,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:55:00,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311156869] [2021-11-03 03:55:00,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:55:00,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:55:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:55:00,104 INFO L87 Difference]: Start difference. First operand 1035 states and 1389 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:01,660 INFO L93 Difference]: Finished difference Result 2487 states and 3383 transitions. [2021-11-03 03:55:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:55:01,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 03:55:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:01,672 INFO L225 Difference]: With dead ends: 2487 [2021-11-03 03:55:01,672 INFO L226 Difference]: Without dead ends: 1541 [2021-11-03 03:55:01,674 INFO L786 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 [2021-11-03 03:55:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-11-03 03:55:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1439. [2021-11-03 03:55:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1410 states have (on average 1.4184397163120568) internal successors, (2000), 1438 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:01,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2000 transitions. [2021-11-03 03:55:01,848 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2000 transitions. Word has length 104 [2021-11-03 03:55:01,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:01,849 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 2000 transitions. [2021-11-03 03:55:01,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2000 transitions. [2021-11-03 03:55:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 03:55:01,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:01,868 INFO L513 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] [2021-11-03 03:55:01,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:55:01,869 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 883423548, now seen corresponding path program 1 times [2021-11-03 03:55:01,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:01,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906282894] [2021-11-03 03:55:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:01,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:02,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:02,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906282894] [2021-11-03 03:55:02,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906282894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:02,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:02,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 03:55:02,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604663559] [2021-11-03 03:55:02,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:55:02,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:55:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:55:02,027 INFO L87 Difference]: Start difference. First operand 1439 states and 2000 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:03,104 INFO L93 Difference]: Finished difference Result 2789 states and 3910 transitions. [2021-11-03 03:55:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:55:03,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-03 03:55:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:03,115 INFO L225 Difference]: With dead ends: 2789 [2021-11-03 03:55:03,115 INFO L226 Difference]: Without dead ends: 1428 [2021-11-03 03:55:03,118 INFO L786 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 [2021-11-03 03:55:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-03 03:55:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-11-03 03:55:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4195854181558256) internal successors, (1986), 1427 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1986 transitions. [2021-11-03 03:55:03,237 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1986 transitions. Word has length 105 [2021-11-03 03:55:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1986 transitions. [2021-11-03 03:55:03,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1986 transitions. [2021-11-03 03:55:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:55:03,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:03,243 INFO L513 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] [2021-11-03 03:55:03,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:55:03,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1511270635, now seen corresponding path program 1 times [2021-11-03 03:55:03,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:03,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627301041] [2021-11-03 03:55:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:03,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:03,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:03,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627301041] [2021-11-03 03:55:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627301041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:03,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:03,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:03,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488984080] [2021-11-03 03:55:03,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:03,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:03,486 INFO L87 Difference]: Start difference. First operand 1428 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:06,208 INFO L93 Difference]: Finished difference Result 2382 states and 3277 transitions. [2021-11-03 03:55:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:55:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:06,226 INFO L225 Difference]: With dead ends: 2382 [2021-11-03 03:55:06,226 INFO L226 Difference]: Without dead ends: 2080 [2021-11-03 03:55:06,228 INFO L786 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 [2021-11-03 03:55:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-03 03:55:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1428. [2021-11-03 03:55:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4188706218727662) internal successors, (1985), 1427 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1985 transitions. [2021-11-03 03:55:06,367 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1985 transitions. Word has length 106 [2021-11-03 03:55:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:06,368 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1985 transitions. [2021-11-03 03:55:06,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1985 transitions. [2021-11-03 03:55:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:55:06,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:06,373 INFO L513 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] [2021-11-03 03:55:06,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:55:06,373 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1798506288, now seen corresponding path program 1 times [2021-11-03 03:55:06,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:06,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328367961] [2021-11-03 03:55:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:06,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:06,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:06,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328367961] [2021-11-03 03:55:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328367961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:06,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:06,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:06,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616105358] [2021-11-03 03:55:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:06,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:06,623 INFO L87 Difference]: Start difference. First operand 1428 states and 1985 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:09,929 INFO L93 Difference]: Finished difference Result 2620 states and 3624 transitions. [2021-11-03 03:55:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:55:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:09,948 INFO L225 Difference]: With dead ends: 2620 [2021-11-03 03:55:09,948 INFO L226 Difference]: Without dead ends: 2425 [2021-11-03 03:55:09,950 INFO L786 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 [2021-11-03 03:55:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-03 03:55:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-03 03:55:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4181558255897069) internal successors, (1984), 1427 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1984 transitions. [2021-11-03 03:55:10,138 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1984 transitions. Word has length 106 [2021-11-03 03:55:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:10,139 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1984 transitions. [2021-11-03 03:55:10,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1984 transitions. [2021-11-03 03:55:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:55:10,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:10,148 INFO L513 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] [2021-11-03 03:55:10,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 03:55:10,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -43154195, now seen corresponding path program 1 times [2021-11-03 03:55:10,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:10,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912988717] [2021-11-03 03:55:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:10,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:10,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:10,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912988717] [2021-11-03 03:55:10,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912988717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:10,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:10,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 03:55:10,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234703778] [2021-11-03 03:55:10,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:55:10,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:55:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:55:10,490 INFO L87 Difference]: Start difference. First operand 1428 states and 1984 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:13,111 INFO L93 Difference]: Finished difference Result 2249 states and 3044 transitions. [2021-11-03 03:55:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:55:13,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:55:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:13,126 INFO L225 Difference]: With dead ends: 2249 [2021-11-03 03:55:13,127 INFO L226 Difference]: Without dead ends: 2244 [2021-11-03 03:55:13,128 INFO L786 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 [2021-11-03 03:55:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2021-11-03 03:55:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1428. [2021-11-03 03:55:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4167262330235884) internal successors, (1982), 1427 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1982 transitions. [2021-11-03 03:55:13,290 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1982 transitions. Word has length 106 [2021-11-03 03:55:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:13,291 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1982 transitions. [2021-11-03 03:55:13,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1982 transitions. [2021-11-03 03:55:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:55:13,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:13,296 INFO L513 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] [2021-11-03 03:55:13,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 03:55:13,297 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1341044233, now seen corresponding path program 1 times [2021-11-03 03:55:13,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:13,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961687093] [2021-11-03 03:55:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:13,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:13,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:13,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961687093] [2021-11-03 03:55:13,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961687093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:13,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:13,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 03:55:13,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032486599] [2021-11-03 03:55:13,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:55:13,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:55:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:55:13,515 INFO L87 Difference]: Start difference. First operand 1428 states and 1982 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:15,405 INFO L93 Difference]: Finished difference Result 2402 states and 3194 transitions. [2021-11-03 03:55:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:55:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 03:55:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:15,415 INFO L225 Difference]: With dead ends: 2402 [2021-11-03 03:55:15,415 INFO L226 Difference]: Without dead ends: 1812 [2021-11-03 03:55:15,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:55:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-03 03:55:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1428. [2021-11-03 03:55:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.416011436740529) internal successors, (1981), 1427 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1981 transitions. [2021-11-03 03:55:15,583 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1981 transitions. Word has length 106 [2021-11-03 03:55:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:15,584 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1981 transitions. [2021-11-03 03:55:15,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1981 transitions. [2021-11-03 03:55:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:15,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:15,589 INFO L513 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] [2021-11-03 03:55:15,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 03:55:15,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1774608653, now seen corresponding path program 1 times [2021-11-03 03:55:15,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:15,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715668241] [2021-11-03 03:55:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:15,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:15,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:15,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715668241] [2021-11-03 03:55:15,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715668241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:15,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:15,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:15,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924584791] [2021-11-03 03:55:15,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:15,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:15,794 INFO L87 Difference]: Start difference. First operand 1428 states and 1981 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:18,207 INFO L93 Difference]: Finished difference Result 2566 states and 3537 transitions. [2021-11-03 03:55:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:18,218 INFO L225 Difference]: With dead ends: 2566 [2021-11-03 03:55:18,218 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:55:18,219 INFO L786 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 [2021-11-03 03:55:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:55:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:55:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4152966404574696) internal successors, (1980), 1427 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1980 transitions. [2021-11-03 03:55:18,437 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1980 transitions. Word has length 108 [2021-11-03 03:55:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1980 transitions. [2021-11-03 03:55:18,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1980 transitions. [2021-11-03 03:55:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:18,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:18,448 INFO L513 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] [2021-11-03 03:55:18,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 03:55:18,449 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:18,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1111952338, now seen corresponding path program 1 times [2021-11-03 03:55:18,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:18,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943939113] [2021-11-03 03:55:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:18,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:18,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:18,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943939113] [2021-11-03 03:55:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943939113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:18,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:18,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:18,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958197010] [2021-11-03 03:55:18,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:18,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:18,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:18,669 INFO L87 Difference]: Start difference. First operand 1428 states and 1980 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:21,052 INFO L93 Difference]: Finished difference Result 2554 states and 3521 transitions. [2021-11-03 03:55:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:21,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:21,063 INFO L225 Difference]: With dead ends: 2554 [2021-11-03 03:55:21,063 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:55:21,065 INFO L786 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 [2021-11-03 03:55:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:55:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:55:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4145818441744102) internal successors, (1979), 1427 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1979 transitions. [2021-11-03 03:55:21,196 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1979 transitions. Word has length 108 [2021-11-03 03:55:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:21,197 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1979 transitions. [2021-11-03 03:55:21,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1979 transitions. [2021-11-03 03:55:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:21,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:21,202 INFO L513 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] [2021-11-03 03:55:21,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 03:55:21,203 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -507418736, now seen corresponding path program 1 times [2021-11-03 03:55:21,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:21,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318771873] [2021-11-03 03:55:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:21,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:21,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318771873] [2021-11-03 03:55:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318771873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:21,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:21,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:21,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266900563] [2021-11-03 03:55:21,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:21,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:21,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:21,384 INFO L87 Difference]: Start difference. First operand 1428 states and 1979 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:23,653 INFO L93 Difference]: Finished difference Result 2643 states and 3641 transitions. [2021-11-03 03:55:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:23,664 INFO L225 Difference]: With dead ends: 2643 [2021-11-03 03:55:23,665 INFO L226 Difference]: Without dead ends: 2425 [2021-11-03 03:55:23,666 INFO L786 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 [2021-11-03 03:55:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-03 03:55:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-03 03:55:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4138670478913509) internal successors, (1978), 1427 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1978 transitions. [2021-11-03 03:55:23,819 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1978 transitions. Word has length 108 [2021-11-03 03:55:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:23,819 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1978 transitions. [2021-11-03 03:55:23,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1978 transitions. [2021-11-03 03:55:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:23,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:23,824 INFO L513 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] [2021-11-03 03:55:23,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 03:55:23,825 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash 899330884, now seen corresponding path program 1 times [2021-11-03 03:55:23,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:23,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407861537] [2021-11-03 03:55:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:23,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:24,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:24,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407861537] [2021-11-03 03:55:24,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407861537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:24,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:24,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:24,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826402576] [2021-11-03 03:55:24,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:24,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:24,017 INFO L87 Difference]: Start difference. First operand 1428 states and 1978 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:26,576 INFO L93 Difference]: Finished difference Result 2562 states and 3527 transitions. [2021-11-03 03:55:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:26,592 INFO L225 Difference]: With dead ends: 2562 [2021-11-03 03:55:26,593 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:55:26,594 INFO L786 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 [2021-11-03 03:55:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:55:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:55:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4131522516082917) internal successors, (1977), 1427 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1977 transitions. [2021-11-03 03:55:26,786 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1977 transitions. Word has length 108 [2021-11-03 03:55:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:26,786 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1977 transitions. [2021-11-03 03:55:26,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1977 transitions. [2021-11-03 03:55:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:26,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:26,792 INFO L513 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] [2021-11-03 03:55:26,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 03:55:26,793 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash -121651885, now seen corresponding path program 1 times [2021-11-03 03:55:26,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:26,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921593323] [2021-11-03 03:55:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:26,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:26,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:26,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921593323] [2021-11-03 03:55:26,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921593323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:26,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:26,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:26,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724095363] [2021-11-03 03:55:26,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:26,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:26,985 INFO L87 Difference]: Start difference. First operand 1428 states and 1977 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:29,374 INFO L93 Difference]: Finished difference Result 2729 states and 3762 transitions. [2021-11-03 03:55:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:29,390 INFO L225 Difference]: With dead ends: 2729 [2021-11-03 03:55:29,390 INFO L226 Difference]: Without dead ends: 2425 [2021-11-03 03:55:29,392 INFO L786 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 [2021-11-03 03:55:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-03 03:55:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-03 03:55:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.411722659042173) internal successors, (1975), 1427 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1975 transitions. [2021-11-03 03:55:29,547 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1975 transitions. Word has length 108 [2021-11-03 03:55:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:29,548 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1975 transitions. [2021-11-03 03:55:29,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1975 transitions. [2021-11-03 03:55:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:29,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:29,553 INFO L513 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] [2021-11-03 03:55:29,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 03:55:29,553 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1711979523, now seen corresponding path program 1 times [2021-11-03 03:55:29,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:29,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696045108] [2021-11-03 03:55:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:29,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:29,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:29,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696045108] [2021-11-03 03:55:29,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696045108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:29,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:29,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:29,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498068286] [2021-11-03 03:55:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:29,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:29,735 INFO L87 Difference]: Start difference. First operand 1428 states and 1975 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:32,741 INFO L93 Difference]: Finished difference Result 2609 states and 3594 transitions. [2021-11-03 03:55:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:32,748 INFO L225 Difference]: With dead ends: 2609 [2021-11-03 03:55:32,749 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:55:32,750 INFO L786 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 [2021-11-03 03:55:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:55:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:55:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4102930664760542) internal successors, (1973), 1427 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1973 transitions. [2021-11-03 03:55:32,886 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1973 transitions. Word has length 108 [2021-11-03 03:55:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:32,887 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1973 transitions. [2021-11-03 03:55:32,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1973 transitions. [2021-11-03 03:55:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 03:55:32,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:32,892 INFO L513 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] [2021-11-03 03:55:32,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 03:55:32,892 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -567046043, now seen corresponding path program 1 times [2021-11-03 03:55:32,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:32,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249031400] [2021-11-03 03:55:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:32,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:33,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:33,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249031400] [2021-11-03 03:55:33,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249031400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:33,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:33,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:33,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315873325] [2021-11-03 03:55:33,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:33,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:33,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:33,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:33,070 INFO L87 Difference]: Start difference. First operand 1428 states and 1973 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:35,028 INFO L93 Difference]: Finished difference Result 2120 states and 2921 transitions. [2021-11-03 03:55:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:55:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 03:55:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:35,036 INFO L225 Difference]: With dead ends: 2120 [2021-11-03 03:55:35,036 INFO L226 Difference]: Without dead ends: 1540 [2021-11-03 03:55:35,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:55:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-11-03 03:55:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1428. [2021-11-03 03:55:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4088634739099357) internal successors, (1971), 1427 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1971 transitions. [2021-11-03 03:55:35,232 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1971 transitions. Word has length 108 [2021-11-03 03:55:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:35,232 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1971 transitions. [2021-11-03 03:55:35,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1971 transitions. [2021-11-03 03:55:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:35,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:35,236 INFO L513 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] [2021-11-03 03:55:35,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 03:55:35,237 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2070409836, now seen corresponding path program 1 times [2021-11-03 03:55:35,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:35,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388977530] [2021-11-03 03:55:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:35,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:35,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:35,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388977530] [2021-11-03 03:55:35,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388977530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:35,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:35,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:35,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635559158] [2021-11-03 03:55:35,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:35,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:35,447 INFO L87 Difference]: Start difference. First operand 1428 states and 1971 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:37,986 INFO L93 Difference]: Finished difference Result 2518 states and 3451 transitions. [2021-11-03 03:55:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:55:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:37,990 INFO L225 Difference]: With dead ends: 2518 [2021-11-03 03:55:37,990 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:37,991 INFO L786 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 [2021-11-03 03:55:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4081486776268763) internal successors, (1970), 1427 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1970 transitions. [2021-11-03 03:55:38,141 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1970 transitions. Word has length 110 [2021-11-03 03:55:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:38,141 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1970 transitions. [2021-11-03 03:55:38,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1970 transitions. [2021-11-03 03:55:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:38,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:38,144 INFO L513 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] [2021-11-03 03:55:38,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 03:55:38,145 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -609046091, now seen corresponding path program 1 times [2021-11-03 03:55:38,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:38,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448705860] [2021-11-03 03:55:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:38,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:38,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:38,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448705860] [2021-11-03 03:55:38,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448705860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:38,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:38,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:38,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415851114] [2021-11-03 03:55:38,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:38,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:38,322 INFO L87 Difference]: Start difference. First operand 1428 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:41,430 INFO L93 Difference]: Finished difference Result 2512 states and 3444 transitions. [2021-11-03 03:55:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:41,436 INFO L225 Difference]: With dead ends: 2512 [2021-11-03 03:55:41,437 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:41,438 INFO L786 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 [2021-11-03 03:55:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.407433881343817) internal successors, (1969), 1427 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1969 transitions. [2021-11-03 03:55:41,597 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1969 transitions. Word has length 110 [2021-11-03 03:55:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:41,597 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1969 transitions. [2021-11-03 03:55:41,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1969 transitions. [2021-11-03 03:55:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:41,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:41,601 INFO L513 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] [2021-11-03 03:55:41,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 03:55:41,602 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1547475906, now seen corresponding path program 1 times [2021-11-03 03:55:41,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:41,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494453555] [2021-11-03 03:55:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:41,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:41,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:41,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494453555] [2021-11-03 03:55:41,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494453555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:41,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:41,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:41,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555840108] [2021-11-03 03:55:41,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:41,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:41,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:41,785 INFO L87 Difference]: Start difference. First operand 1428 states and 1969 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:44,895 INFO L93 Difference]: Finished difference Result 2506 states and 3434 transitions. [2021-11-03 03:55:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:44,900 INFO L225 Difference]: With dead ends: 2506 [2021-11-03 03:55:44,900 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:44,901 INFO L786 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 [2021-11-03 03:55:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4067190850607576) internal successors, (1968), 1427 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1968 transitions. [2021-11-03 03:55:45,099 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1968 transitions. Word has length 110 [2021-11-03 03:55:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:45,100 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1968 transitions. [2021-11-03 03:55:45,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1968 transitions. [2021-11-03 03:55:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:45,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:45,104 INFO L513 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] [2021-11-03 03:55:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 03:55:45,105 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2099765620, now seen corresponding path program 1 times [2021-11-03 03:55:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774632557] [2021-11-03 03:55:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:45,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:45,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:45,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774632557] [2021-11-03 03:55:45,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774632557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:45,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:45,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:45,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048961857] [2021-11-03 03:55:45,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:45,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:45,302 INFO L87 Difference]: Start difference. First operand 1428 states and 1968 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:48,073 INFO L93 Difference]: Finished difference Result 2512 states and 3442 transitions. [2021-11-03 03:55:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:55:48,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:48,079 INFO L225 Difference]: With dead ends: 2512 [2021-11-03 03:55:48,079 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:48,080 INFO L786 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 [2021-11-03 03:55:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4060042887776985) internal successors, (1967), 1427 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1967 transitions. [2021-11-03 03:55:48,233 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1967 transitions. Word has length 110 [2021-11-03 03:55:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:48,233 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1967 transitions. [2021-11-03 03:55:48,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1967 transitions. [2021-11-03 03:55:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:48,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:48,235 INFO L513 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] [2021-11-03 03:55:48,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 03:55:48,236 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash -583741300, now seen corresponding path program 1 times [2021-11-03 03:55:48,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:48,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425980256] [2021-11-03 03:55:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:48,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:48,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:48,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425980256] [2021-11-03 03:55:48,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425980256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:48,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:48,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:48,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147923020] [2021-11-03 03:55:48,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:48,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:48,414 INFO L87 Difference]: Start difference. First operand 1428 states and 1967 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:51,241 INFO L93 Difference]: Finished difference Result 2518 states and 3446 transitions. [2021-11-03 03:55:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:51,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:51,251 INFO L225 Difference]: With dead ends: 2518 [2021-11-03 03:55:51,251 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:51,253 INFO L786 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 [2021-11-03 03:55:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.405289492494639) internal successors, (1966), 1427 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1966 transitions. [2021-11-03 03:55:51,498 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1966 transitions. Word has length 110 [2021-11-03 03:55:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:51,499 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1966 transitions. [2021-11-03 03:55:51,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1966 transitions. [2021-11-03 03:55:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:51,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:51,503 INFO L513 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] [2021-11-03 03:55:51,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 03:55:51,503 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1881631338, now seen corresponding path program 1 times [2021-11-03 03:55:51,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:51,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000951137] [2021-11-03 03:55:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:51,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:51,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:51,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000951137] [2021-11-03 03:55:51,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000951137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:51,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:51,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:51,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175699593] [2021-11-03 03:55:51,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:51,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:51,703 INFO L87 Difference]: Start difference. First operand 1428 states and 1966 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:54,527 INFO L93 Difference]: Finished difference Result 2581 states and 3533 transitions. [2021-11-03 03:55:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:54,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:54,533 INFO L225 Difference]: With dead ends: 2581 [2021-11-03 03:55:54,533 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:55:54,535 INFO L786 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 [2021-11-03 03:55:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:55:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:55:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4045746962115797) internal successors, (1965), 1427 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1965 transitions. [2021-11-03 03:55:54,868 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1965 transitions. Word has length 110 [2021-11-03 03:55:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:54,869 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1965 transitions. [2021-11-03 03:55:54,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1965 transitions. [2021-11-03 03:55:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:54,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:54,872 INFO L513 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] [2021-11-03 03:55:54,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 03:55:54,873 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash 656800929, now seen corresponding path program 1 times [2021-11-03 03:55:54,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:54,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672688991] [2021-11-03 03:55:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:54,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:55,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:55,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672688991] [2021-11-03 03:55:55,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672688991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:55,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:55,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:55,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498115124] [2021-11-03 03:55:55,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:55,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:55,060 INFO L87 Difference]: Start difference. First operand 1428 states and 1965 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:57,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:55:57,891 INFO L93 Difference]: Finished difference Result 2508 states and 3431 transitions. [2021-11-03 03:55:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:55:57,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:55:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:55:57,897 INFO L225 Difference]: With dead ends: 2508 [2021-11-03 03:55:57,897 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:55:57,898 INFO L786 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 [2021-11-03 03:55:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:55:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:55:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4038598999285203) internal successors, (1964), 1427 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1964 transitions. [2021-11-03 03:55:58,157 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1964 transitions. Word has length 110 [2021-11-03 03:55:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:55:58,157 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1964 transitions. [2021-11-03 03:55:58,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:55:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1964 transitions. [2021-11-03 03:55:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:55:58,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:55:58,161 INFO L513 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] [2021-11-03 03:55:58,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 03:55:58,162 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:55:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:55:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -959118563, now seen corresponding path program 1 times [2021-11-03 03:55:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:55:58,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904247847] [2021-11-03 03:55:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:55:58,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:55:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:55:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:55:58,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:55:58,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904247847] [2021-11-03 03:55:58,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904247847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:55:58,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:55:58,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:55:58,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262751454] [2021-11-03 03:55:58,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:55:58,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:55:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:55:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:55:58,335 INFO L87 Difference]: Start difference. First operand 1428 states and 1964 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:01,089 INFO L93 Difference]: Finished difference Result 2518 states and 3443 transitions. [2021-11-03 03:56:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:01,094 INFO L225 Difference]: With dead ends: 2518 [2021-11-03 03:56:01,095 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:01,096 INFO L786 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 [2021-11-03 03:56:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.403145103645461) internal successors, (1963), 1427 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1963 transitions. [2021-11-03 03:56:01,353 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1963 transitions. Word has length 110 [2021-11-03 03:56:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:01,353 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1963 transitions. [2021-11-03 03:56:01,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1963 transitions. [2021-11-03 03:56:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:01,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:01,357 INFO L513 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] [2021-11-03 03:56:01,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 03:56:01,357 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1204907087, now seen corresponding path program 1 times [2021-11-03 03:56:01,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:01,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631308456] [2021-11-03 03:56:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:01,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:01,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:01,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631308456] [2021-11-03 03:56:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631308456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:01,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121951424] [2021-11-03 03:56:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:01,537 INFO L87 Difference]: Start difference. First operand 1428 states and 1963 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:04,401 INFO L93 Difference]: Finished difference Result 2615 states and 3578 transitions. [2021-11-03 03:56:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:04,405 INFO L225 Difference]: With dead ends: 2615 [2021-11-03 03:56:04,405 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:56:04,406 INFO L786 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 [2021-11-03 03:56:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:56:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:56:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4017155110793424) internal successors, (1961), 1427 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1961 transitions. [2021-11-03 03:56:04,613 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1961 transitions. Word has length 110 [2021-11-03 03:56:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:04,614 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1961 transitions. [2021-11-03 03:56:04,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1961 transitions. [2021-11-03 03:56:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:04,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:04,616 INFO L513 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] [2021-11-03 03:56:04,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 03:56:04,617 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash -550740200, now seen corresponding path program 1 times [2021-11-03 03:56:04,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:04,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479642925] [2021-11-03 03:56:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:04,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:04,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479642925] [2021-11-03 03:56:04,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479642925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:04,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:04,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:04,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171277343] [2021-11-03 03:56:04,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:04,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:04,810 INFO L87 Difference]: Start difference. First operand 1428 states and 1961 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:07,689 INFO L93 Difference]: Finished difference Result 2531 states and 3461 transitions. [2021-11-03 03:56:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:07,694 INFO L225 Difference]: With dead ends: 2531 [2021-11-03 03:56:07,694 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:07,695 INFO L786 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 [2021-11-03 03:56:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.4002859185132237) internal successors, (1959), 1427 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1959 transitions. [2021-11-03 03:56:07,874 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1959 transitions. Word has length 110 [2021-11-03 03:56:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:07,875 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1959 transitions. [2021-11-03 03:56:07,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1959 transitions. [2021-11-03 03:56:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:07,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:07,879 INFO L513 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] [2021-11-03 03:56:07,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 03:56:07,879 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2127419862, now seen corresponding path program 1 times [2021-11-03 03:56:07,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:07,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377429091] [2021-11-03 03:56:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:07,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:08,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:08,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377429091] [2021-11-03 03:56:08,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377429091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:08,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:08,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:08,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867375847] [2021-11-03 03:56:08,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:08,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:08,035 INFO L87 Difference]: Start difference. First operand 1428 states and 1959 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:10,750 INFO L93 Difference]: Finished difference Result 2537 states and 3464 transitions. [2021-11-03 03:56:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:10,753 INFO L225 Difference]: With dead ends: 2537 [2021-11-03 03:56:10,753 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:10,754 INFO L786 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 [2021-11-03 03:56:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3988563259471052) internal successors, (1957), 1427 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1957 transitions. [2021-11-03 03:56:10,933 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1957 transitions. Word has length 110 [2021-11-03 03:56:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:10,933 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1957 transitions. [2021-11-03 03:56:10,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1957 transitions. [2021-11-03 03:56:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:10,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:10,936 INFO L513 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] [2021-11-03 03:56:10,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 03:56:10,936 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 915039500, now seen corresponding path program 1 times [2021-11-03 03:56:10,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:10,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723509493] [2021-11-03 03:56:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:10,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:11,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:11,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723509493] [2021-11-03 03:56:11,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723509493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:11,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:11,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:11,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641705585] [2021-11-03 03:56:11,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:11,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:11,098 INFO L87 Difference]: Start difference. First operand 1428 states and 1957 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:14,028 INFO L93 Difference]: Finished difference Result 2541 states and 3466 transitions. [2021-11-03 03:56:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:14,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:14,047 INFO L225 Difference]: With dead ends: 2541 [2021-11-03 03:56:14,047 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:14,049 INFO L786 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 [2021-11-03 03:56:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3974267333809864) internal successors, (1955), 1427 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1955 transitions. [2021-11-03 03:56:14,308 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1955 transitions. Word has length 110 [2021-11-03 03:56:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:14,309 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1955 transitions. [2021-11-03 03:56:14,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1955 transitions. [2021-11-03 03:56:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:14,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:14,311 INFO L513 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] [2021-11-03 03:56:14,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 03:56:14,312 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash -382850538, now seen corresponding path program 1 times [2021-11-03 03:56:14,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:14,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116695206] [2021-11-03 03:56:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:14,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:14,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:14,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116695206] [2021-11-03 03:56:14,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116695206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:14,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:14,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:14,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616855789] [2021-11-03 03:56:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:14,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:14,477 INFO L87 Difference]: Start difference. First operand 1428 states and 1955 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:16,987 INFO L93 Difference]: Finished difference Result 2364 states and 3166 transitions. [2021-11-03 03:56:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:16,991 INFO L225 Difference]: With dead ends: 2364 [2021-11-03 03:56:16,991 INFO L226 Difference]: Without dead ends: 2252 [2021-11-03 03:56:16,992 INFO L786 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 [2021-11-03 03:56:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-03 03:56:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-03 03:56:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3959971408148677) internal successors, (1953), 1427 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1953 transitions. [2021-11-03 03:56:17,183 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1953 transitions. Word has length 110 [2021-11-03 03:56:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:17,184 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1953 transitions. [2021-11-03 03:56:17,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1953 transitions. [2021-11-03 03:56:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:17,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:17,186 INFO L513 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] [2021-11-03 03:56:17,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 03:56:17,187 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1938191792, now seen corresponding path program 1 times [2021-11-03 03:56:17,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:17,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113059932] [2021-11-03 03:56:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:17,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:17,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:17,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113059932] [2021-11-03 03:56:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113059932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:17,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:17,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:17,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480744805] [2021-11-03 03:56:17,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:17,341 INFO L87 Difference]: Start difference. First operand 1428 states and 1953 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:20,061 INFO L93 Difference]: Finished difference Result 2549 states and 3468 transitions. [2021-11-03 03:56:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:20,064 INFO L225 Difference]: With dead ends: 2549 [2021-11-03 03:56:20,064 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:20,065 INFO L786 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 [2021-11-03 03:56:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3945675482487492) internal successors, (1951), 1427 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1951 transitions. [2021-11-03 03:56:20,266 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1951 transitions. Word has length 110 [2021-11-03 03:56:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:20,266 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1951 transitions. [2021-11-03 03:56:20,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1951 transitions. [2021-11-03 03:56:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:56:20,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:20,270 INFO L513 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] [2021-11-03 03:56:20,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 03:56:20,271 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:20,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -715976179, now seen corresponding path program 1 times [2021-11-03 03:56:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:20,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549323190] [2021-11-03 03:56:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:20,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:20,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:20,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549323190] [2021-11-03 03:56:20,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549323190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:20,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:20,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:20,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895174175] [2021-11-03 03:56:20,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:20,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:20,437 INFO L87 Difference]: Start difference. First operand 1428 states and 1951 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:23,451 INFO L93 Difference]: Finished difference Result 2783 states and 3792 transitions. [2021-11-03 03:56:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-03 03:56:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:23,454 INFO L225 Difference]: With dead ends: 2783 [2021-11-03 03:56:23,454 INFO L226 Difference]: Without dead ends: 2425 [2021-11-03 03:56:23,455 INFO L786 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 [2021-11-03 03:56:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-03 03:56:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1428. [2021-11-03 03:56:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3931379556826304) internal successors, (1949), 1427 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1949 transitions. [2021-11-03 03:56:23,705 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1949 transitions. Word has length 110 [2021-11-03 03:56:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:23,706 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1949 transitions. [2021-11-03 03:56:23,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1949 transitions. [2021-11-03 03:56:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 03:56:23,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:23,708 INFO L513 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] [2021-11-03 03:56:23,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 03:56:23,709 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1240220365, now seen corresponding path program 1 times [2021-11-03 03:56:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:23,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573316772] [2021-11-03 03:56:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:23,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:23,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:23,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573316772] [2021-11-03 03:56:23,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573316772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:23,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:23,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:23,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070370540] [2021-11-03 03:56:23,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:23,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:23,889 INFO L87 Difference]: Start difference. First operand 1428 states and 1949 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:26,906 INFO L93 Difference]: Finished difference Result 2447 states and 3312 transitions. [2021-11-03 03:56:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-03 03:56:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:26,909 INFO L225 Difference]: With dead ends: 2447 [2021-11-03 03:56:26,910 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:26,911 INFO L786 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 [2021-11-03 03:56:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.392423159399571) internal successors, (1948), 1427 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1948 transitions. [2021-11-03 03:56:27,127 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1948 transitions. Word has length 111 [2021-11-03 03:56:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:27,127 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1948 transitions. [2021-11-03 03:56:27,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1948 transitions. [2021-11-03 03:56:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:27,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:27,130 INFO L513 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] [2021-11-03 03:56:27,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 03:56:27,130 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 294585012, now seen corresponding path program 1 times [2021-11-03 03:56:27,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:27,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263621307] [2021-11-03 03:56:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:27,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:27,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:27,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263621307] [2021-11-03 03:56:27,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263621307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:27,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:27,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:27,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139403078] [2021-11-03 03:56:27,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:27,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:27,302 INFO L87 Difference]: Start difference. First operand 1428 states and 1948 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:30,134 INFO L93 Difference]: Finished difference Result 2457 states and 3323 transitions. [2021-11-03 03:56:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:30,137 INFO L225 Difference]: With dead ends: 2457 [2021-11-03 03:56:30,138 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:30,139 INFO L786 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 [2021-11-03 03:56:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3917083631165117) internal successors, (1947), 1427 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1947 transitions. [2021-11-03 03:56:30,383 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1947 transitions. Word has length 112 [2021-11-03 03:56:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:30,384 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1947 transitions. [2021-11-03 03:56:30,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1947 transitions. [2021-11-03 03:56:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:30,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:30,386 INFO L513 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] [2021-11-03 03:56:30,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 03:56:30,387 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:30,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1558151312, now seen corresponding path program 1 times [2021-11-03 03:56:30,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:30,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720282220] [2021-11-03 03:56:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:30,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:30,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:30,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720282220] [2021-11-03 03:56:30,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720282220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:30,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:30,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:30,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257196347] [2021-11-03 03:56:30,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:30,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:30,533 INFO L87 Difference]: Start difference. First operand 1428 states and 1947 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:33,452 INFO L93 Difference]: Finished difference Result 2453 states and 3318 transitions. [2021-11-03 03:56:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:33,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:33,455 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:56:33,456 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:33,456 INFO L786 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 [2021-11-03 03:56:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3909935668334525) internal successors, (1946), 1427 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1946 transitions. [2021-11-03 03:56:33,679 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1946 transitions. Word has length 112 [2021-11-03 03:56:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1946 transitions. [2021-11-03 03:56:33,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1946 transitions. [2021-11-03 03:56:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:33,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:33,682 INFO L513 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] [2021-11-03 03:56:33,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 03:56:33,682 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1896693420, now seen corresponding path program 1 times [2021-11-03 03:56:33,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:33,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137625642] [2021-11-03 03:56:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:33,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:33,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:33,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137625642] [2021-11-03 03:56:33,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137625642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:33,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:33,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:33,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91537541] [2021-11-03 03:56:33,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:33,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:33,834 INFO L87 Difference]: Start difference. First operand 1428 states and 1946 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:36,591 INFO L93 Difference]: Finished difference Result 2453 states and 3317 transitions. [2021-11-03 03:56:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:36,595 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:56:36,595 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:36,596 INFO L786 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 [2021-11-03 03:56:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3902787705503932) internal successors, (1945), 1427 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1945 transitions. [2021-11-03 03:56:36,844 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1945 transitions. Word has length 112 [2021-11-03 03:56:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1945 transitions. [2021-11-03 03:56:36,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1945 transitions. [2021-11-03 03:56:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:36,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:36,848 INFO L513 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] [2021-11-03 03:56:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 03:56:36,849 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1908379433, now seen corresponding path program 1 times [2021-11-03 03:56:36,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:36,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573511583] [2021-11-03 03:56:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:36,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:36,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:36,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573511583] [2021-11-03 03:56:37,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573511583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:37,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:37,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:37,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113757691] [2021-11-03 03:56:37,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:37,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:37,002 INFO L87 Difference]: Start difference. First operand 1428 states and 1945 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:39,644 INFO L93 Difference]: Finished difference Result 2451 states and 3313 transitions. [2021-11-03 03:56:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:39,648 INFO L225 Difference]: With dead ends: 2451 [2021-11-03 03:56:39,648 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:39,649 INFO L786 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 [2021-11-03 03:56:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3895639742673338) internal successors, (1944), 1427 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1944 transitions. [2021-11-03 03:56:39,939 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1944 transitions. Word has length 112 [2021-11-03 03:56:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:39,939 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1944 transitions. [2021-11-03 03:56:39,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1944 transitions. [2021-11-03 03:56:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:39,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:39,943 INFO L513 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] [2021-11-03 03:56:39,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 03:56:39,943 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -729427139, now seen corresponding path program 1 times [2021-11-03 03:56:39,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:39,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491844727] [2021-11-03 03:56:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:39,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:40,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:40,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491844727] [2021-11-03 03:56:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491844727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:40,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:40,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:40,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219028811] [2021-11-03 03:56:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:40,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:40,091 INFO L87 Difference]: Start difference. First operand 1428 states and 1944 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:43,033 INFO L93 Difference]: Finished difference Result 2451 states and 3312 transitions. [2021-11-03 03:56:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:43,036 INFO L225 Difference]: With dead ends: 2451 [2021-11-03 03:56:43,036 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:43,037 INFO L786 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 [2021-11-03 03:56:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3888491779842744) internal successors, (1943), 1427 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1943 transitions. [2021-11-03 03:56:43,271 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1943 transitions. Word has length 112 [2021-11-03 03:56:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:43,271 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1943 transitions. [2021-11-03 03:56:43,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1943 transitions. [2021-11-03 03:56:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:43,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:43,274 INFO L513 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] [2021-11-03 03:56:43,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 03:56:43,274 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:43,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash 224905291, now seen corresponding path program 1 times [2021-11-03 03:56:43,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:43,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597952310] [2021-11-03 03:56:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:43,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:43,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:43,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597952310] [2021-11-03 03:56:43,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597952310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:43,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:43,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:43,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557391353] [2021-11-03 03:56:43,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:43,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:43,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:43,424 INFO L87 Difference]: Start difference. First operand 1428 states and 1943 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:46,543 INFO L93 Difference]: Finished difference Result 2453 states and 3312 transitions. [2021-11-03 03:56:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:46,546 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:56:46,546 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:46,547 INFO L786 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 [2021-11-03 03:56:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.388134381701215) internal successors, (1942), 1427 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1942 transitions. [2021-11-03 03:56:46,814 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1942 transitions. Word has length 112 [2021-11-03 03:56:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:46,815 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1942 transitions. [2021-11-03 03:56:46,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1942 transitions. [2021-11-03 03:56:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:46,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:46,817 INFO L513 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] [2021-11-03 03:56:46,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 03:56:46,817 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1201228785, now seen corresponding path program 1 times [2021-11-03 03:56:46,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:46,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582574590] [2021-11-03 03:56:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:46,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:46,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:46,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582574590] [2021-11-03 03:56:46,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582574590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:46,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:46,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:46,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19371783] [2021-11-03 03:56:46,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:46,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:46,965 INFO L87 Difference]: Start difference. First operand 1428 states and 1942 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:49,870 INFO L93 Difference]: Finished difference Result 2451 states and 3308 transitions. [2021-11-03 03:56:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:49,872 INFO L225 Difference]: With dead ends: 2451 [2021-11-03 03:56:49,872 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:49,873 INFO L786 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 [2021-11-03 03:56:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.387419585418156) internal successors, (1941), 1427 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1941 transitions. [2021-11-03 03:56:50,090 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1941 transitions. Word has length 112 [2021-11-03 03:56:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:50,090 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1941 transitions. [2021-11-03 03:56:50,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1941 transitions. [2021-11-03 03:56:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:50,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:50,093 INFO L513 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] [2021-11-03 03:56:50,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 03:56:50,093 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 497794837, now seen corresponding path program 1 times [2021-11-03 03:56:50,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:50,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183236184] [2021-11-03 03:56:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:50,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:50,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:50,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183236184] [2021-11-03 03:56:50,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183236184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:50,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:50,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:50,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796208176] [2021-11-03 03:56:50,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:50,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:50,243 INFO L87 Difference]: Start difference. First operand 1428 states and 1941 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:53,092 INFO L93 Difference]: Finished difference Result 2457 states and 3313 transitions. [2021-11-03 03:56:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:53,095 INFO L225 Difference]: With dead ends: 2457 [2021-11-03 03:56:53,095 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:53,095 INFO L786 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 [2021-11-03 03:56:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3867047891350965) internal successors, (1940), 1427 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1940 transitions. [2021-11-03 03:56:53,306 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1940 transitions. Word has length 112 [2021-11-03 03:56:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:53,306 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1940 transitions. [2021-11-03 03:56:53,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1940 transitions. [2021-11-03 03:56:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:53,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:53,310 INFO L513 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] [2021-11-03 03:56:53,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 03:56:53,310 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1476130129, now seen corresponding path program 1 times [2021-11-03 03:56:53,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:53,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101251637] [2021-11-03 03:56:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:53,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:53,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:53,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101251637] [2021-11-03 03:56:53,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101251637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:53,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:53,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:53,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510466609] [2021-11-03 03:56:53,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:53,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:53,460 INFO L87 Difference]: Start difference. First operand 1428 states and 1940 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:56,367 INFO L93 Difference]: Finished difference Result 2527 states and 3415 transitions. [2021-11-03 03:56:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:56:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:56,371 INFO L225 Difference]: With dead ends: 2527 [2021-11-03 03:56:56,371 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:56:56,372 INFO L786 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 [2021-11-03 03:56:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:56:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:56:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3859899928520372) internal successors, (1939), 1427 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1939 transitions. [2021-11-03 03:56:56,653 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1939 transitions. Word has length 112 [2021-11-03 03:56:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:56,655 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1939 transitions. [2021-11-03 03:56:56,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1939 transitions. [2021-11-03 03:56:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:56,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:56,657 INFO L513 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] [2021-11-03 03:56:56,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 03:56:56,658 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 865897012, now seen corresponding path program 1 times [2021-11-03 03:56:56,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:56,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507758952] [2021-11-03 03:56:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:56,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:56,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:56,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507758952] [2021-11-03 03:56:56,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507758952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:56,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:56,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:56:56,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835707006] [2021-11-03 03:56:56,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:56:56,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:56:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:56:56,785 INFO L87 Difference]: Start difference. First operand 1428 states and 1939 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:59,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:59,588 INFO L93 Difference]: Finished difference Result 2457 states and 3311 transitions. [2021-11-03 03:56:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:56:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:56:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:59,591 INFO L225 Difference]: With dead ends: 2457 [2021-11-03 03:56:59,591 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:56:59,592 INFO L786 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 [2021-11-03 03:56:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:56:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:56:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3852751965689778) internal successors, (1938), 1427 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1938 transitions. [2021-11-03 03:56:59,854 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1938 transitions. Word has length 112 [2021-11-03 03:56:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:59,855 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1938 transitions. [2021-11-03 03:56:59,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1938 transitions. [2021-11-03 03:56:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:56:59,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:59,857 INFO L513 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] [2021-11-03 03:56:59,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 03:56:59,857 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:56:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash -986214715, now seen corresponding path program 1 times [2021-11-03 03:56:59,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:59,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113938130] [2021-11-03 03:56:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:59,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:59,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:00,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113938130] [2021-11-03 03:57:00,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113938130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:00,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:00,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:00,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019241647] [2021-11-03 03:57:00,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:00,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:00,010 INFO L87 Difference]: Start difference. First operand 1428 states and 1938 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:02,986 INFO L93 Difference]: Finished difference Result 2453 states and 3305 transitions. [2021-11-03 03:57:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:02,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:02,990 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:57:02,990 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:02,992 INFO L786 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 [2021-11-03 03:57:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3845604002859184) internal successors, (1937), 1427 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1937 transitions. [2021-11-03 03:57:03,253 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1937 transitions. Word has length 112 [2021-11-03 03:57:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:03,253 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1937 transitions. [2021-11-03 03:57:03,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1937 transitions. [2021-11-03 03:57:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:03,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:03,256 INFO L513 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] [2021-11-03 03:57:03,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 03:57:03,256 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1285263200, now seen corresponding path program 1 times [2021-11-03 03:57:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:03,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280109680] [2021-11-03 03:57:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:03,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:03,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:03,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280109680] [2021-11-03 03:57:03,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280109680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:03,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:03,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:03,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678026616] [2021-11-03 03:57:03,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:03,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:03,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:03,402 INFO L87 Difference]: Start difference. First operand 1428 states and 1937 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:06,485 INFO L93 Difference]: Finished difference Result 2453 states and 3304 transitions. [2021-11-03 03:57:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:06,492 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:57:06,492 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:06,493 INFO L786 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 [2021-11-03 03:57:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3838456040028593) internal successors, (1936), 1427 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1936 transitions. [2021-11-03 03:57:06,753 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1936 transitions. Word has length 112 [2021-11-03 03:57:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:06,753 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1936 transitions. [2021-11-03 03:57:06,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1936 transitions. [2021-11-03 03:57:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:06,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:06,756 INFO L513 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] [2021-11-03 03:57:06,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 03:57:06,756 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2038403798, now seen corresponding path program 1 times [2021-11-03 03:57:06,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:06,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308662912] [2021-11-03 03:57:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:06,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:06,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:06,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308662912] [2021-11-03 03:57:06,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308662912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:06,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:06,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:06,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529148643] [2021-11-03 03:57:06,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:06,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:06,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:06,917 INFO L87 Difference]: Start difference. First operand 1428 states and 1936 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:09,994 INFO L93 Difference]: Finished difference Result 2447 states and 3293 transitions. [2021-11-03 03:57:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:09,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:09,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:09,997 INFO L225 Difference]: With dead ends: 2447 [2021-11-03 03:57:09,997 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:09,998 INFO L786 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 [2021-11-03 03:57:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3831308077198) internal successors, (1935), 1427 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1935 transitions. [2021-11-03 03:57:10,258 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1935 transitions. Word has length 112 [2021-11-03 03:57:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:10,258 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1935 transitions. [2021-11-03 03:57:10,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1935 transitions. [2021-11-03 03:57:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:10,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:10,262 INFO L513 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] [2021-11-03 03:57:10,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 03:57:10,263 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash 905607109, now seen corresponding path program 1 times [2021-11-03 03:57:10,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:10,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241163887] [2021-11-03 03:57:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:10,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:10,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:10,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241163887] [2021-11-03 03:57:10,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241163887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:10,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:10,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:10,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680449700] [2021-11-03 03:57:10,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:10,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:10,412 INFO L87 Difference]: Start difference. First operand 1428 states and 1935 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:13,180 INFO L93 Difference]: Finished difference Result 2457 states and 3305 transitions. [2021-11-03 03:57:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:13,184 INFO L225 Difference]: With dead ends: 2457 [2021-11-03 03:57:13,185 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:13,186 INFO L786 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 [2021-11-03 03:57:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3824160114367405) internal successors, (1934), 1427 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1934 transitions. [2021-11-03 03:57:13,451 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1934 transitions. Word has length 112 [2021-11-03 03:57:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:13,451 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1934 transitions. [2021-11-03 03:57:13,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1934 transitions. [2021-11-03 03:57:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:13,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:13,455 INFO L513 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] [2021-11-03 03:57:13,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 03:57:13,456 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -946721092, now seen corresponding path program 1 times [2021-11-03 03:57:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:13,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600968335] [2021-11-03 03:57:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:13,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:13,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:13,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600968335] [2021-11-03 03:57:13,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600968335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:13,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:13,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:13,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176875198] [2021-11-03 03:57:13,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:13,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:13,613 INFO L87 Difference]: Start difference. First operand 1428 states and 1934 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:16,668 INFO L93 Difference]: Finished difference Result 2453 states and 3299 transitions. [2021-11-03 03:57:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:16,671 INFO L225 Difference]: With dead ends: 2453 [2021-11-03 03:57:16,671 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:16,672 INFO L786 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 [2021-11-03 03:57:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3817012151536812) internal successors, (1933), 1427 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1933 transitions. [2021-11-03 03:57:16,948 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1933 transitions. Word has length 112 [2021-11-03 03:57:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:16,949 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1933 transitions. [2021-11-03 03:57:16,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:16,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1933 transitions. [2021-11-03 03:57:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:16,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:16,951 INFO L513 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] [2021-11-03 03:57:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 03:57:16,951 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1012473610, now seen corresponding path program 1 times [2021-11-03 03:57:16,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:16,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994669168] [2021-11-03 03:57:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:16,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:17,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:17,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994669168] [2021-11-03 03:57:17,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994669168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:17,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:17,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:17,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555053453] [2021-11-03 03:57:17,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:17,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:17,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:17,102 INFO L87 Difference]: Start difference. First operand 1428 states and 1933 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:20,077 INFO L93 Difference]: Finished difference Result 2537 states and 3422 transitions. [2021-11-03 03:57:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:20,079 INFO L225 Difference]: With dead ends: 2537 [2021-11-03 03:57:20,079 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:57:20,079 INFO L786 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 [2021-11-03 03:57:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:57:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:57:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3802716225875626) internal successors, (1931), 1427 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1931 transitions. [2021-11-03 03:57:20,353 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1931 transitions. Word has length 112 [2021-11-03 03:57:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:20,353 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1931 transitions. [2021-11-03 03:57:20,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1931 transitions. [2021-11-03 03:57:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:20,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:20,355 INFO L513 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] [2021-11-03 03:57:20,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 03:57:20,355 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1650636604, now seen corresponding path program 1 times [2021-11-03 03:57:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:20,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552467340] [2021-11-03 03:57:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:20,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:20,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:20,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552467340] [2021-11-03 03:57:20,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552467340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:20,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:20,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:20,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040108609] [2021-11-03 03:57:20,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:20,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:20,498 INFO L87 Difference]: Start difference. First operand 1428 states and 1931 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:23,324 INFO L93 Difference]: Finished difference Result 2461 states and 3307 transitions. [2021-11-03 03:57:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:23,328 INFO L225 Difference]: With dead ends: 2461 [2021-11-03 03:57:23,328 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:23,329 INFO L786 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 [2021-11-03 03:57:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.378842030021444) internal successors, (1929), 1427 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1929 transitions. [2021-11-03 03:57:23,638 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1929 transitions. Word has length 112 [2021-11-03 03:57:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:23,638 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1929 transitions. [2021-11-03 03:57:23,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1929 transitions. [2021-11-03 03:57:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:23,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:23,640 INFO L513 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] [2021-11-03 03:57:23,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 03:57:23,641 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1161208882, now seen corresponding path program 1 times [2021-11-03 03:57:23,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:23,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416254616] [2021-11-03 03:57:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:23,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:23,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:23,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416254616] [2021-11-03 03:57:23,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416254616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:23,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:23,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:23,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158859772] [2021-11-03 03:57:23,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:23,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:23,786 INFO L87 Difference]: Start difference. First operand 1428 states and 1929 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:26,685 INFO L93 Difference]: Finished difference Result 2463 states and 3306 transitions. [2021-11-03 03:57:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:26,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:26,688 INFO L225 Difference]: With dead ends: 2463 [2021-11-03 03:57:26,689 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:26,689 INFO L786 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 [2021-11-03 03:57:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3774124374553252) internal successors, (1927), 1427 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1927 transitions. [2021-11-03 03:57:27,034 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1927 transitions. Word has length 112 [2021-11-03 03:57:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:27,034 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1927 transitions. [2021-11-03 03:57:27,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1927 transitions. [2021-11-03 03:57:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:27,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:27,036 INFO L513 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] [2021-11-03 03:57:27,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 03:57:27,036 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash -752363654, now seen corresponding path program 1 times [2021-11-03 03:57:27,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:27,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057103959] [2021-11-03 03:57:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:27,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:27,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:27,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057103959] [2021-11-03 03:57:27,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057103959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:27,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:27,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:27,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812110064] [2021-11-03 03:57:27,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:27,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:27,172 INFO L87 Difference]: Start difference. First operand 1428 states and 1927 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:30,312 INFO L93 Difference]: Finished difference Result 2537 states and 3411 transitions. [2021-11-03 03:57:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:57:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:30,317 INFO L225 Difference]: With dead ends: 2537 [2021-11-03 03:57:30,317 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:57:30,319 INFO L786 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 [2021-11-03 03:57:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:57:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:57:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3759828448892066) internal successors, (1925), 1427 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1925 transitions. [2021-11-03 03:57:30,668 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1925 transitions. Word has length 112 [2021-11-03 03:57:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:30,668 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1925 transitions. [2021-11-03 03:57:30,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1925 transitions. [2021-11-03 03:57:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:30,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:30,670 INFO L513 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] [2021-11-03 03:57:30,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 03:57:30,670 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1290310657, now seen corresponding path program 1 times [2021-11-03 03:57:30,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:30,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425501506] [2021-11-03 03:57:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:30,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:30,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:30,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425501506] [2021-11-03 03:57:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425501506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:30,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:30,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499574956] [2021-11-03 03:57:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:30,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:30,859 INFO L87 Difference]: Start difference. First operand 1428 states and 1925 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:33,946 INFO L93 Difference]: Finished difference Result 2457 states and 3297 transitions. [2021-11-03 03:57:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:33,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:33,950 INFO L225 Difference]: With dead ends: 2457 [2021-11-03 03:57:33,950 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:33,951 INFO L786 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 [2021-11-03 03:57:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.374553252323088) internal successors, (1923), 1427 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1923 transitions. [2021-11-03 03:57:34,266 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1923 transitions. Word has length 112 [2021-11-03 03:57:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:34,266 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1923 transitions. [2021-11-03 03:57:34,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1923 transitions. [2021-11-03 03:57:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:34,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:34,268 INFO L513 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] [2021-11-03 03:57:34,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 03:57:34,268 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1351588119, now seen corresponding path program 1 times [2021-11-03 03:57:34,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:34,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589027010] [2021-11-03 03:57:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:34,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:34,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:34,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589027010] [2021-11-03 03:57:34,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589027010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:34,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:34,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:34,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898392029] [2021-11-03 03:57:34,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:34,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:34,422 INFO L87 Difference]: Start difference. First operand 1428 states and 1923 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:37,245 INFO L93 Difference]: Finished difference Result 2461 states and 3299 transitions. [2021-11-03 03:57:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:37,247 INFO L225 Difference]: With dead ends: 2461 [2021-11-03 03:57:37,248 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:37,248 INFO L786 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 [2021-11-03 03:57:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3731236597569694) internal successors, (1921), 1427 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1921 transitions. [2021-11-03 03:57:37,489 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1921 transitions. Word has length 112 [2021-11-03 03:57:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:37,489 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1921 transitions. [2021-11-03 03:57:37,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1921 transitions. [2021-11-03 03:57:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:37,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:37,490 INFO L513 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] [2021-11-03 03:57:37,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 03:57:37,491 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -753396610, now seen corresponding path program 1 times [2021-11-03 03:57:37,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:37,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85503223] [2021-11-03 03:57:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:37,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:37,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:37,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85503223] [2021-11-03 03:57:37,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85503223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:37,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:37,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:37,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193936878] [2021-11-03 03:57:37,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:37,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:37,622 INFO L87 Difference]: Start difference. First operand 1428 states and 1921 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:40,220 INFO L93 Difference]: Finished difference Result 2463 states and 3296 transitions. [2021-11-03 03:57:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:40,223 INFO L225 Difference]: With dead ends: 2463 [2021-11-03 03:57:40,223 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:40,224 INFO L786 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 [2021-11-03 03:57:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3716940671908506) internal successors, (1919), 1427 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1919 transitions. [2021-11-03 03:57:40,509 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1919 transitions. Word has length 112 [2021-11-03 03:57:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:40,509 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1919 transitions. [2021-11-03 03:57:40,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1919 transitions. [2021-11-03 03:57:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:40,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:40,511 INFO L513 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] [2021-11-03 03:57:40,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 03:57:40,511 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1690130227, now seen corresponding path program 1 times [2021-11-03 03:57:40,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:40,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653505573] [2021-11-03 03:57:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:40,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:40,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:40,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653505573] [2021-11-03 03:57:40,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653505573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:40,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:40,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:40,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384530471] [2021-11-03 03:57:40,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:40,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:40,631 INFO L87 Difference]: Start difference. First operand 1428 states and 1919 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:43,363 INFO L93 Difference]: Finished difference Result 2461 states and 3291 transitions. [2021-11-03 03:57:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:43,371 INFO L225 Difference]: With dead ends: 2461 [2021-11-03 03:57:43,371 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:43,373 INFO L786 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 [2021-11-03 03:57:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3702644746247319) internal successors, (1917), 1427 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1917 transitions. [2021-11-03 03:57:43,658 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1917 transitions. Word has length 112 [2021-11-03 03:57:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:43,658 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1917 transitions. [2021-11-03 03:57:43,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1917 transitions. [2021-11-03 03:57:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:43,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:43,659 INFO L513 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] [2021-11-03 03:57:43,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 03:57:43,660 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1329319844, now seen corresponding path program 1 times [2021-11-03 03:57:43,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:43,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101731039] [2021-11-03 03:57:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:43,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:43,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:43,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101731039] [2021-11-03 03:57:43,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101731039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:43,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:43,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:43,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044213955] [2021-11-03 03:57:43,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:43,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:43,777 INFO L87 Difference]: Start difference. First operand 1428 states and 1917 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:46,289 INFO L93 Difference]: Finished difference Result 2557 states and 3420 transitions. [2021-11-03 03:57:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:57:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:46,292 INFO L225 Difference]: With dead ends: 2557 [2021-11-03 03:57:46,292 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:57:46,293 INFO L786 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 [2021-11-03 03:57:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:57:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:57:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3688348820586134) internal successors, (1915), 1427 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1915 transitions. [2021-11-03 03:57:46,567 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1915 transitions. Word has length 112 [2021-11-03 03:57:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1915 transitions. [2021-11-03 03:57:46,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1915 transitions. [2021-11-03 03:57:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:46,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:46,569 INFO L513 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] [2021-11-03 03:57:46,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 03:57:46,569 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash -545290686, now seen corresponding path program 1 times [2021-11-03 03:57:46,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:46,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668377128] [2021-11-03 03:57:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:46,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:46,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:46,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668377128] [2021-11-03 03:57:46,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668377128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:46,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:46,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:46,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555611005] [2021-11-03 03:57:46,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:46,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:46,679 INFO L87 Difference]: Start difference. First operand 1428 states and 1915 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:49,140 INFO L93 Difference]: Finished difference Result 2364 states and 3124 transitions. [2021-11-03 03:57:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:57:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:49,143 INFO L225 Difference]: With dead ends: 2364 [2021-11-03 03:57:49,143 INFO L226 Difference]: Without dead ends: 2252 [2021-11-03 03:57:49,143 INFO L786 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 [2021-11-03 03:57:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-03 03:57:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1428. [2021-11-03 03:57:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3674052894924946) internal successors, (1913), 1427 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1913 transitions. [2021-11-03 03:57:49,409 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1913 transitions. Word has length 112 [2021-11-03 03:57:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:49,409 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1913 transitions. [2021-11-03 03:57:49,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1913 transitions. [2021-11-03 03:57:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:49,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:49,410 INFO L513 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] [2021-11-03 03:57:49,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 03:57:49,411 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:49,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1366906416, now seen corresponding path program 1 times [2021-11-03 03:57:49,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:49,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793567455] [2021-11-03 03:57:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:49,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:49,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793567455] [2021-11-03 03:57:49,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793567455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:49,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:49,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:49,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681858885] [2021-11-03 03:57:49,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:49,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:49,506 INFO L87 Difference]: Start difference. First operand 1428 states and 1913 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:52,234 INFO L93 Difference]: Finished difference Result 2647 states and 3541 transitions. [2021-11-03 03:57:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:52,237 INFO L225 Difference]: With dead ends: 2647 [2021-11-03 03:57:52,237 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:57:52,238 INFO L786 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 [2021-11-03 03:57:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:57:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:57:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3659756969263759) internal successors, (1911), 1427 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1911 transitions. [2021-11-03 03:57:52,517 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1911 transitions. Word has length 112 [2021-11-03 03:57:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:52,517 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1911 transitions. [2021-11-03 03:57:52,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1911 transitions. [2021-11-03 03:57:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:52,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:52,519 INFO L513 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] [2021-11-03 03:57:52,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 03:57:52,519 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1858638162, now seen corresponding path program 1 times [2021-11-03 03:57:52,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:52,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334499239] [2021-11-03 03:57:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:52,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:52,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:52,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334499239] [2021-11-03 03:57:52,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334499239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:52,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071260337] [2021-11-03 03:57:52,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:52,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:52,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:52,637 INFO L87 Difference]: Start difference. First operand 1428 states and 1911 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:55,369 INFO L93 Difference]: Finished difference Result 2549 states and 3404 transitions. [2021-11-03 03:57:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:55,372 INFO L225 Difference]: With dead ends: 2549 [2021-11-03 03:57:55,372 INFO L226 Difference]: Without dead ends: 2389 [2021-11-03 03:57:55,373 INFO L786 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 [2021-11-03 03:57:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-03 03:57:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1428. [2021-11-03 03:57:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3645461043602574) internal successors, (1909), 1427 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1909 transitions. [2021-11-03 03:57:55,649 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1909 transitions. Word has length 112 [2021-11-03 03:57:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:55,650 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1909 transitions. [2021-11-03 03:57:55,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1909 transitions. [2021-11-03 03:57:55,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:55,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:55,651 INFO L513 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] [2021-11-03 03:57:55,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 03:57:55,652 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2027483906, now seen corresponding path program 1 times [2021-11-03 03:57:55,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:55,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457217316] [2021-11-03 03:57:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:55,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:55,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:55,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457217316] [2021-11-03 03:57:55,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457217316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:55,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:55,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:55,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322481306] [2021-11-03 03:57:55,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:55,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:55,786 INFO L87 Difference]: Start difference. First operand 1428 states and 1909 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:58,345 INFO L93 Difference]: Finished difference Result 2467 states and 3288 transitions. [2021-11-03 03:57:58,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:57:58,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:57:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:58,348 INFO L225 Difference]: With dead ends: 2467 [2021-11-03 03:57:58,348 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:57:58,349 INFO L786 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 [2021-11-03 03:57:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:57:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:57:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3631165117941386) internal successors, (1907), 1427 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1907 transitions. [2021-11-03 03:57:58,662 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1907 transitions. Word has length 112 [2021-11-03 03:57:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:58,662 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1907 transitions. [2021-11-03 03:57:58,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:57:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1907 transitions. [2021-11-03 03:57:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:57:58,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:57:58,664 INFO L513 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] [2021-11-03 03:57:58,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 03:57:58,665 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:57:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:57:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1914809708, now seen corresponding path program 1 times [2021-11-03 03:57:58,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:57:58,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928782408] [2021-11-03 03:57:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:57:58,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:57:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:57:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:57:58,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:57:58,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928782408] [2021-11-03 03:57:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928782408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:57:58,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:57:58,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:57:58,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78466303] [2021-11-03 03:57:58,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:57:58,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:57:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:57:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:57:58,778 INFO L87 Difference]: Start difference. First operand 1428 states and 1907 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:01,507 INFO L93 Difference]: Finished difference Result 2467 states and 3286 transitions. [2021-11-03 03:58:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:58:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:01,509 INFO L225 Difference]: With dead ends: 2467 [2021-11-03 03:58:01,509 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:58:01,510 INFO L786 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 [2021-11-03 03:58:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:58:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:58:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.36168691922802) internal successors, (1905), 1427 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1905 transitions. [2021-11-03 03:58:01,813 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1905 transitions. Word has length 112 [2021-11-03 03:58:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:01,814 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1905 transitions. [2021-11-03 03:58:01,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1905 transitions. [2021-11-03 03:58:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:58:01,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:01,815 INFO L513 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] [2021-11-03 03:58:01,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 03:58:01,815 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 529413222, now seen corresponding path program 1 times [2021-11-03 03:58:01,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:01,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873599925] [2021-11-03 03:58:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:01,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:01,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:01,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873599925] [2021-11-03 03:58:01,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873599925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:01,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:01,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:01,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709927768] [2021-11-03 03:58:01,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:01,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:01,942 INFO L87 Difference]: Start difference. First operand 1428 states and 1905 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:04,767 INFO L93 Difference]: Finished difference Result 2461 states and 3275 transitions. [2021-11-03 03:58:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:04,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:58:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:04,772 INFO L225 Difference]: With dead ends: 2461 [2021-11-03 03:58:04,772 INFO L226 Difference]: Without dead ends: 2341 [2021-11-03 03:58:04,774 INFO L786 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 [2021-11-03 03:58:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2021-11-03 03:58:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 1428. [2021-11-03 03:58:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3602573266619014) internal successors, (1903), 1427 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1903 transitions. [2021-11-03 03:58:05,105 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1903 transitions. Word has length 112 [2021-11-03 03:58:05,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:05,106 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1903 transitions. [2021-11-03 03:58:05,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1903 transitions. [2021-11-03 03:58:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 03:58:05,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:05,108 INFO L513 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] [2021-11-03 03:58:05,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 03:58:05,109 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1831211447, now seen corresponding path program 1 times [2021-11-03 03:58:05,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:05,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676714547] [2021-11-03 03:58:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:05,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:05,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:05,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676714547] [2021-11-03 03:58:05,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676714547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:05,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:05,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:05,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494995572] [2021-11-03 03:58:05,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:05,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:05,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:05,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:05,216 INFO L87 Difference]: Start difference. First operand 1428 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:08,048 INFO L93 Difference]: Finished difference Result 2631 states and 3511 transitions. [2021-11-03 03:58:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:08,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 03:58:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:08,051 INFO L225 Difference]: With dead ends: 2631 [2021-11-03 03:58:08,051 INFO L226 Difference]: Without dead ends: 2413 [2021-11-03 03:58:08,052 INFO L786 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 [2021-11-03 03:58:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-03 03:58:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1428. [2021-11-03 03:58:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1399 states have (on average 1.3588277340957826) internal successors, (1901), 1427 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1901 transitions. [2021-11-03 03:58:08,362 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1901 transitions. Word has length 112 [2021-11-03 03:58:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:08,362 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1901 transitions. [2021-11-03 03:58:08,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1901 transitions. [2021-11-03 03:58:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:58:08,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:08,364 INFO L513 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] [2021-11-03 03:58:08,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 03:58:08,364 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:08,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476011, now seen corresponding path program 1 times [2021-11-03 03:58:08,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:08,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738822609] [2021-11-03 03:58:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:08,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:08,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:08,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738822609] [2021-11-03 03:58:08,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738822609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:08,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:08,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:58:08,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015471693] [2021-11-03 03:58:08,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:58:08,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:58:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:58:08,764 INFO L87 Difference]: Start difference. First operand 1428 states and 1901 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:10,406 INFO L93 Difference]: Finished difference Result 1943 states and 2585 transitions. [2021-11-03 03:58:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:10,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 03:58:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:10,408 INFO L225 Difference]: With dead ends: 1943 [2021-11-03 03:58:10,408 INFO L226 Difference]: Without dead ends: 1676 [2021-11-03 03:58:10,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:58:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-11-03 03:58:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1265. [2021-11-03 03:58:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1237 states have (on average 1.3540824575586095) internal successors, (1675), 1264 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1675 transitions. [2021-11-03 03:58:10,706 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1675 transitions. Word has length 113 [2021-11-03 03:58:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:10,706 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1675 transitions. [2021-11-03 03:58:10,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1675 transitions. [2021-11-03 03:58:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:58:10,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:10,708 INFO L513 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] [2021-11-03 03:58:10,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 03:58:10,708 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash -403996378, now seen corresponding path program 1 times [2021-11-03 03:58:10,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:10,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46715475] [2021-11-03 03:58:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:10,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:11,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:11,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46715475] [2021-11-03 03:58:11,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46715475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:11,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:11,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:58:11,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005931383] [2021-11-03 03:58:11,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:58:11,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:58:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:58:11,130 INFO L87 Difference]: Start difference. First operand 1265 states and 1675 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:13,404 INFO L93 Difference]: Finished difference Result 1961 states and 2443 transitions. [2021-11-03 03:58:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 03:58:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:13,407 INFO L225 Difference]: With dead ends: 1961 [2021-11-03 03:58:13,407 INFO L226 Difference]: Without dead ends: 1654 [2021-11-03 03:58:13,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:58:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-11-03 03:58:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1062. [2021-11-03 03:58:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1040 states have (on average 1.3528846153846155) internal successors, (1407), 1061 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1407 transitions. [2021-11-03 03:58:13,729 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1407 transitions. Word has length 113 [2021-11-03 03:58:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:13,730 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1407 transitions. [2021-11-03 03:58:13,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1407 transitions. [2021-11-03 03:58:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:58:13,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:13,731 INFO L513 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] [2021-11-03 03:58:13,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 03:58:13,732 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1260578693, now seen corresponding path program 1 times [2021-11-03 03:58:13,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:13,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186160600] [2021-11-03 03:58:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:14,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:14,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186160600] [2021-11-03 03:58:14,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186160600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:14,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:14,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:58:14,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152776636] [2021-11-03 03:58:14,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:58:14,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:58:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:58:14,051 INFO L87 Difference]: Start difference. First operand 1062 states and 1407 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:16,298 INFO L93 Difference]: Finished difference Result 2110 states and 2807 transitions. [2021-11-03 03:58:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:16,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 03:58:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:16,300 INFO L225 Difference]: With dead ends: 2110 [2021-11-03 03:58:16,300 INFO L226 Difference]: Without dead ends: 2004 [2021-11-03 03:58:16,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:58:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-11-03 03:58:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1060. [2021-11-03 03:58:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3516377649325626) internal successors, (1403), 1059 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1403 transitions. [2021-11-03 03:58:16,582 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1403 transitions. Word has length 113 [2021-11-03 03:58:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:16,583 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1403 transitions. [2021-11-03 03:58:16,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1403 transitions. [2021-11-03 03:58:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:16,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:16,584 INFO L513 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] [2021-11-03 03:58:16,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 03:58:16,584 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1716325617, now seen corresponding path program 1 times [2021-11-03 03:58:16,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:16,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777963514] [2021-11-03 03:58:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:16,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:16,688 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:16,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777963514] [2021-11-03 03:58:16,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777963514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:16,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:16,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:16,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58282849] [2021-11-03 03:58:16,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:16,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:16,690 INFO L87 Difference]: Start difference. First operand 1060 states and 1403 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:18,685 INFO L93 Difference]: Finished difference Result 1830 states and 2403 transitions. [2021-11-03 03:58:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:18,691 INFO L225 Difference]: With dead ends: 1830 [2021-11-03 03:58:18,691 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:18,692 INFO L786 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 [2021-11-03 03:58:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3497109826589595) internal successors, (1401), 1059 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1401 transitions. [2021-11-03 03:58:18,980 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1401 transitions. Word has length 114 [2021-11-03 03:58:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:18,980 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1401 transitions. [2021-11-03 03:58:18,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1401 transitions. [2021-11-03 03:58:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:18,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:18,981 INFO L513 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] [2021-11-03 03:58:18,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 03:58:18,981 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1958502362, now seen corresponding path program 1 times [2021-11-03 03:58:18,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:18,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921141045] [2021-11-03 03:58:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:18,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:19,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:19,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921141045] [2021-11-03 03:58:19,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921141045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:19,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:19,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:19,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729327726] [2021-11-03 03:58:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:19,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:19,089 INFO L87 Difference]: Start difference. First operand 1060 states and 1401 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:21,007 INFO L93 Difference]: Finished difference Result 1834 states and 2405 transitions. [2021-11-03 03:58:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:21,009 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:21,009 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:21,010 INFO L786 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 [2021-11-03 03:58:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3477842003853564) internal successors, (1399), 1059 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1399 transitions. [2021-11-03 03:58:21,306 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1399 transitions. Word has length 114 [2021-11-03 03:58:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1399 transitions. [2021-11-03 03:58:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1399 transitions. [2021-11-03 03:58:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:21,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:21,307 INFO L513 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] [2021-11-03 03:58:21,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 03:58:21,309 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1309808286, now seen corresponding path program 1 times [2021-11-03 03:58:21,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:21,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182157042] [2021-11-03 03:58:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:21,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:21,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:21,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182157042] [2021-11-03 03:58:21,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182157042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:21,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:21,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:21,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371683663] [2021-11-03 03:58:21,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:21,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:21,415 INFO L87 Difference]: Start difference. First operand 1060 states and 1399 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:23,509 INFO L93 Difference]: Finished difference Result 1834 states and 2401 transitions. [2021-11-03 03:58:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:23,511 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:23,511 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:23,512 INFO L786 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 [2021-11-03 03:58:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3458574181117533) internal successors, (1397), 1059 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1397 transitions. [2021-11-03 03:58:23,810 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1397 transitions. Word has length 114 [2021-11-03 03:58:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:23,810 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1397 transitions. [2021-11-03 03:58:23,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1397 transitions. [2021-11-03 03:58:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:23,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:23,812 INFO L513 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] [2021-11-03 03:58:23,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 03:58:23,812 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1310344786, now seen corresponding path program 1 times [2021-11-03 03:58:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:23,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048018718] [2021-11-03 03:58:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:23,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:23,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:23,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048018718] [2021-11-03 03:58:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048018718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:23,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148517954] [2021-11-03 03:58:23,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:23,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:23,926 INFO L87 Difference]: Start difference. First operand 1060 states and 1397 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:25,902 INFO L93 Difference]: Finished difference Result 1912 states and 2524 transitions. [2021-11-03 03:58:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:25,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:25,905 INFO L225 Difference]: With dead ends: 1912 [2021-11-03 03:58:25,905 INFO L226 Difference]: Without dead ends: 1790 [2021-11-03 03:58:25,905 INFO L786 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 [2021-11-03 03:58:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-03 03:58:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1060. [2021-11-03 03:58:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3439306358381502) internal successors, (1395), 1059 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1395 transitions. [2021-11-03 03:58:26,251 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1395 transitions. Word has length 114 [2021-11-03 03:58:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:26,251 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1395 transitions. [2021-11-03 03:58:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1395 transitions. [2021-11-03 03:58:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:26,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:26,253 INFO L513 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] [2021-11-03 03:58:26,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 03:58:26,253 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -759029279, now seen corresponding path program 1 times [2021-11-03 03:58:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:26,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497154425] [2021-11-03 03:58:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:26,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:26,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:26,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497154425] [2021-11-03 03:58:26,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497154425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:26,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:26,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:26,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174736171] [2021-11-03 03:58:26,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:26,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:26,363 INFO L87 Difference]: Start difference. First operand 1060 states and 1395 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:28,380 INFO L93 Difference]: Finished difference Result 1731 states and 2257 transitions. [2021-11-03 03:58:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:28,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:28,382 INFO L225 Difference]: With dead ends: 1731 [2021-11-03 03:58:28,382 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:28,382 INFO L786 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 [2021-11-03 03:58:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.342003853564547) internal successors, (1393), 1059 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1393 transitions. [2021-11-03 03:58:28,685 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1393 transitions. Word has length 114 [2021-11-03 03:58:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:28,685 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1393 transitions. [2021-11-03 03:58:28,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1393 transitions. [2021-11-03 03:58:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:28,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:28,687 INFO L513 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] [2021-11-03 03:58:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 03:58:28,687 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1153167823, now seen corresponding path program 1 times [2021-11-03 03:58:28,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:28,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330813764] [2021-11-03 03:58:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:28,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:28,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:28,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330813764] [2021-11-03 03:58:28,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330813764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:28,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:28,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:28,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680510322] [2021-11-03 03:58:28,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:28,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:28,795 INFO L87 Difference]: Start difference. First operand 1060 states and 1393 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:30,889 INFO L93 Difference]: Finished difference Result 1807 states and 2373 transitions. [2021-11-03 03:58:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:58:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:30,891 INFO L225 Difference]: With dead ends: 1807 [2021-11-03 03:58:30,891 INFO L226 Difference]: Without dead ends: 1790 [2021-11-03 03:58:30,892 INFO L786 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 [2021-11-03 03:58:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-03 03:58:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1060. [2021-11-03 03:58:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3400770712909442) internal successors, (1391), 1059 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1391 transitions. [2021-11-03 03:58:31,216 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1391 transitions. Word has length 114 [2021-11-03 03:58:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:31,216 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1391 transitions. [2021-11-03 03:58:31,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1391 transitions. [2021-11-03 03:58:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:31,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:31,217 INFO L513 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] [2021-11-03 03:58:31,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 03:58:31,218 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -248950219, now seen corresponding path program 1 times [2021-11-03 03:58:31,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:31,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727629759] [2021-11-03 03:58:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:31,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:31,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:31,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727629759] [2021-11-03 03:58:31,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727629759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:31,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:31,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:31,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866730759] [2021-11-03 03:58:31,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:31,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:31,328 INFO L87 Difference]: Start difference. First operand 1060 states and 1391 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:33,347 INFO L93 Difference]: Finished difference Result 1834 states and 2393 transitions. [2021-11-03 03:58:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:33,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:33,349 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:33,349 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:33,349 INFO L786 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 [2021-11-03 03:58:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:33,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.3381502890173411) internal successors, (1389), 1059 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1389 transitions. [2021-11-03 03:58:33,645 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1389 transitions. Word has length 114 [2021-11-03 03:58:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:33,645 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1389 transitions. [2021-11-03 03:58:33,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1389 transitions. [2021-11-03 03:58:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:33,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:33,646 INFO L513 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] [2021-11-03 03:58:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-03 03:58:33,646 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1514165854, now seen corresponding path program 1 times [2021-11-03 03:58:33,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:33,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828868197] [2021-11-03 03:58:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:33,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:33,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:33,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828868197] [2021-11-03 03:58:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828868197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:33,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:33,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674675549] [2021-11-03 03:58:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:33,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:33,757 INFO L87 Difference]: Start difference. First operand 1060 states and 1389 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:35,883 INFO L93 Difference]: Finished difference Result 1731 states and 2251 transitions. [2021-11-03 03:58:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:35,885 INFO L225 Difference]: With dead ends: 1731 [2021-11-03 03:58:35,885 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:35,886 INFO L786 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 [2021-11-03 03:58:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1060. [2021-11-03 03:58:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1038 states have (on average 1.336223506743738) internal successors, (1387), 1059 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1387 transitions. [2021-11-03 03:58:36,204 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1387 transitions. Word has length 114 [2021-11-03 03:58:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:36,204 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1387 transitions. [2021-11-03 03:58:36,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1387 transitions. [2021-11-03 03:58:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:36,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:36,206 INFO L513 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] [2021-11-03 03:58:36,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-03 03:58:36,206 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash -728172644, now seen corresponding path program 1 times [2021-11-03 03:58:36,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:36,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595323154] [2021-11-03 03:58:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:36,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:36,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:36,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595323154] [2021-11-03 03:58:36,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595323154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:36,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:36,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:58:36,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500489050] [2021-11-03 03:58:36,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:58:36,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:36,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:58:36,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:58:36,402 INFO L87 Difference]: Start difference. First operand 1060 states and 1387 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:40,241 INFO L93 Difference]: Finished difference Result 2354 states and 3091 transitions. [2021-11-03 03:58:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 03:58:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:40,243 INFO L225 Difference]: With dead ends: 2354 [2021-11-03 03:58:40,243 INFO L226 Difference]: Without dead ends: 2250 [2021-11-03 03:58:40,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-03 03:58:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-03 03:58:40,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1068. [2021-11-03 03:58:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3336520076481835) internal successors, (1395), 1067 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1395 transitions. [2021-11-03 03:58:40,559 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1395 transitions. Word has length 114 [2021-11-03 03:58:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:40,559 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1395 transitions. [2021-11-03 03:58:40,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1395 transitions. [2021-11-03 03:58:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:40,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:40,561 INFO L513 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] [2021-11-03 03:58:40,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-03 03:58:40,562 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1656096971, now seen corresponding path program 1 times [2021-11-03 03:58:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46048732] [2021-11-03 03:58:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:40,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:40,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:40,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46048732] [2021-11-03 03:58:40,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46048732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:40,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:40,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:40,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387395944] [2021-11-03 03:58:40,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:40,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:40,736 INFO L87 Difference]: Start difference. First operand 1068 states and 1395 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:43,006 INFO L93 Difference]: Finished difference Result 1834 states and 2385 transitions. [2021-11-03 03:58:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:43,008 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:43,008 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:43,009 INFO L786 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 [2021-11-03 03:58:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3317399617590822) internal successors, (1393), 1067 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1393 transitions. [2021-11-03 03:58:43,344 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1393 transitions. Word has length 114 [2021-11-03 03:58:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:43,344 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1393 transitions. [2021-11-03 03:58:43,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1393 transitions. [2021-11-03 03:58:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:43,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:43,345 INFO L513 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] [2021-11-03 03:58:43,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-03 03:58:43,346 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1579404938, now seen corresponding path program 1 times [2021-11-03 03:58:43,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:43,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508658255] [2021-11-03 03:58:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:43,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:43,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:43,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508658255] [2021-11-03 03:58:43,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508658255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:43,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:43,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:43,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156688859] [2021-11-03 03:58:43,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:43,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:43,456 INFO L87 Difference]: Start difference. First operand 1068 states and 1393 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:45,558 INFO L93 Difference]: Finished difference Result 1830 states and 2377 transitions. [2021-11-03 03:58:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:45,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:45,561 INFO L225 Difference]: With dead ends: 1830 [2021-11-03 03:58:45,561 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:45,561 INFO L786 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 [2021-11-03 03:58:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3298279158699808) internal successors, (1391), 1067 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1391 transitions. [2021-11-03 03:58:45,870 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1391 transitions. Word has length 114 [2021-11-03 03:58:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:45,871 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1391 transitions. [2021-11-03 03:58:45,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1391 transitions. [2021-11-03 03:58:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:45,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:45,873 INFO L513 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] [2021-11-03 03:58:45,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-03 03:58:45,873 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 816296341, now seen corresponding path program 1 times [2021-11-03 03:58:45,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:45,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847993983] [2021-11-03 03:58:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:45,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:45,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:45,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847993983] [2021-11-03 03:58:45,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847993983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:45,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:45,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:45,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052976583] [2021-11-03 03:58:45,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:45,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:45,986 INFO L87 Difference]: Start difference. First operand 1068 states and 1391 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:48,065 INFO L93 Difference]: Finished difference Result 1834 states and 2379 transitions. [2021-11-03 03:58:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:48,068 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:48,068 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:48,068 INFO L786 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 [2021-11-03 03:58:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3279158699808795) internal successors, (1389), 1067 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1389 transitions. [2021-11-03 03:58:48,409 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1389 transitions. Word has length 114 [2021-11-03 03:58:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:48,409 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1389 transitions. [2021-11-03 03:58:48,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1389 transitions. [2021-11-03 03:58:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:48,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:48,411 INFO L513 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] [2021-11-03 03:58:48,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-03 03:58:48,411 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -448585646, now seen corresponding path program 1 times [2021-11-03 03:58:48,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:48,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977155806] [2021-11-03 03:58:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:48,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:48,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:48,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977155806] [2021-11-03 03:58:48,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977155806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:48,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:48,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:48,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4530865] [2021-11-03 03:58:48,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:48,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:48,537 INFO L87 Difference]: Start difference. First operand 1068 states and 1389 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:50,832 INFO L93 Difference]: Finished difference Result 1731 states and 2237 transitions. [2021-11-03 03:58:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:50,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:50,834 INFO L225 Difference]: With dead ends: 1731 [2021-11-03 03:58:50,834 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:50,835 INFO L786 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 [2021-11-03 03:58:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3260038240917782) internal successors, (1387), 1067 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1387 transitions. [2021-11-03 03:58:51,194 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1387 transitions. Word has length 114 [2021-11-03 03:58:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:51,194 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1387 transitions. [2021-11-03 03:58:51,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1387 transitions. [2021-11-03 03:58:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:51,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:51,196 INFO L513 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] [2021-11-03 03:58:51,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-03 03:58:51,197 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1464990417, now seen corresponding path program 1 times [2021-11-03 03:58:51,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:51,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136611895] [2021-11-03 03:58:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:51,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:51,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:51,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136611895] [2021-11-03 03:58:51,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136611895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:51,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:51,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:51,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400124886] [2021-11-03 03:58:51,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:51,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:51,315 INFO L87 Difference]: Start difference. First operand 1068 states and 1387 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:53,413 INFO L93 Difference]: Finished difference Result 1834 states and 2373 transitions. [2021-11-03 03:58:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:53,415 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:58:53,415 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:53,416 INFO L786 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 [2021-11-03 03:58:53,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3240917782026769) internal successors, (1385), 1067 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1385 transitions. [2021-11-03 03:58:53,757 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1385 transitions. Word has length 114 [2021-11-03 03:58:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:53,757 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1385 transitions. [2021-11-03 03:58:53,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1385 transitions. [2021-11-03 03:58:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:53,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:53,758 INFO L513 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] [2021-11-03 03:58:53,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-03 03:58:53,758 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -931195966, now seen corresponding path program 1 times [2021-11-03 03:58:53,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:53,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015232018] [2021-11-03 03:58:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:53,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:53,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:53,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015232018] [2021-11-03 03:58:53,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015232018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:53,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:53,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:53,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384885531] [2021-11-03 03:58:53,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:53,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:53,873 INFO L87 Difference]: Start difference. First operand 1068 states and 1385 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:56,112 INFO L93 Difference]: Finished difference Result 1830 states and 2365 transitions. [2021-11-03 03:58:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:56,114 INFO L225 Difference]: With dead ends: 1830 [2021-11-03 03:58:56,114 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:58:56,114 INFO L786 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 [2021-11-03 03:58:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:58:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:58:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3221797323135756) internal successors, (1383), 1067 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1383 transitions. [2021-11-03 03:58:56,444 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1383 transitions. Word has length 114 [2021-11-03 03:58:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:56,445 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1383 transitions. [2021-11-03 03:58:56,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1383 transitions. [2021-11-03 03:58:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:56,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:56,446 INFO L513 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] [2021-11-03 03:58:56,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-03 03:58:56,446 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash -754723690, now seen corresponding path program 1 times [2021-11-03 03:58:56,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:56,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6144115] [2021-11-03 03:58:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:56,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:56,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:56,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6144115] [2021-11-03 03:58:56,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6144115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:56,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:56,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:56,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315923905] [2021-11-03 03:58:56,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:56,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:56,555 INFO L87 Difference]: Start difference. First operand 1068 states and 1383 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:58,843 INFO L93 Difference]: Finished difference Result 1926 states and 2505 transitions. [2021-11-03 03:58:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:58:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:58:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:58,845 INFO L225 Difference]: With dead ends: 1926 [2021-11-03 03:58:58,845 INFO L226 Difference]: Without dead ends: 1798 [2021-11-03 03:58:58,846 INFO L786 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 [2021-11-03 03:58:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-03 03:58:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1068. [2021-11-03 03:58:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3202676864244742) internal successors, (1381), 1067 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1381 transitions. [2021-11-03 03:58:59,193 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1381 transitions. Word has length 114 [2021-11-03 03:58:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:59,193 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1381 transitions. [2021-11-03 03:58:59,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:58:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1381 transitions. [2021-11-03 03:58:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:58:59,195 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:59,195 INFO L513 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] [2021-11-03 03:58:59,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-03 03:58:59,195 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:58:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1263034005, now seen corresponding path program 1 times [2021-11-03 03:58:59,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:58:59,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415753461] [2021-11-03 03:58:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:59,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:58:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:58:59,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:58:59,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415753461] [2021-11-03 03:58:59,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415753461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:59,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:59,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:58:59,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885321679] [2021-11-03 03:58:59,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:58:59,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:58:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:58:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:58:59,301 INFO L87 Difference]: Start difference. First operand 1068 states and 1381 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:01,508 INFO L93 Difference]: Finished difference Result 1838 states and 2370 transitions. [2021-11-03 03:59:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:01,510 INFO L225 Difference]: With dead ends: 1838 [2021-11-03 03:59:01,510 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:01,511 INFO L786 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 [2021-11-03 03:59:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.318355640535373) internal successors, (1379), 1067 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1379 transitions. [2021-11-03 03:59:01,877 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1379 transitions. Word has length 114 [2021-11-03 03:59:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:01,878 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1379 transitions. [2021-11-03 03:59:01,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1379 transitions. [2021-11-03 03:59:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:01,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:01,879 INFO L513 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] [2021-11-03 03:59:01,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-03 03:59:01,880 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1119736189, now seen corresponding path program 1 times [2021-11-03 03:59:01,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:01,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682520124] [2021-11-03 03:59:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:01,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:01,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:01,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682520124] [2021-11-03 03:59:01,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682520124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:01,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:01,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:01,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655362445] [2021-11-03 03:59:01,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:01,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:01,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:01,989 INFO L87 Difference]: Start difference. First operand 1068 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:04,204 INFO L93 Difference]: Finished difference Result 1926 states and 2499 transitions. [2021-11-03 03:59:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:59:04,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:04,206 INFO L225 Difference]: With dead ends: 1926 [2021-11-03 03:59:04,206 INFO L226 Difference]: Without dead ends: 1798 [2021-11-03 03:59:04,206 INFO L786 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 [2021-11-03 03:59:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-03 03:59:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1068. [2021-11-03 03:59:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3164435946462716) internal successors, (1377), 1067 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1377 transitions. [2021-11-03 03:59:04,555 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1377 transitions. Word has length 114 [2021-11-03 03:59:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:04,555 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1377 transitions. [2021-11-03 03:59:04,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1377 transitions. [2021-11-03 03:59:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:04,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:04,557 INFO L513 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] [2021-11-03 03:59:04,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-03 03:59:04,557 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1773855829, now seen corresponding path program 1 times [2021-11-03 03:59:04,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:04,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276960779] [2021-11-03 03:59:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:04,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:04,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:04,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276960779] [2021-11-03 03:59:04,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276960779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:04,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:04,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:04,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538255455] [2021-11-03 03:59:04,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:04,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:04,661 INFO L87 Difference]: Start difference. First operand 1068 states and 1377 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:06,762 INFO L93 Difference]: Finished difference Result 1834 states and 2361 transitions. [2021-11-03 03:59:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:06,763 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:59:06,764 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:06,764 INFO L786 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 [2021-11-03 03:59:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3145315487571703) internal successors, (1375), 1067 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1375 transitions. [2021-11-03 03:59:07,102 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1375 transitions. Word has length 114 [2021-11-03 03:59:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:07,102 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1375 transitions. [2021-11-03 03:59:07,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1375 transitions. [2021-11-03 03:59:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:07,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:07,104 INFO L513 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] [2021-11-03 03:59:07,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-03 03:59:07,104 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 507897430, now seen corresponding path program 1 times [2021-11-03 03:59:07,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:07,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167786745] [2021-11-03 03:59:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:07,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:07,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:07,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167786745] [2021-11-03 03:59:07,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167786745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:07,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:07,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:07,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672126953] [2021-11-03 03:59:07,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:07,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:07,199 INFO L87 Difference]: Start difference. First operand 1068 states and 1375 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:09,270 INFO L93 Difference]: Finished difference Result 1838 states and 2364 transitions. [2021-11-03 03:59:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:09,272 INFO L225 Difference]: With dead ends: 1838 [2021-11-03 03:59:09,272 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:09,273 INFO L786 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 [2021-11-03 03:59:09,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.312619502868069) internal successors, (1373), 1067 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1373 transitions. [2021-11-03 03:59:09,628 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1373 transitions. Word has length 114 [2021-11-03 03:59:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:09,628 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1373 transitions. [2021-11-03 03:59:09,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1373 transitions. [2021-11-03 03:59:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:09,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:09,629 INFO L513 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] [2021-11-03 03:59:09,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-03 03:59:09,629 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1233359702, now seen corresponding path program 1 times [2021-11-03 03:59:09,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:09,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847081222] [2021-11-03 03:59:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:09,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:09,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:09,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847081222] [2021-11-03 03:59:09,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847081222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:09,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:09,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:09,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679078997] [2021-11-03 03:59:09,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:09,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:09,739 INFO L87 Difference]: Start difference. First operand 1068 states and 1373 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:11,968 INFO L93 Difference]: Finished difference Result 1926 states and 2491 transitions. [2021-11-03 03:59:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:59:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:11,970 INFO L225 Difference]: With dead ends: 1926 [2021-11-03 03:59:11,970 INFO L226 Difference]: Without dead ends: 1798 [2021-11-03 03:59:11,971 INFO L786 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 [2021-11-03 03:59:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-03 03:59:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1068. [2021-11-03 03:59:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3107074569789674) internal successors, (1371), 1067 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1371 transitions. [2021-11-03 03:59:12,334 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1371 transitions. Word has length 114 [2021-11-03 03:59:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:12,334 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1371 transitions. [2021-11-03 03:59:12,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1371 transitions. [2021-11-03 03:59:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:12,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:12,335 INFO L513 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] [2021-11-03 03:59:12,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-03 03:59:12,336 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -678837400, now seen corresponding path program 1 times [2021-11-03 03:59:12,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:12,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307011526] [2021-11-03 03:59:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:12,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:12,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:12,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307011526] [2021-11-03 03:59:12,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307011526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:12,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:12,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:12,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422278029] [2021-11-03 03:59:12,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:12,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:12,432 INFO L87 Difference]: Start difference. First operand 1068 states and 1371 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:14,524 INFO L93 Difference]: Finished difference Result 1838 states and 2358 transitions. [2021-11-03 03:59:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:14,526 INFO L225 Difference]: With dead ends: 1838 [2021-11-03 03:59:14,526 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:14,527 INFO L786 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 [2021-11-03 03:59:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.308795411089866) internal successors, (1369), 1067 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1369 transitions. [2021-11-03 03:59:14,889 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1369 transitions. Word has length 114 [2021-11-03 03:59:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:14,889 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1369 transitions. [2021-11-03 03:59:14,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1369 transitions. [2021-11-03 03:59:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:14,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:14,890 INFO L513 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] [2021-11-03 03:59:14,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-03 03:59:14,890 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:14,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:14,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2038586924, now seen corresponding path program 1 times [2021-11-03 03:59:14,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:14,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788437573] [2021-11-03 03:59:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:14,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:14,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:14,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788437573] [2021-11-03 03:59:14,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788437573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:14,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:14,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:14,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72078533] [2021-11-03 03:59:14,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:14,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:14,980 INFO L87 Difference]: Start difference. First operand 1068 states and 1369 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:16,967 INFO L93 Difference]: Finished difference Result 1924 states and 2480 transitions. [2021-11-03 03:59:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:59:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:16,969 INFO L225 Difference]: With dead ends: 1924 [2021-11-03 03:59:16,969 INFO L226 Difference]: Without dead ends: 1798 [2021-11-03 03:59:16,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:59:16,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-03 03:59:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1068. [2021-11-03 03:59:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3068833652007648) internal successors, (1367), 1067 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1367 transitions. [2021-11-03 03:59:17,333 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1367 transitions. Word has length 114 [2021-11-03 03:59:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:17,333 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1367 transitions. [2021-11-03 03:59:17,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1367 transitions. [2021-11-03 03:59:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:17,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:17,334 INFO L513 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] [2021-11-03 03:59:17,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-03 03:59:17,335 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -168278721, now seen corresponding path program 1 times [2021-11-03 03:59:17,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:17,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367141697] [2021-11-03 03:59:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:17,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:17,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:17,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367141697] [2021-11-03 03:59:17,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367141697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:17,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:17,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:17,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82777502] [2021-11-03 03:59:17,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:17,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:17,420 INFO L87 Difference]: Start difference. First operand 1068 states and 1367 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:19,567 INFO L93 Difference]: Finished difference Result 1834 states and 2349 transitions. [2021-11-03 03:59:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:19,569 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:59:19,569 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:19,570 INFO L786 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 [2021-11-03 03:59:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3049713193116634) internal successors, (1365), 1067 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1365 transitions. [2021-11-03 03:59:19,960 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1365 transitions. Word has length 114 [2021-11-03 03:59:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:19,960 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1365 transitions. [2021-11-03 03:59:19,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1365 transitions. [2021-11-03 03:59:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:19,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:19,961 INFO L513 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] [2021-11-03 03:59:19,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-03 03:59:19,962 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1390479784, now seen corresponding path program 1 times [2021-11-03 03:59:19,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:19,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075137772] [2021-11-03 03:59:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:19,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:20,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:20,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075137772] [2021-11-03 03:59:20,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075137772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:20,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:20,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:20,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370374671] [2021-11-03 03:59:20,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:20,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:20,074 INFO L87 Difference]: Start difference. First operand 1068 states and 1365 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:22,347 INFO L93 Difference]: Finished difference Result 1834 states and 2347 transitions. [2021-11-03 03:59:22,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:22,350 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:59:22,350 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:22,350 INFO L786 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 [2021-11-03 03:59:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1068. [2021-11-03 03:59:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1046 states have (on average 1.3030592734225621) internal successors, (1363), 1067 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1363 transitions. [2021-11-03 03:59:22,714 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1363 transitions. Word has length 114 [2021-11-03 03:59:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:22,714 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1363 transitions. [2021-11-03 03:59:22,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1363 transitions. [2021-11-03 03:59:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:22,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:22,717 INFO L513 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] [2021-11-03 03:59:22,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-03 03:59:22,717 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash 124901704, now seen corresponding path program 1 times [2021-11-03 03:59:22,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:22,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492337442] [2021-11-03 03:59:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:22,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:22,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:22,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492337442] [2021-11-03 03:59:22,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492337442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:22,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:22,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 03:59:22,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279931226] [2021-11-03 03:59:22,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:59:22,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:59:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:22,922 INFO L87 Difference]: Start difference. First operand 1068 states and 1363 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:27,223 INFO L93 Difference]: Finished difference Result 2356 states and 3047 transitions. [2021-11-03 03:59:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 03:59:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:27,225 INFO L225 Difference]: With dead ends: 2356 [2021-11-03 03:59:27,226 INFO L226 Difference]: Without dead ends: 2244 [2021-11-03 03:59:27,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:59:27,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2021-11-03 03:59:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1076. [2021-11-03 03:59:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1054 states have (on average 1.3007590132827325) internal successors, (1371), 1075 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1371 transitions. [2021-11-03 03:59:27,585 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1371 transitions. Word has length 114 [2021-11-03 03:59:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:27,585 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1371 transitions. [2021-11-03 03:59:27,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1371 transitions. [2021-11-03 03:59:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:27,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:27,587 INFO L513 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] [2021-11-03 03:59:27,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-03 03:59:27,587 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2039173860, now seen corresponding path program 1 times [2021-11-03 03:59:27,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:27,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781646509] [2021-11-03 03:59:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:27,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:27,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:27,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781646509] [2021-11-03 03:59:27,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781646509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:27,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:27,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:27,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912006663] [2021-11-03 03:59:27,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:27,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:27,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:27,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:27,671 INFO L87 Difference]: Start difference. First operand 1076 states and 1371 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:29,879 INFO L93 Difference]: Finished difference Result 1834 states and 2343 transitions. [2021-11-03 03:59:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:29,882 INFO L225 Difference]: With dead ends: 1834 [2021-11-03 03:59:29,882 INFO L226 Difference]: Without dead ends: 1726 [2021-11-03 03:59:29,882 INFO L786 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 [2021-11-03 03:59:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-03 03:59:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1076. [2021-11-03 03:59:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1054 states have (on average 1.2988614800759013) internal successors, (1369), 1075 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1369 transitions. [2021-11-03 03:59:30,290 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1369 transitions. Word has length 114 [2021-11-03 03:59:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:30,290 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1369 transitions. [2021-11-03 03:59:30,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1369 transitions. [2021-11-03 03:59:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-03 03:59:30,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:30,292 INFO L513 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] [2021-11-03 03:59:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-03 03:59:30,292 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1742591701, now seen corresponding path program 1 times [2021-11-03 03:59:30,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:30,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816704009] [2021-11-03 03:59:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:30,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:30,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:30,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816704009] [2021-11-03 03:59:30,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816704009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:30,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:30,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:59:30,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805845485] [2021-11-03 03:59:30,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:59:30,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:59:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:59:30,623 INFO L87 Difference]: Start difference. First operand 1076 states and 1369 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:33,070 INFO L93 Difference]: Finished difference Result 2136 states and 2753 transitions. [2021-11-03 03:59:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:59:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-03 03:59:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:33,072 INFO L225 Difference]: With dead ends: 2136 [2021-11-03 03:59:33,072 INFO L226 Difference]: Without dead ends: 2030 [2021-11-03 03:59:33,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:59:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-11-03 03:59:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1074. [2021-11-03 03:59:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1052 states have (on average 1.2975285171102662) internal successors, (1365), 1073 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1365 transitions. [2021-11-03 03:59:33,450 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1365 transitions. Word has length 114 [2021-11-03 03:59:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:33,451 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1365 transitions. [2021-11-03 03:59:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1365 transitions. [2021-11-03 03:59:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 03:59:33,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:33,452 INFO L513 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] [2021-11-03 03:59:33,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-03 03:59:33,452 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1322812869, now seen corresponding path program 1 times [2021-11-03 03:59:33,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:33,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832476581] [2021-11-03 03:59:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:33,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:33,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:33,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832476581] [2021-11-03 03:59:33,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832476581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:33,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:33,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:33,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123821878] [2021-11-03 03:59:33,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:33,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:33,550 INFO L87 Difference]: Start difference. First operand 1074 states and 1365 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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) [2021-11-03 03:59:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:35,983 INFO L93 Difference]: Finished difference Result 1828 states and 2331 transitions. [2021-11-03 03:59:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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 [2021-11-03 03:59:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:35,985 INFO L225 Difference]: With dead ends: 1828 [2021-11-03 03:59:35,985 INFO L226 Difference]: Without dead ends: 1724 [2021-11-03 03:59:35,986 INFO L786 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 [2021-11-03 03:59:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-03 03:59:36,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1066. [2021-11-03 03:59:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1044 states have (on average 1.2978927203065134) internal successors, (1355), 1065 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1355 transitions. [2021-11-03 03:59:36,385 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1355 transitions. Word has length 115 [2021-11-03 03:59:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:36,385 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1355 transitions. [2021-11-03 03:59:36,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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) [2021-11-03 03:59:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1355 transitions. [2021-11-03 03:59:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-03 03:59:36,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:36,387 INFO L513 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] [2021-11-03 03:59:36,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-03 03:59:36,387 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -689181815, now seen corresponding path program 1 times [2021-11-03 03:59:36,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:36,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742229023] [2021-11-03 03:59:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:36,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:36,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:36,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742229023] [2021-11-03 03:59:36,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742229023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:36,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:36,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 03:59:36,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244769639] [2021-11-03 03:59:36,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:59:36,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:59:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:59:36,483 INFO L87 Difference]: Start difference. First operand 1066 states and 1355 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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) [2021-11-03 03:59:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:38,662 INFO L93 Difference]: Finished difference Result 1836 states and 2338 transitions. [2021-11-03 03:59:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:59:38,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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 [2021-11-03 03:59:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:38,664 INFO L225 Difference]: With dead ends: 1836 [2021-11-03 03:59:38,664 INFO L226 Difference]: Without dead ends: 1724 [2021-11-03 03:59:38,665 INFO L786 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 [2021-11-03 03:59:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-03 03:59:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1058. [2021-11-03 03:59:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1036 states have (on average 1.2982625482625483) internal successors, (1345), 1057 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1345 transitions. [2021-11-03 03:59:39,078 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1345 transitions. Word has length 115 [2021-11-03 03:59:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:39,079 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1345 transitions. [2021-11-03 03:59:39,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 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) [2021-11-03 03:59:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1345 transitions. [2021-11-03 03:59:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 03:59:39,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:39,080 INFO L513 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] [2021-11-03 03:59:39,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-03 03:59:39,080 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:39,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash 736668301, now seen corresponding path program 1 times [2021-11-03 03:59:39,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:39,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804139184] [2021-11-03 03:59:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:39,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:39,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:39,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804139184] [2021-11-03 03:59:39,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804139184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:39,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:39,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 03:59:39,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468827626] [2021-11-03 03:59:39,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:59:39,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:59:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:59:39,382 INFO L87 Difference]: Start difference. First operand 1058 states and 1345 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 03:59:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:41,995 INFO L93 Difference]: Finished difference Result 2170 states and 2802 transitions. [2021-11-03 03:59:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:59:41,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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 [2021-11-03 03:59:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:41,997 INFO L225 Difference]: With dead ends: 2170 [2021-11-03 03:59:41,997 INFO L226 Difference]: Without dead ends: 2030 [2021-11-03 03:59:41,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 03:59:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2021-11-03 03:59:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1022. [2021-11-03 03:59:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1000 states have (on average 1.295) internal successors, (1295), 1021 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1295 transitions. [2021-11-03 03:59:42,389 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1295 transitions. Word has length 116 [2021-11-03 03:59:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:42,389 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1295 transitions. [2021-11-03 03:59:42,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 03:59:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1295 transitions. [2021-11-03 03:59:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 03:59:42,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:42,391 INFO L513 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] [2021-11-03 03:59:42,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-03 03:59:42,391 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash 61393649, now seen corresponding path program 1 times [2021-11-03 03:59:42,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:42,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929937189] [2021-11-03 03:59:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:42,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:44,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:44,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929937189] [2021-11-03 03:59:44,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929937189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:44,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:44,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-03 03:59:44,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807777030] [2021-11-03 03:59:44,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 03:59:44,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 03:59:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 03:59:44,182 INFO L87 Difference]: Start difference. First operand 1022 states and 1295 transitions. Second operand has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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) [2021-11-03 03:59:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:55,512 INFO L93 Difference]: Finished difference Result 1924 states and 2466 transitions. [2021-11-03 03:59:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 03:59:55,512 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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 [2021-11-03 03:59:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:55,514 INFO L225 Difference]: With dead ends: 1924 [2021-11-03 03:59:55,514 INFO L226 Difference]: Without dead ends: 1817 [2021-11-03 03:59:55,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=656, Invalid=4314, Unknown=0, NotChecked=0, Total=4970 [2021-11-03 03:59:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2021-11-03 03:59:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1041. [2021-11-03 03:59:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1019 states have (on average 1.2944062806673209) internal successors, (1319), 1040 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1319 transitions. [2021-11-03 03:59:55,920 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1319 transitions. Word has length 116 [2021-11-03 03:59:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:55,920 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1319 transitions. [2021-11-03 03:59:55,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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) [2021-11-03 03:59:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1319 transitions. [2021-11-03 03:59:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 03:59:55,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:55,922 INFO L513 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] [2021-11-03 03:59:55,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-03 03:59:55,922 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 03:59:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash 672458114, now seen corresponding path program 1 times [2021-11-03 03:59:55,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:55,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209690635] [2021-11-03 03:59:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:55,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:57,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:57,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209690635] [2021-11-03 03:59:57,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209690635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:57,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:57,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-03 03:59:57,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445068767] [2021-11-03 03:59:57,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 03:59:57,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 03:59:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1312, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 03:59:57,746 INFO L87 Difference]: Start difference. First operand 1041 states and 1319 transitions. Second operand has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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) [2021-11-03 04:00:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:06,348 INFO L93 Difference]: Finished difference Result 1180 states and 1494 transitions. [2021-11-03 04:00:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 04:00:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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 [2021-11-03 04:00:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:06,350 INFO L225 Difference]: With dead ends: 1180 [2021-11-03 04:00:06,350 INFO L226 Difference]: Without dead ends: 1069 [2021-11-03 04:00:06,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=742, Invalid=4660, Unknown=0, NotChecked=0, Total=5402 [2021-11-03 04:00:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-03 04:00:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1047. [2021-11-03 04:00:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1025 states have (on average 1.2926829268292683) internal successors, (1325), 1046 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1325 transitions. [2021-11-03 04:00:06,749 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1325 transitions. Word has length 116 [2021-11-03 04:00:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:06,749 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 1325 transitions. [2021-11-03 04:00:06,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0526315789473686) internal successors, (116), 37 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) [2021-11-03 04:00:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1325 transitions. [2021-11-03 04:00:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:00:06,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:06,751 INFO L513 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] [2021-11-03 04:00:06,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-03 04:00:06,751 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1141163554, now seen corresponding path program 1 times [2021-11-03 04:00:06,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:06,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892131800] [2021-11-03 04:00:06,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:06,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:07,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:07,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892131800] [2021-11-03 04:00:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892131800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:07,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:07,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073762935] [2021-11-03 04:00:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:07,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:07,033 INFO L87 Difference]: Start difference. First operand 1047 states and 1325 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:08,163 INFO L93 Difference]: Finished difference Result 1731 states and 2216 transitions. [2021-11-03 04:00:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:00:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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 [2021-11-03 04:00:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:08,165 INFO L225 Difference]: With dead ends: 1731 [2021-11-03 04:00:08,165 INFO L226 Difference]: Without dead ends: 1256 [2021-11-03 04:00:08,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-03 04:00:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-11-03 04:00:08,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 676. [2021-11-03 04:00:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 660 states have (on average 1.2878787878787878) internal successors, (850), 675 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 850 transitions. [2021-11-03 04:00:08,475 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 850 transitions. Word has length 116 [2021-11-03 04:00:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:08,475 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 850 transitions. [2021-11-03 04:00:08,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 850 transitions. [2021-11-03 04:00:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:00:08,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:08,476 INFO L513 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] [2021-11-03 04:00:08,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-03 04:00:08,477 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash -673900795, now seen corresponding path program 1 times [2021-11-03 04:00:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:08,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570981077] [2021-11-03 04:00:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:08,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:08,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:08,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570981077] [2021-11-03 04:00:08,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570981077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:08,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:08,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768420006] [2021-11-03 04:00:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:08,770 INFO L87 Difference]: Start difference. First operand 676 states and 850 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:10,914 INFO L93 Difference]: Finished difference Result 1626 states and 2103 transitions. [2021-11-03 04:00:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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 [2021-11-03 04:00:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:10,915 INFO L225 Difference]: With dead ends: 1626 [2021-11-03 04:00:10,915 INFO L226 Difference]: Without dead ends: 1468 [2021-11-03 04:00:10,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-11-03 04:00:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 622. [2021-11-03 04:00:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 609 states have (on average 1.2791461412151068) internal successors, (779), 621 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 779 transitions. [2021-11-03 04:00:11,229 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 779 transitions. Word has length 116 [2021-11-03 04:00:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:11,229 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 779 transitions. [2021-11-03 04:00:11,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 779 transitions. [2021-11-03 04:00:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:00:11,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:11,230 INFO L513 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] [2021-11-03 04:00:11,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-03 04:00:11,230 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -615531059, now seen corresponding path program 1 times [2021-11-03 04:00:11,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:11,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858401556] [2021-11-03 04:00:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:11,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:11,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:11,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858401556] [2021-11-03 04:00:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858401556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:11,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:11,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:11,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921350806] [2021-11-03 04:00:11,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:11,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:11,553 INFO L87 Difference]: Start difference. First operand 622 states and 779 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:13,962 INFO L93 Difference]: Finished difference Result 1520 states and 1957 transitions. [2021-11-03 04:00:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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 [2021-11-03 04:00:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:13,964 INFO L225 Difference]: With dead ends: 1520 [2021-11-03 04:00:13,964 INFO L226 Difference]: Without dead ends: 1394 [2021-11-03 04:00:13,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-03 04:00:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 600. [2021-11-03 04:00:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 589 states have (on average 1.2716468590831917) internal successors, (749), 599 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 749 transitions. [2021-11-03 04:00:14,254 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 749 transitions. Word has length 116 [2021-11-03 04:00:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:14,255 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 749 transitions. [2021-11-03 04:00:14,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 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) [2021-11-03 04:00:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 749 transitions. [2021-11-03 04:00:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:00:14,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:14,255 INFO L513 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] [2021-11-03 04:00:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-03 04:00:14,256 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash 736410642, now seen corresponding path program 1 times [2021-11-03 04:00:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:14,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758806278] [2021-11-03 04:00:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:14,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:14,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:14,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758806278] [2021-11-03 04:00:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758806278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:14,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:14,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:00:14,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213696761] [2021-11-03 04:00:14,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:00:14,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:00:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:00:14,794 INFO L87 Difference]: Start difference. First operand 600 states and 749 transitions. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 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) [2021-11-03 04:00:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:17,558 INFO L93 Difference]: Finished difference Result 1588 states and 2045 transitions. [2021-11-03 04:00:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:00:17,559 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 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 [2021-11-03 04:00:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:17,560 INFO L225 Difference]: With dead ends: 1588 [2021-11-03 04:00:17,560 INFO L226 Difference]: Without dead ends: 1380 [2021-11-03 04:00:17,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:00:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-11-03 04:00:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 554. [2021-11-03 04:00:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 553 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 686 transitions. [2021-11-03 04:00:17,903 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 686 transitions. Word has length 116 [2021-11-03 04:00:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:17,903 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 686 transitions. [2021-11-03 04:00:17,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 16 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) [2021-11-03 04:00:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 686 transitions. [2021-11-03 04:00:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 04:00:17,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:17,904 INFO L513 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] [2021-11-03 04:00:17,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-03 04:00:17,904 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1386194619, now seen corresponding path program 1 times [2021-11-03 04:00:17,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:17,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060583663] [2021-11-03 04:00:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:17,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:18,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060583663] [2021-11-03 04:00:18,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060583663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 04:00:18,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945813336] [2021-11-03 04:00:18,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 04:00:18,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 04:00:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:00:18,268 INFO L87 Difference]: Start difference. First operand 554 states and 686 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 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) [2021-11-03 04:00:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,474 INFO L93 Difference]: Finished difference Result 1592 states and 2034 transitions. [2021-11-03 04:00:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:00:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 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 [2021-11-03 04:00:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,475 INFO L225 Difference]: With dead ends: 1592 [2021-11-03 04:00:20,475 INFO L226 Difference]: Without dead ends: 1280 [2021-11-03 04:00:20,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:00:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-03 04:00:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 346. [2021-11-03 04:00:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 341 states have (on average 1.2228739002932552) internal successors, (417), 345 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 417 transitions. [2021-11-03 04:00:20,740 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 417 transitions. Word has length 116 [2021-11-03 04:00:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:20,741 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 417 transitions. [2021-11-03 04:00:20,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 12 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) [2021-11-03 04:00:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 417 transitions. [2021-11-03 04:00:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 04:00:20,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:20,741 INFO L513 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] [2021-11-03 04:00:20,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-03 04:00:20,741 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2011872188, now seen corresponding path program 1 times [2021-11-03 04:00:20,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:20,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570771873] [2021-11-03 04:00:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:20,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:20,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570771873] [2021-11-03 04:00:20,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570771873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 04:00:20,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692400448] [2021-11-03 04:00:20,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:00:20,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:00:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:00:20,922 INFO L87 Difference]: Start difference. First operand 346 states and 417 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 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) [2021-11-03 04:00:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:24,411 INFO L93 Difference]: Finished difference Result 1412 states and 1833 transitions. [2021-11-03 04:00:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:00:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 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 [2021-11-03 04:00:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:24,413 INFO L225 Difference]: With dead ends: 1412 [2021-11-03 04:00:24,413 INFO L226 Difference]: Without dead ends: 1278 [2021-11-03 04:00:24,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-03 04:00:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-03 04:00:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 354. [2021-11-03 04:00:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 349 states have (on average 1.2177650429799427) internal successors, (425), 353 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 425 transitions. [2021-11-03 04:00:24,714 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 425 transitions. Word has length 117 [2021-11-03 04:00:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:24,714 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 425 transitions. [2021-11-03 04:00:24,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 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) [2021-11-03 04:00:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 425 transitions. [2021-11-03 04:00:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 04:00:24,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:24,715 INFO L513 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] [2021-11-03 04:00:24,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-03 04:00:24,715 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash -849679846, now seen corresponding path program 1 times [2021-11-03 04:00:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:24,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925046954] [2021-11-03 04:00:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:24,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:25,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:25,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925046954] [2021-11-03 04:00:25,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925046954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:25,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:25,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 04:00:25,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117625020] [2021-11-03 04:00:25,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:00:25,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:00:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:00:25,262 INFO L87 Difference]: Start difference. First operand 354 states and 425 transitions. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 15 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) [2021-11-03 04:00:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:27,246 INFO L93 Difference]: Finished difference Result 786 states and 970 transitions. [2021-11-03 04:00:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 04:00:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 15 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 [2021-11-03 04:00:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:27,247 INFO L225 Difference]: With dead ends: 786 [2021-11-03 04:00:27,247 INFO L226 Difference]: Without dead ends: 678 [2021-11-03 04:00:27,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2021-11-03 04:00:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-03 04:00:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 352. [2021-11-03 04:00:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 347 states have (on average 1.2132564841498559) internal successors, (421), 351 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 421 transitions. [2021-11-03 04:00:27,526 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 421 transitions. Word has length 117 [2021-11-03 04:00:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 421 transitions. [2021-11-03 04:00:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 15 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) [2021-11-03 04:00:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 421 transitions. [2021-11-03 04:00:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 04:00:27,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:27,527 INFO L513 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] [2021-11-03 04:00:27,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-03 04:00:27,527 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1664770302, now seen corresponding path program 1 times [2021-11-03 04:00:27,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:27,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516731278] [2021-11-03 04:00:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:27,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:27,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:27,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516731278] [2021-11-03 04:00:27,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516731278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:27,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:27,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:27,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642412519] [2021-11-03 04:00:27,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:27,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:27,778 INFO L87 Difference]: Start difference. First operand 352 states and 421 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 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) [2021-11-03 04:00:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:29,224 INFO L93 Difference]: Finished difference Result 832 states and 1056 transitions. [2021-11-03 04:00:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:29,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 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 [2021-11-03 04:00:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:29,226 INFO L225 Difference]: With dead ends: 832 [2021-11-03 04:00:29,226 INFO L226 Difference]: Without dead ends: 708 [2021-11-03 04:00:29,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:00:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-11-03 04:00:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 332. [2021-11-03 04:00:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 328 states have (on average 1.201219512195122) internal successors, (394), 331 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 394 transitions. [2021-11-03 04:00:29,514 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 394 transitions. Word has length 117 [2021-11-03 04:00:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:29,514 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 394 transitions. [2021-11-03 04:00:29,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 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) [2021-11-03 04:00:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 394 transitions. [2021-11-03 04:00:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 04:00:29,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:29,515 INFO L513 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] [2021-11-03 04:00:29,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-03 04:00:29,515 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1117885967, now seen corresponding path program 1 times [2021-11-03 04:00:29,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:29,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406795844] [2021-11-03 04:00:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:29,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:30,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:30,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406795844] [2021-11-03 04:00:30,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406795844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:30,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:30,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 04:00:30,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200163090] [2021-11-03 04:00:30,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:00:30,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:00:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:00:30,180 INFO L87 Difference]: Start difference. First operand 332 states and 394 transitions. Second operand has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 16 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) [2021-11-03 04:00:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:32,909 INFO L93 Difference]: Finished difference Result 719 states and 884 transitions. [2021-11-03 04:00:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:00:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 16 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 [2021-11-03 04:00:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:32,910 INFO L225 Difference]: With dead ends: 719 [2021-11-03 04:00:32,910 INFO L226 Difference]: Without dead ends: 662 [2021-11-03 04:00:32,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 04:00:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-11-03 04:00:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 332. [2021-11-03 04:00:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 328 states have (on average 1.201219512195122) internal successors, (394), 331 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 394 transitions. [2021-11-03 04:00:33,201 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 394 transitions. Word has length 118 [2021-11-03 04:00:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:33,201 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 394 transitions. [2021-11-03 04:00:33,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 16 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) [2021-11-03 04:00:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 394 transitions. [2021-11-03 04:00:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 04:00:33,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:33,202 INFO L513 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] [2021-11-03 04:00:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-03 04:00:33,202 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -531832465, now seen corresponding path program 1 times [2021-11-03 04:00:33,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:33,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920719961] [2021-11-03 04:00:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:33,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:33,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:33,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920719961] [2021-11-03 04:00:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920719961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:33,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:00:33,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032800673] [2021-11-03 04:00:33,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:33,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:00:33,296 INFO L87 Difference]: Start difference. First operand 332 states and 394 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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) [2021-11-03 04:00:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:34,576 INFO L93 Difference]: Finished difference Result 718 states and 900 transitions. [2021-11-03 04:00:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:00:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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 [2021-11-03 04:00:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:34,578 INFO L225 Difference]: With dead ends: 718 [2021-11-03 04:00:34,578 INFO L226 Difference]: Without dead ends: 584 [2021-11-03 04:00:34,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:00:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-03 04:00:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 324. [2021-11-03 04:00:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.2) internal successors, (384), 323 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 384 transitions. [2021-11-03 04:00:34,887 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 384 transitions. Word has length 118 [2021-11-03 04:00:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:34,887 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 384 transitions. [2021-11-03 04:00:34,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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) [2021-11-03 04:00:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 384 transitions. [2021-11-03 04:00:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 04:00:34,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:34,888 INFO L513 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] [2021-11-03 04:00:34,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-03 04:00:34,888 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:34,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash 145239752, now seen corresponding path program 1 times [2021-11-03 04:00:34,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:34,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882729278] [2021-11-03 04:00:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:34,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:34,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:34,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882729278] [2021-11-03 04:00:34,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882729278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:34,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:34,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:00:34,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915978106] [2021-11-03 04:00:34,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:34,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:00:34,991 INFO L87 Difference]: Start difference. First operand 324 states and 384 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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) [2021-11-03 04:00:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:36,255 INFO L93 Difference]: Finished difference Result 593 states and 730 transitions. [2021-11-03 04:00:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:00:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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 [2021-11-03 04:00:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:36,256 INFO L225 Difference]: With dead ends: 593 [2021-11-03 04:00:36,256 INFO L226 Difference]: Without dead ends: 586 [2021-11-03 04:00:36,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:00:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-11-03 04:00:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 324. [2021-11-03 04:00:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.19375) internal successors, (382), 323 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 382 transitions. [2021-11-03 04:00:36,571 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 382 transitions. Word has length 118 [2021-11-03 04:00:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:36,571 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 382 transitions. [2021-11-03 04:00:36,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 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) [2021-11-03 04:00:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 382 transitions. [2021-11-03 04:00:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 04:00:36,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:36,572 INFO L513 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] [2021-11-03 04:00:36,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-03 04:00:36,572 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 633843631, now seen corresponding path program 1 times [2021-11-03 04:00:36,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:36,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479287878] [2021-11-03 04:00:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:36,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:36,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:36,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479287878] [2021-11-03 04:00:36,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479287878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:36,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:36,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:36,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119652297] [2021-11-03 04:00:36,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:36,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:36,840 INFO L87 Difference]: Start difference. First operand 324 states and 382 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-03 04:00:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:37,893 INFO L93 Difference]: Finished difference Result 543 states and 658 transitions. [2021-11-03 04:00:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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 [2021-11-03 04:00:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:37,894 INFO L225 Difference]: With dead ends: 543 [2021-11-03 04:00:37,895 INFO L226 Difference]: Without dead ends: 486 [2021-11-03 04:00:37,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-03 04:00:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 304. [2021-11-03 04:00:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 301 states have (on average 1.1926910299003322) internal successors, (359), 303 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 359 transitions. [2021-11-03 04:00:38,183 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 359 transitions. Word has length 119 [2021-11-03 04:00:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 359 transitions. [2021-11-03 04:00:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-03 04:00:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 359 transitions. [2021-11-03 04:00:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-03 04:00:38,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:38,184 INFO L513 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] [2021-11-03 04:00:38,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-03 04:00:38,184 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2078533446, now seen corresponding path program 1 times [2021-11-03 04:00:38,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:38,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587588781] [2021-11-03 04:00:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:38,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:38,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:38,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587588781] [2021-11-03 04:00:38,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587588781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:38,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:38,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:38,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598601374] [2021-11-03 04:00:38,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:38,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:38,463 INFO L87 Difference]: Start difference. First operand 304 states and 359 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-03 04:00:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:40,022 INFO L93 Difference]: Finished difference Result 684 states and 853 transitions. [2021-11-03 04:00:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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 [2021-11-03 04:00:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:40,023 INFO L225 Difference]: With dead ends: 684 [2021-11-03 04:00:40,023 INFO L226 Difference]: Without dead ends: 678 [2021-11-03 04:00:40,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-03 04:00:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 298. [2021-11-03 04:00:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 1.1891891891891893) internal successors, (352), 297 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 352 transitions. [2021-11-03 04:00:40,317 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 352 transitions. Word has length 119 [2021-11-03 04:00:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:40,317 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 352 transitions. [2021-11-03 04:00:40,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 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) [2021-11-03 04:00:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 352 transitions. [2021-11-03 04:00:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-03 04:00:40,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:40,318 INFO L513 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] [2021-11-03 04:00:40,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-03 04:00:40,318 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -742446088, now seen corresponding path program 1 times [2021-11-03 04:00:40,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:40,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671771732] [2021-11-03 04:00:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:40,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:40,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:40,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671771732] [2021-11-03 04:00:40,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671771732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:40,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:40,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 04:00:40,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997965743] [2021-11-03 04:00:40,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:40,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:40,609 INFO L87 Difference]: Start difference. First operand 298 states and 352 transitions. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 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) [2021-11-03 04:00:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:42,342 INFO L93 Difference]: Finished difference Result 772 states and 962 transitions. [2021-11-03 04:00:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:00:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 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 [2021-11-03 04:00:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:42,343 INFO L225 Difference]: With dead ends: 772 [2021-11-03 04:00:42,343 INFO L226 Difference]: Without dead ends: 748 [2021-11-03 04:00:42,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-03 04:00:42,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 274. [2021-11-03 04:00:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.1904761904761905) internal successors, (325), 273 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 325 transitions. [2021-11-03 04:00:42,645 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 325 transitions. Word has length 120 [2021-11-03 04:00:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:42,645 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 325 transitions. [2021-11-03 04:00:42,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 11 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) [2021-11-03 04:00:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 325 transitions. [2021-11-03 04:00:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 04:00:42,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:42,646 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:42,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-03 04:00:42,647 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1184257751, now seen corresponding path program 1 times [2021-11-03 04:00:42,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:42,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546800305] [2021-11-03 04:00:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:42,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:42,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:42,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546800305] [2021-11-03 04:00:42,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546800305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:42,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:42,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:42,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402109402] [2021-11-03 04:00:42,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:42,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:42,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:42,707 INFO L87 Difference]: Start difference. First operand 274 states and 325 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:43,138 INFO L93 Difference]: Finished difference Result 386 states and 475 transitions. [2021-11-03 04:00:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:43,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-03 04:00:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:43,139 INFO L225 Difference]: With dead ends: 386 [2021-11-03 04:00:43,139 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 04:00:43,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 04:00:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 323. [2021-11-03 04:00:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.2111801242236024) internal successors, (390), 322 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 390 transitions. [2021-11-03 04:00:43,525 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 390 transitions. Word has length 139 [2021-11-03 04:00:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:43,525 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 390 transitions. [2021-11-03 04:00:43,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 390 transitions. [2021-11-03 04:00:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-03 04:00:43,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:43,526 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:43,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-03 04:00:43,526 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1527983402, now seen corresponding path program 1 times [2021-11-03 04:00:43,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:43,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171097810] [2021-11-03 04:00:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:43,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:43,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:43,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171097810] [2021-11-03 04:00:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171097810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:43,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:43,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:43,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276372623] [2021-11-03 04:00:43,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:43,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:43,585 INFO L87 Difference]: Start difference. First operand 323 states and 390 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:44,294 INFO L93 Difference]: Finished difference Result 625 states and 796 transitions. [2021-11-03 04:00:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:44,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-03 04:00:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:44,295 INFO L225 Difference]: With dead ends: 625 [2021-11-03 04:00:44,295 INFO L226 Difference]: Without dead ends: 474 [2021-11-03 04:00:44,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-03 04:00:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2021-11-03 04:00:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2505446623093681) internal successors, (574), 459 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 574 transitions. [2021-11-03 04:00:45,006 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 574 transitions. Word has length 142 [2021-11-03 04:00:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:45,006 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 574 transitions. [2021-11-03 04:00:45,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 574 transitions. [2021-11-03 04:00:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-03 04:00:45,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:45,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:45,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-03 04:00:45,007 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash 529206757, now seen corresponding path program 1 times [2021-11-03 04:00:45,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:45,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867475141] [2021-11-03 04:00:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:45,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:45,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:45,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867475141] [2021-11-03 04:00:45,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867475141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:45,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:45,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:45,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865008671] [2021-11-03 04:00:45,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:45,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:45,077 INFO L87 Difference]: Start difference. First operand 460 states and 574 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:46,619 INFO L93 Difference]: Finished difference Result 1036 states and 1348 transitions. [2021-11-03 04:00:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-03 04:00:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:46,620 INFO L225 Difference]: With dead ends: 1036 [2021-11-03 04:00:46,620 INFO L226 Difference]: Without dead ends: 748 [2021-11-03 04:00:46,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-03 04:00:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 722. [2021-11-03 04:00:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.2815533980582525) internal successors, (924), 721 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 924 transitions. [2021-11-03 04:00:47,957 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 924 transitions. Word has length 145 [2021-11-03 04:00:47,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:47,958 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 924 transitions. [2021-11-03 04:00:47,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:47,958 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 924 transitions. [2021-11-03 04:00:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-03 04:00:47,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:47,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:47,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-03 04:00:47,958 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1168374263, now seen corresponding path program 1 times [2021-11-03 04:00:47,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:47,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423136626] [2021-11-03 04:00:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:47,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:48,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:48,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423136626] [2021-11-03 04:00:48,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423136626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:48,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:48,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:48,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202981964] [2021-11-03 04:00:48,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:48,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:48,020 INFO L87 Difference]: Start difference. First operand 722 states and 924 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:50,717 INFO L93 Difference]: Finished difference Result 1822 states and 2398 transitions. [2021-11-03 04:00:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:50,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-03 04:00:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:50,718 INFO L225 Difference]: With dead ends: 1822 [2021-11-03 04:00:50,718 INFO L226 Difference]: Without dead ends: 1272 [2021-11-03 04:00:50,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-11-03 04:00:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1222. [2021-11-03 04:00:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 1.3005733005733007) internal successors, (1588), 1221 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1588 transitions. [2021-11-03 04:00:53,333 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1588 transitions. Word has length 148 [2021-11-03 04:00:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:53,333 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1588 transitions. [2021-11-03 04:00:53,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1588 transitions. [2021-11-03 04:00:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-03 04:00:53,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:53,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:53,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-03 04:00:53,334 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:00:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1220875874, now seen corresponding path program 1 times [2021-11-03 04:00:53,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:53,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740193941] [2021-11-03 04:00:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:53,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:53,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:53,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740193941] [2021-11-03 04:00:53,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740193941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:53,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:53,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:53,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968982280] [2021-11-03 04:00:53,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:53,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:53,391 INFO L87 Difference]: Start difference. First operand 1222 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:58,740 INFO L93 Difference]: Finished difference Result 3322 states and 4390 transitions. [2021-11-03 04:00:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-03 04:00:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:58,743 INFO L225 Difference]: With dead ends: 3322 [2021-11-03 04:00:58,743 INFO L226 Difference]: Without dead ends: 2272 [2021-11-03 04:00:58,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-11-03 04:01:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2174. [2021-11-03 04:01:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 2173 states have (on average 1.3087896916705015) internal successors, (2844), 2173 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2844 transitions. [2021-11-03 04:01:03,973 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2844 transitions. Word has length 151 [2021-11-03 04:01:03,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:03,973 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 2844 transitions. [2021-11-03 04:01:03,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2844 transitions. [2021-11-03 04:01:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 04:01:03,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:03,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:03,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-03 04:01:03,974 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:01:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1510968446, now seen corresponding path program 1 times [2021-11-03 04:01:03,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:01:03,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549991480] [2021-11-03 04:01:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:03,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:01:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:04,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:01:04,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549991480] [2021-11-03 04:01:04,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549991480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:04,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:04,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:01:04,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60853550] [2021-11-03 04:01:04,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:01:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:01:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:01:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:04,027 INFO L87 Difference]: Start difference. First operand 2174 states and 2844 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:14,079 INFO L93 Difference]: Finished difference Result 6178 states and 8158 transitions. [2021-11-03 04:01:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:14,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-03 04:01:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:14,083 INFO L225 Difference]: With dead ends: 6178 [2021-11-03 04:01:14,083 INFO L226 Difference]: Without dead ends: 4176 [2021-11-03 04:01:14,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-11-03 04:01:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3982. [2021-11-03 04:01:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3981 states have (on average 1.3092187892489324) internal successors, (5212), 3981 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5212 transitions. [2021-11-03 04:01:24,007 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5212 transitions. Word has length 154 [2021-11-03 04:01:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:24,007 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 5212 transitions. [2021-11-03 04:01:24,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5212 transitions. [2021-11-03 04:01:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-03 04:01:24,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:24,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:24,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-03 04:01:24,009 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:01:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 59275489, now seen corresponding path program 1 times [2021-11-03 04:01:24,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:01:24,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315675883] [2021-11-03 04:01:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:24,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:01:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:24,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:01:24,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315675883] [2021-11-03 04:01:24,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315675883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:24,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:24,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:01:24,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325521709] [2021-11-03 04:01:24,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:01:24,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:01:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:01:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:24,062 INFO L87 Difference]: Start difference. First operand 3982 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:43,026 INFO L93 Difference]: Finished difference Result 11602 states and 15262 transitions. [2021-11-03 04:01:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-03 04:01:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:43,034 INFO L225 Difference]: With dead ends: 11602 [2021-11-03 04:01:43,034 INFO L226 Difference]: Without dead ends: 7792 [2021-11-03 04:01:43,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2021-11-03 04:02:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7406. [2021-11-03 04:02:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7406 states, 7405 states have (on average 1.3045239702903444) internal successors, (9660), 7405 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 9660 transitions. [2021-11-03 04:02:02,139 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 9660 transitions. Word has length 157 [2021-11-03 04:02:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:02,139 INFO L470 AbstractCegarLoop]: Abstraction has 7406 states and 9660 transitions. [2021-11-03 04:02:02,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 9660 transitions. [2021-11-03 04:02:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-03 04:02:02,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:02,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:02,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-03 04:02:02,140 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:02:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash -79513788, now seen corresponding path program 1 times [2021-11-03 04:02:02,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:02:02,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829632172] [2021-11-03 04:02:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:02,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:02:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:02,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:02:02,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829632172] [2021-11-03 04:02:02,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829632172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:02,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:02,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:02:02,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839494970] [2021-11-03 04:02:02,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:02:02,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:02:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:02:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:02:02,229 INFO L87 Difference]: Start difference. First operand 7406 states and 9660 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:00,231 INFO L93 Difference]: Finished difference Result 29917 states and 39321 transitions. [2021-11-03 04:03:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:03:00,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-03 04:03:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:00,256 INFO L225 Difference]: With dead ends: 29917 [2021-11-03 04:03:00,256 INFO L226 Difference]: Without dead ends: 22683 [2021-11-03 04:03:00,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:03:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22683 states. [2021-11-03 04:03:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22683 to 10088. [2021-11-03 04:03:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 10087 states have (on average 1.2996926737384753) internal successors, (13110), 10087 states have internal predecessors, (13110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 13110 transitions. [2021-11-03 04:03:27,085 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 13110 transitions. Word has length 160 [2021-11-03 04:03:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:27,085 INFO L470 AbstractCegarLoop]: Abstraction has 10088 states and 13110 transitions. [2021-11-03 04:03:27,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 13110 transitions. [2021-11-03 04:03:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-03 04:03:27,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:27,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:03:27,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-03 04:03:27,086 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:03:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash 462937350, now seen corresponding path program 1 times [2021-11-03 04:03:27,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:03:27,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083629763] [2021-11-03 04:03:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:27,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:03:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:27,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:03:27,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083629763] [2021-11-03 04:03:27,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083629763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:27,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:27,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 04:03:27,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376896948] [2021-11-03 04:03:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:03:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:03:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:03:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:03:27,266 INFO L87 Difference]: Start difference. First operand 10088 states and 13110 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:53,819 INFO L93 Difference]: Finished difference Result 20006 states and 26034 transitions. [2021-11-03 04:03:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:03:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-03 04:03:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:53,829 INFO L225 Difference]: With dead ends: 20006 [2021-11-03 04:03:53,829 INFO L226 Difference]: Without dead ends: 10090 [2021-11-03 04:03:53,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:03:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10090 states. [2021-11-03 04:04:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10090 to 10088. [2021-11-03 04:04:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 10087 states have (on average 1.29949439873104) internal successors, (13108), 10087 states have internal predecessors, (13108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 13108 transitions. [2021-11-03 04:04:20,923 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 13108 transitions. Word has length 162 [2021-11-03 04:04:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:04:20,923 INFO L470 AbstractCegarLoop]: Abstraction has 10088 states and 13108 transitions. [2021-11-03 04:04:20,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 13108 transitions. [2021-11-03 04:04:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-03 04:04:20,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:04:20,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:04:20,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-03 04:04:20,924 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:04:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:04:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -681570940, now seen corresponding path program 1 times [2021-11-03 04:04:20,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:04:20,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454555366] [2021-11-03 04:04:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:20,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:04:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:20,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:04:20,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454555366] [2021-11-03 04:04:20,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454555366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:04:20,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:04:20,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:04:20,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921920432] [2021-11-03 04:04:20,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:04:20,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:04:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:04:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:04:20,975 INFO L87 Difference]: Start difference. First operand 10088 states and 13108 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:54,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:04:54,528 INFO L93 Difference]: Finished difference Result 22630 states and 29486 transitions. [2021-11-03 04:04:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:04:54,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-03 04:04:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:04:54,545 INFO L225 Difference]: With dead ends: 22630 [2021-11-03 04:04:54,545 INFO L226 Difference]: Without dead ends: 12714 [2021-11-03 04:04:54,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:04:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12714 states. [2021-11-03 04:05:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12714 to 12712. [2021-11-03 04:05:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12712 states, 12711 states have (on average 1.2928959169223506) internal successors, (16434), 12711 states have internal predecessors, (16434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12712 states to 12712 states and 16434 transitions. [2021-11-03 04:05:27,037 INFO L78 Accepts]: Start accepts. Automaton has 12712 states and 16434 transitions. Word has length 162 [2021-11-03 04:05:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:27,037 INFO L470 AbstractCegarLoop]: Abstraction has 12712 states and 16434 transitions. [2021-11-03 04:05:27,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 12712 states and 16434 transitions. [2021-11-03 04:05:27,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-03 04:05:27,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:27,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:27,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-03 04:05:27,038 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:05:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1002220639, now seen corresponding path program 1 times [2021-11-03 04:05:27,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:05:27,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150041081] [2021-11-03 04:05:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:27,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:05:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:27,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:05:27,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150041081] [2021-11-03 04:05:27,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150041081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:05:27,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:05:27,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:05:27,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382963021] [2021-11-03 04:05:27,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:05:27,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:05:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:05:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:05:27,129 INFO L87 Difference]: Start difference. First operand 12712 states and 16434 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:06:14,663 INFO L93 Difference]: Finished difference Result 18510 states and 23589 transitions. [2021-11-03 04:06:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:06:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-03 04:06:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:06:14,685 INFO L225 Difference]: With dead ends: 18510 [2021-11-03 04:06:14,686 INFO L226 Difference]: Without dead ends: 18508 [2021-11-03 04:06:14,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:06:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2021-11-03 04:06:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 12712. [2021-11-03 04:06:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12712 states, 12711 states have (on average 1.277790889780505) internal successors, (16242), 12711 states have internal predecessors, (16242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12712 states to 12712 states and 16242 transitions. [2021-11-03 04:06:52,491 INFO L78 Accepts]: Start accepts. Automaton has 12712 states and 16242 transitions. Word has length 163 [2021-11-03 04:06:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:06:52,492 INFO L470 AbstractCegarLoop]: Abstraction has 12712 states and 16242 transitions. [2021-11-03 04:06:52,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:06:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12712 states and 16242 transitions. [2021-11-03 04:06:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-03 04:06:52,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:06:52,494 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:06:52,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-03 04:06:52,495 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-03 04:06:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:06:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 668026067, now seen corresponding path program 1 times [2021-11-03 04:06:52,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:06:52,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711092658] [2021-11-03 04:06:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:52,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:06:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-03 04:06:52,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:06:52,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711092658] [2021-11-03 04:06:52,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711092658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:06:52,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:06:52,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:06:52,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774649598] [2021-11-03 04:06:52,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:06:52,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:06:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:06:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:06:52,786 INFO L87 Difference]: Start difference. First operand 12712 states and 16242 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)