./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-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_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/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_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/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_9a251aeb-a985-44fa-8d58-af6850f11975/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 bf3e653d470f38ca10e6f2ef710928478301c2e1b39e054d852fd4b90e26a334 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:45:10,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:45:10,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:45:10,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:45:10,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:45:10,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:45:10,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:45:10,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:45:10,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:45:10,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:45:10,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:45:10,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:45:10,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:45:10,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:45:10,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:45:10,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:45:10,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:45:10,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:45:10,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:45:10,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:45:10,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:45:10,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:45:10,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:45:10,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:45:10,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:45:10,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:45:10,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:45:10,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:45:10,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:45:10,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:45:10,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:45:10,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:45:10,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:45:10,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:45:10,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:45:10,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:45:10,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:45:10,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:45:10,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:45:10,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:45:10,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:45:10,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:45:10,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:45:10,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:45:10,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:45:10,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:45:10,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:45:10,721 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:45:10,721 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:45:10,721 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:45:10,722 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:45:10,722 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:45:10,722 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:45:10,722 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:45:10,723 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:45:10,723 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:45:10,723 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:45:10,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:45:10,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:45:10,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:45:10,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:45:10,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:45:10,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:45:10,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:45:10,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:45:10,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:45:10,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:45:10,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:45:10,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:45:10,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:45:10,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:45:10,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:45:10,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:45:10,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:45:10,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:45:10,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:45:10,730 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:45:10,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:45:10,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:45:10,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:45:10,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:45:10,731 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_9a251aeb-a985-44fa-8d58-af6850f11975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf3e653d470f38ca10e6f2ef710928478301c2e1b39e054d852fd4b90e26a334 [2021-11-03 05:45:11,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:45:11,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:45:11,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:45:11,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:45:11,058 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:45:11,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:45:11,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/data/c3654dd36/f77547c7508142b3b172f20bc4bee7b5/FLAGe465c8908 [2021-11-03 05:45:12,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:45:12,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:45:12,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/data/c3654dd36/f77547c7508142b3b172f20bc4bee7b5/FLAGe465c8908 [2021-11-03 05:45:12,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/data/c3654dd36/f77547c7508142b3b172f20bc4bee7b5 [2021-11-03 05:45:12,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:45:12,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:45:12,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:45:12,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:45:12,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:45:12,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:45:12" (1/1) ... [2021-11-03 05:45:12,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fb875c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:12, skipping insertion in model container [2021-11-03 05:45:12,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:45:12" (1/1) ... [2021-11-03 05:45:12,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:45:12,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:45:14,026 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69564,69577] [2021-11-03 05:45:14,255 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[101232,101245] [2021-11-03 05:45:14,329 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[117050,117063] [2021-11-03 05:45:14,384 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124955,124968] [2021-11-03 05:45:14,404 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128881,128894] [2021-11-03 05:45:14,422 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132623,132636] [2021-11-03 05:45:14,608 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163781,163794] [2021-11-03 05:45:14,705 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[179384,179397] [2021-11-03 05:45:14,737 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[187284,187297] [2021-11-03 05:45:14,755 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[191205,191218] [2021-11-03 05:45:14,772 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194942,194955] [2021-11-03 05:45:14,842 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211727,211740] [2021-11-03 05:45:14,876 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219627,219640] [2021-11-03 05:45:14,894 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223548,223561] [2021-11-03 05:45:14,913 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[227285,227298] [2021-11-03 05:45:14,941 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231785,231798] [2021-11-03 05:45:14,959 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[235573,235586] [2021-11-03 05:45:14,978 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[239494,239507] [2021-11-03 05:45:14,995 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[243231,243244] [2021-11-03 05:45:15,012 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[247352,247365] [2021-11-03 05:45:15,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251105,251118] [2021-11-03 05:45:15,047 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[255022,255035] [2021-11-03 05:45:15,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:45:15,136 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:45:15,634 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[69564,69577] [2021-11-03 05:45:15,742 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[101232,101245] [2021-11-03 05:45:15,796 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[117050,117063] [2021-11-03 05:45:15,844 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[124955,124968] [2021-11-03 05:45:15,858 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[128881,128894] [2021-11-03 05:45:15,872 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132623,132636] [2021-11-03 05:45:15,983 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[163781,163794] [2021-11-03 05:45:16,045 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[179384,179397] [2021-11-03 05:45:16,072 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[187284,187297] [2021-11-03 05:45:16,086 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[191205,191218] [2021-11-03 05:45:16,100 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[194942,194955] [2021-11-03 05:45:16,162 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[211727,211740] [2021-11-03 05:45:16,189 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[219627,219640] [2021-11-03 05:45:16,203 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[223548,223561] [2021-11-03 05:45:16,217 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[227285,227298] [2021-11-03 05:45:16,235 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231785,231798] [2021-11-03 05:45:16,249 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[235573,235586] [2021-11-03 05:45:16,264 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[239494,239507] [2021-11-03 05:45:16,279 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[243231,243244] [2021-11-03 05:45:16,310 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[247352,247365] [2021-11-03 05:45:16,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251105,251118] [2021-11-03 05:45:16,342 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_9a251aeb-a985-44fa-8d58-af6850f11975/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[255022,255035] [2021-11-03 05:45:16,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:45:16,423 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:45:16,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16 WrapperNode [2021-11-03 05:45:16,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:45:16,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:45:16,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:45:16,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:45:16,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:16,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:16,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:45:16,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:45:16,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:45:16,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:45:16,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:16,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:16,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:16,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:17,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:17,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:17,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:17,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:45:17,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:45:17,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:45:17,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:45:17,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (1/1) ... [2021-11-03 05:45:17,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:45:17,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:45:17,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:45:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:45:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:45:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:45:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:45:17,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:45:24,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:45:24,756 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:45:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:24 BoogieIcfgContainer [2021-11-03 05:45:24,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:45:24,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:45:24,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:45:24,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:45:24,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:45:12" (1/3) ... [2021-11-03 05:45:24,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33151ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:24, skipping insertion in model container [2021-11-03 05:45:24,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:45:16" (2/3) ... [2021-11-03 05:45:24,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33151ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:24, skipping insertion in model container [2021-11-03 05:45:24,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:24" (3/3) ... [2021-11-03 05:45:24,774 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-03 05:45:24,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:45:24,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-03 05:45:24,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:45:24,862 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 05:45:24,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-03 05:45:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:45:24,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:24,966 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] [2021-11-03 05:45:24,967 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 474104121, now seen corresponding path program 1 times [2021-11-03 05:45:24,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:24,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409117212] [2021-11-03 05:45:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:25,744 INFO 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 05:45:25,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:25,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409117212] [2021-11-03 05:45:25,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409117212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:25,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:25,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:25,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122653379] [2021-11-03 05:45:25,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:25,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:25,788 INFO L87 Difference]: Start difference. First operand has 2311 states, 2288 states have (on average 1.8229895104895104) internal successors, (4171), 2310 states have internal predecessors, (4171), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:28,127 INFO L93 Difference]: Finished difference Result 2737 states and 4863 transitions. [2021-11-03 05:45:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 05:45:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:28,158 INFO L225 Difference]: With dead ends: 2737 [2021-11-03 05:45:28,158 INFO L226 Difference]: Without dead ends: 1585 [2021-11-03 05:45:28,167 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 05:45:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-03 05:45:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2021-11-03 05:45:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1563 states have (on average 1.3122200895713372) internal successors, (2051), 1584 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2051 transitions. [2021-11-03 05:45:28,331 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2051 transitions. Word has length 85 [2021-11-03 05:45:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:28,332 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 2051 transitions. [2021-11-03 05:45:28,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2051 transitions. [2021-11-03 05:45:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:45:28,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:28,342 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] [2021-11-03 05:45:28,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:45:28,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1379625602, now seen corresponding path program 1 times [2021-11-03 05:45:28,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:28,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14922457] [2021-11-03 05:45:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:28,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:28,562 INFO 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 05:45:28,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:28,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14922457] [2021-11-03 05:45:28,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14922457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:28,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:28,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:28,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363185383] [2021-11-03 05:45:28,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:28,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:28,568 INFO L87 Difference]: Start difference. First operand 1585 states and 2051 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:30,459 INFO L93 Difference]: Finished difference Result 2213 states and 2882 transitions. [2021-11-03 05:45:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 05:45:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:30,488 INFO L225 Difference]: With dead ends: 2213 [2021-11-03 05:45:30,488 INFO L226 Difference]: Without dead ends: 1457 [2021-11-03 05:45:30,490 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 05:45:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-03 05:45:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2021-11-03 05:45:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1435 states have (on average 1.3282229965156795) internal successors, (1906), 1456 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1906 transitions. [2021-11-03 05:45:30,613 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1906 transitions. Word has length 85 [2021-11-03 05:45:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:30,614 INFO L470 AbstractCegarLoop]: Abstraction has 1457 states and 1906 transitions. [2021-11-03 05:45:30,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1906 transitions. [2021-11-03 05:45:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:45:30,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:30,626 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] [2021-11-03 05:45:30,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:45:30,627 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:30,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -546397045, now seen corresponding path program 1 times [2021-11-03 05:45:30,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:30,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267309715] [2021-11-03 05:45:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:30,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:30,827 INFO 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 05:45:30,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:30,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267309715] [2021-11-03 05:45:30,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267309715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:30,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:30,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:30,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394826314] [2021-11-03 05:45:30,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:30,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:30,831 INFO L87 Difference]: Start difference. First operand 1457 states and 1906 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:33,050 INFO L93 Difference]: Finished difference Result 2628 states and 3458 transitions. [2021-11-03 05:45:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-03 05:45:33,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:33,067 INFO L225 Difference]: With dead ends: 2628 [2021-11-03 05:45:33,067 INFO L226 Difference]: Without dead ends: 1890 [2021-11-03 05:45:33,069 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 05:45:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-11-03 05:45:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1752. [2021-11-03 05:45:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1730 states have (on average 1.3739884393063584) internal successors, (2377), 1751 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2377 transitions. [2021-11-03 05:45:33,201 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2377 transitions. Word has length 85 [2021-11-03 05:45:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:33,204 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 2377 transitions. [2021-11-03 05:45:33,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2377 transitions. [2021-11-03 05:45:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:45:33,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:33,211 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] [2021-11-03 05:45:33,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:45:33,212 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 326947046, now seen corresponding path program 1 times [2021-11-03 05:45:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:33,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816845004] [2021-11-03 05:45:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:33,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:33,390 INFO 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 05:45:33,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:33,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816845004] [2021-11-03 05:45:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816845004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:33,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:33,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462164742] [2021-11-03 05:45:33,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:33,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:33,396 INFO L87 Difference]: Start difference. First operand 1752 states and 2377 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:34,665 INFO L93 Difference]: Finished difference Result 2441 states and 3305 transitions. [2021-11-03 05:45:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:34,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 05:45:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:34,677 INFO L225 Difference]: With dead ends: 2441 [2021-11-03 05:45:34,677 INFO L226 Difference]: Without dead ends: 1554 [2021-11-03 05:45:34,680 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 05:45:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-03 05:45:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-03 05:45:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1532 states have (on average 1.3870757180156659) internal successors, (2125), 1553 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2125 transitions. [2021-11-03 05:45:34,796 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2125 transitions. Word has length 86 [2021-11-03 05:45:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:34,797 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2125 transitions. [2021-11-03 05:45:34,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2125 transitions. [2021-11-03 05:45:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 05:45:34,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:34,810 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] [2021-11-03 05:45:34,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:45:34,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -379387896, now seen corresponding path program 1 times [2021-11-03 05:45:34,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:34,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223912645] [2021-11-03 05:45:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:34,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:34,962 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 05:45:34,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:34,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223912645] [2021-11-03 05:45:34,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223912645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:34,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:34,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:34,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640363464] [2021-11-03 05:45:34,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:34,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:34,981 INFO L87 Difference]: Start difference. First operand 1554 states and 2125 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:35,965 INFO L93 Difference]: Finished difference Result 1956 states and 2626 transitions. [2021-11-03 05:45:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 05:45:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:35,974 INFO L225 Difference]: With dead ends: 1956 [2021-11-03 05:45:35,975 INFO L226 Difference]: Without dead ends: 1195 [2021-11-03 05:45:35,977 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 05:45:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-03 05:45:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2021-11-03 05:45:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1173 states have (on average 1.392156862745098) internal successors, (1633), 1194 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1633 transitions. [2021-11-03 05:45:36,072 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1633 transitions. Word has length 87 [2021-11-03 05:45:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:36,072 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1633 transitions. [2021-11-03 05:45:36,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1633 transitions. [2021-11-03 05:45:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 05:45:36,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:36,077 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] [2021-11-03 05:45:36,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:45:36,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:36,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash -211366857, now seen corresponding path program 1 times [2021-11-03 05:45:36,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:36,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944490999] [2021-11-03 05:45:36,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:36,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:36,233 INFO 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 05:45:36,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:36,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944490999] [2021-11-03 05:45:36,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944490999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:36,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:36,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:45:36,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915892092] [2021-11-03 05:45:36,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:45:36,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:45:36,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:45:36,237 INFO L87 Difference]: Start difference. First operand 1195 states and 1633 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:36,937 INFO L93 Difference]: Finished difference Result 1426 states and 1892 transitions. [2021-11-03 05:45:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:45:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 05:45:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:36,945 INFO L225 Difference]: With dead ends: 1426 [2021-11-03 05:45:36,946 INFO L226 Difference]: Without dead ends: 842 [2021-11-03 05:45:36,950 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 05:45:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-03 05:45:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2021-11-03 05:45:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3926829268292682) internal successors, (1142), 841 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1142 transitions. [2021-11-03 05:45:37,007 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1142 transitions. Word has length 88 [2021-11-03 05:45:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:37,008 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1142 transitions. [2021-11-03 05:45:37,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1142 transitions. [2021-11-03 05:45:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:45:37,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:37,012 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] [2021-11-03 05:45:37,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:45:37,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:37,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash 328508839, now seen corresponding path program 1 times [2021-11-03 05:45:37,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:37,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659747887] [2021-11-03 05:45:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:37,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:37,248 INFO 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 05:45:37,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:37,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659747887] [2021-11-03 05:45:37,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659747887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:37,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:37,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:37,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480634966] [2021-11-03 05:45:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:37,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:37,253 INFO L87 Difference]: Start difference. First operand 842 states and 1142 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:39,337 INFO L93 Difference]: Finished difference Result 1468 states and 1971 transitions. [2021-11-03 05:45:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:45:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 05:45:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:39,350 INFO L225 Difference]: With dead ends: 1468 [2021-11-03 05:45:39,350 INFO L226 Difference]: Without dead ends: 1262 [2021-11-03 05:45:39,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:45:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-03 05:45:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 842. [2021-11-03 05:45:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3914634146341462) internal successors, (1141), 841 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1141 transitions. [2021-11-03 05:45:39,452 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1141 transitions. Word has length 89 [2021-11-03 05:45:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:39,453 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1141 transitions. [2021-11-03 05:45:39,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1141 transitions. [2021-11-03 05:45:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:45:39,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:39,457 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] [2021-11-03 05:45:39,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:45:39,457 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1669555108, now seen corresponding path program 1 times [2021-11-03 05:45:39,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:39,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051796813] [2021-11-03 05:45:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:39,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:39,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:39,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051796813] [2021-11-03 05:45:39,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051796813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:39,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:39,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:39,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383885324] [2021-11-03 05:45:39,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:39,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:39,652 INFO L87 Difference]: Start difference. First operand 842 states and 1141 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:41,581 INFO L93 Difference]: Finished difference Result 1407 states and 1864 transitions. [2021-11-03 05:45:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 05:45:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:41,594 INFO L225 Difference]: With dead ends: 1407 [2021-11-03 05:45:41,595 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:41,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:45:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3902439024390243) internal successors, (1140), 841 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1140 transitions. [2021-11-03 05:45:41,692 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1140 transitions. Word has length 89 [2021-11-03 05:45:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:41,693 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1140 transitions. [2021-11-03 05:45:41,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:41,693 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1140 transitions. [2021-11-03 05:45:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:45:41,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:41,696 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] [2021-11-03 05:45:41,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:45:41,697 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash 231777635, now seen corresponding path program 1 times [2021-11-03 05:45:41,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:41,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364615100] [2021-11-03 05:45:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:41,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:41,911 INFO 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 05:45:41,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:41,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364615100] [2021-11-03 05:45:41,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364615100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:41,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:41,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:45:41,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441099972] [2021-11-03 05:45:41,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:45:41,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:45:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:45:41,915 INFO L87 Difference]: Start difference. First operand 842 states and 1140 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:43,092 INFO L93 Difference]: Finished difference Result 1471 states and 1911 transitions. [2021-11-03 05:45:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:45:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 05:45:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:43,101 INFO L225 Difference]: With dead ends: 1471 [2021-11-03 05:45:43,101 INFO L226 Difference]: Without dead ends: 1107 [2021-11-03 05:45:43,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:45:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-03 05:45:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 842. [2021-11-03 05:45:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3890243902439023) internal successors, (1139), 841 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1139 transitions. [2021-11-03 05:45:43,199 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1139 transitions. Word has length 89 [2021-11-03 05:45:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:43,199 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1139 transitions. [2021-11-03 05:45:43,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1139 transitions. [2021-11-03 05:45:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:43,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:43,203 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] [2021-11-03 05:45:43,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:45:43,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:43,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1427714440, now seen corresponding path program 1 times [2021-11-03 05:45:43,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:43,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147450709] [2021-11-03 05:45:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:43,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:43,395 INFO 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 05:45:43,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:43,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147450709] [2021-11-03 05:45:43,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147450709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:43,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:43,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:43,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015515404] [2021-11-03 05:45:43,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:43,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:43,399 INFO L87 Difference]: Start difference. First operand 842 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:45,127 INFO L93 Difference]: Finished difference Result 1407 states and 1861 transitions. [2021-11-03 05:45:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:45,141 INFO L225 Difference]: With dead ends: 1407 [2021-11-03 05:45:45,142 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:45,143 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 05:45:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3865853658536584) internal successors, (1137), 841 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1137 transitions. [2021-11-03 05:45:45,252 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1137 transitions. Word has length 91 [2021-11-03 05:45:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:45,252 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1137 transitions. [2021-11-03 05:45:45,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1137 transitions. [2021-11-03 05:45:45,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:45,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:45,256 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] [2021-11-03 05:45:45,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:45:45,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1221078273, now seen corresponding path program 1 times [2021-11-03 05:45:45,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:45,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819584189] [2021-11-03 05:45:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:45,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:45,415 INFO 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 05:45:45,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:45,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819584189] [2021-11-03 05:45:45,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819584189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:45,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:45,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:45,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599241633] [2021-11-03 05:45:45,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:45,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:45,419 INFO L87 Difference]: Start difference. First operand 842 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:47,026 INFO L93 Difference]: Finished difference Result 1407 states and 1857 transitions. [2021-11-03 05:45:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:47,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:47,036 INFO L225 Difference]: With dead ends: 1407 [2021-11-03 05:45:47,038 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:47,039 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 05:45:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3841463414634145) internal successors, (1135), 841 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1135 transitions. [2021-11-03 05:45:47,140 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1135 transitions. Word has length 91 [2021-11-03 05:45:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:47,141 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1135 transitions. [2021-11-03 05:45:47,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1135 transitions. [2021-11-03 05:45:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:47,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:47,144 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] [2021-11-03 05:45:47,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:45:47,145 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash 207011855, now seen corresponding path program 1 times [2021-11-03 05:45:47,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:47,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469471055] [2021-11-03 05:45:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:47,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:47,332 INFO 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 05:45:47,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:47,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469471055] [2021-11-03 05:45:47,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469471055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:47,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:47,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:47,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262777675] [2021-11-03 05:45:47,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:47,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:47,335 INFO L87 Difference]: Start difference. First operand 842 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:49,341 INFO L93 Difference]: Finished difference Result 1687 states and 2274 transitions. [2021-11-03 05:45:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:45:49,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:49,364 INFO L225 Difference]: With dead ends: 1687 [2021-11-03 05:45:49,364 INFO L226 Difference]: Without dead ends: 1497 [2021-11-03 05:45:49,365 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 05:45:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-03 05:45:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-03 05:45:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3817073170731706) internal successors, (1133), 841 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1133 transitions. [2021-11-03 05:45:49,473 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1133 transitions. Word has length 91 [2021-11-03 05:45:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:49,473 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1133 transitions. [2021-11-03 05:45:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1133 transitions. [2021-11-03 05:45:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:49,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:49,477 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] [2021-11-03 05:45:49,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:45:49,478 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -982216986, now seen corresponding path program 1 times [2021-11-03 05:45:49,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:49,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764194289] [2021-11-03 05:45:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:49,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:49,635 INFO 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 05:45:49,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:49,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764194289] [2021-11-03 05:45:49,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764194289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:49,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:49,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:49,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898671027] [2021-11-03 05:45:49,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:49,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:49,639 INFO L87 Difference]: Start difference. First operand 842 states and 1133 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:50,869 INFO L93 Difference]: Finished difference Result 1288 states and 1734 transitions. [2021-11-03 05:45:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:45:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:50,874 INFO L225 Difference]: With dead ends: 1288 [2021-11-03 05:45:50,874 INFO L226 Difference]: Without dead ends: 942 [2021-11-03 05:45:50,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:45:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-03 05:45:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 842. [2021-11-03 05:45:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3792682926829267) internal successors, (1131), 841 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1131 transitions. [2021-11-03 05:45:50,977 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1131 transitions. Word has length 91 [2021-11-03 05:45:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:50,978 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1131 transitions. [2021-11-03 05:45:50,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1131 transitions. [2021-11-03 05:45:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:50,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:50,981 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] [2021-11-03 05:45:50,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:45:50,982 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 646324256, now seen corresponding path program 1 times [2021-11-03 05:45:50,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:50,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084400223] [2021-11-03 05:45:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:50,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:51,132 INFO 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 05:45:51,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:51,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084400223] [2021-11-03 05:45:51,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084400223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:51,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:51,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:51,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338122310] [2021-11-03 05:45:51,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:51,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:51,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:51,138 INFO L87 Difference]: Start difference. First operand 842 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:52,544 INFO L93 Difference]: Finished difference Result 1496 states and 1971 transitions. [2021-11-03 05:45:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:52,554 INFO L225 Difference]: With dead ends: 1496 [2021-11-03 05:45:52,554 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:52,555 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 05:45:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3780487804878048) internal successors, (1130), 841 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1130 transitions. [2021-11-03 05:45:52,671 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1130 transitions. Word has length 91 [2021-11-03 05:45:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:52,672 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1130 transitions. [2021-11-03 05:45:52,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1130 transitions. [2021-11-03 05:45:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:52,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:52,676 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] [2021-11-03 05:45:52,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:45:52,676 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2043183991, now seen corresponding path program 1 times [2021-11-03 05:45:52,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:52,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045055683] [2021-11-03 05:45:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:52,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:52,832 INFO 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 05:45:52,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:52,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045055683] [2021-11-03 05:45:52,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045055683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:52,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:52,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:52,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877224255] [2021-11-03 05:45:52,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:52,836 INFO L87 Difference]: Start difference. First operand 842 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:54,610 INFO L93 Difference]: Finished difference Result 1639 states and 2207 transitions. [2021-11-03 05:45:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:45:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:54,618 INFO L225 Difference]: With dead ends: 1639 [2021-11-03 05:45:54,618 INFO L226 Difference]: Without dead ends: 1497 [2021-11-03 05:45:54,619 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 05:45:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-03 05:45:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-03 05:45:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3768292682926828) internal successors, (1129), 841 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1129 transitions. [2021-11-03 05:45:54,733 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1129 transitions. Word has length 91 [2021-11-03 05:45:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:54,733 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1129 transitions. [2021-11-03 05:45:54,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1129 transitions. [2021-11-03 05:45:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:54,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:54,737 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] [2021-11-03 05:45:54,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:45:54,737 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash 850721804, now seen corresponding path program 1 times [2021-11-03 05:45:54,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:54,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930444121] [2021-11-03 05:45:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:54,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:54,882 INFO 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 05:45:54,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:54,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930444121] [2021-11-03 05:45:54,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930444121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:54,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:54,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:54,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875632033] [2021-11-03 05:45:54,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:54,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:54,886 INFO L87 Difference]: Start difference. First operand 842 states and 1129 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:56,334 INFO L93 Difference]: Finished difference Result 1499 states and 1971 transitions. [2021-11-03 05:45:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:56,344 INFO L225 Difference]: With dead ends: 1499 [2021-11-03 05:45:56,344 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:56,346 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 05:45:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3756097560975609) internal successors, (1128), 841 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1128 transitions. [2021-11-03 05:45:56,446 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1128 transitions. Word has length 91 [2021-11-03 05:45:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:56,446 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1128 transitions. [2021-11-03 05:45:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1128 transitions. [2021-11-03 05:45:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:56,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:56,450 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] [2021-11-03 05:45:56,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:45:56,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2041192084, now seen corresponding path program 1 times [2021-11-03 05:45:56,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:56,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553440506] [2021-11-03 05:45:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:56,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:56,591 INFO 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 05:45:56,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:56,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553440506] [2021-11-03 05:45:56,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553440506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:56,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:56,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:45:56,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724227295] [2021-11-03 05:45:56,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:45:56,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:45:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:45:56,594 INFO L87 Difference]: Start difference. First operand 842 states and 1128 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:58,192 INFO L93 Difference]: Finished difference Result 1499 states and 1969 transitions. [2021-11-03 05:45:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:45:58,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:45:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:58,198 INFO L225 Difference]: With dead ends: 1499 [2021-11-03 05:45:58,199 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:45:58,200 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 05:45:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:45:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:45:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3743902439024391) internal successors, (1127), 841 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1127 transitions. [2021-11-03 05:45:58,299 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1127 transitions. Word has length 91 [2021-11-03 05:45:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:58,300 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1127 transitions. [2021-11-03 05:45:58,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1127 transitions. [2021-11-03 05:45:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:45:58,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:58,302 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] [2021-11-03 05:45:58,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:45:58,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:45:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 282292973, now seen corresponding path program 1 times [2021-11-03 05:45:58,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:45:58,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217436703] [2021-11-03 05:45:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:58,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:45:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:58,570 INFO 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 05:45:58,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:45:58,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217436703] [2021-11-03 05:45:58,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217436703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:58,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:58,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:45:58,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735439513] [2021-11-03 05:45:58,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:45:58,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:45:58,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:45:58,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:45:58,573 INFO L87 Difference]: Start difference. First operand 842 states and 1127 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:02,111 INFO L93 Difference]: Finished difference Result 2199 states and 2944 transitions. [2021-11-03 05:46:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:46:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 05:46:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:02,123 INFO L225 Difference]: With dead ends: 2199 [2021-11-03 05:46:02,124 INFO L226 Difference]: Without dead ends: 2043 [2021-11-03 05:46:02,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:46:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-11-03 05:46:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 846. [2021-11-03 05:46:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 824 states have (on average 1.3725728155339805) internal successors, (1131), 845 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1131 transitions. [2021-11-03 05:46:02,262 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1131 transitions. Word has length 91 [2021-11-03 05:46:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:02,263 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 1131 transitions. [2021-11-03 05:46:02,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1131 transitions. [2021-11-03 05:46:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 05:46:02,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:02,266 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] [2021-11-03 05:46:02,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:46:02,267 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1639647339, now seen corresponding path program 1 times [2021-11-03 05:46:02,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:02,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416786045] [2021-11-03 05:46:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:02,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:02,410 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 05:46:02,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:02,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416786045] [2021-11-03 05:46:02,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416786045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:02,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:02,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:02,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045316532] [2021-11-03 05:46:02,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:02,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:02,414 INFO L87 Difference]: Start difference. First operand 846 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:04,455 INFO L93 Difference]: Finished difference Result 1653 states and 2215 transitions. [2021-11-03 05:46:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-03 05:46:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:04,465 INFO L225 Difference]: With dead ends: 1653 [2021-11-03 05:46:04,465 INFO L226 Difference]: Without dead ends: 1497 [2021-11-03 05:46:04,466 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 05:46:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-03 05:46:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-03 05:46:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3731707317073172) internal successors, (1126), 841 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1126 transitions. [2021-11-03 05:46:04,574 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1126 transitions. Word has length 92 [2021-11-03 05:46:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:04,575 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1126 transitions. [2021-11-03 05:46:04,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1126 transitions. [2021-11-03 05:46:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:04,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:04,578 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] [2021-11-03 05:46:04,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:46:04,579 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1474627327, now seen corresponding path program 1 times [2021-11-03 05:46:04,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:04,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458261636] [2021-11-03 05:46:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:04,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:04,734 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 05:46:04,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:04,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458261636] [2021-11-03 05:46:04,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458261636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:04,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:04,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:04,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997577487] [2021-11-03 05:46:04,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:04,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:04,737 INFO L87 Difference]: Start difference. First operand 842 states and 1126 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:06,875 INFO L93 Difference]: Finished difference Result 1622 states and 2166 transitions. [2021-11-03 05:46:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:06,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:06,881 INFO L225 Difference]: With dead ends: 1622 [2021-11-03 05:46:06,881 INFO L226 Difference]: Without dead ends: 1474 [2021-11-03 05:46:06,882 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 05:46:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-03 05:46:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 842. [2021-11-03 05:46:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3707317073170733) internal successors, (1124), 841 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1124 transitions. [2021-11-03 05:46:06,996 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1124 transitions. Word has length 93 [2021-11-03 05:46:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1124 transitions. [2021-11-03 05:46:06,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1124 transitions. [2021-11-03 05:46:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:06,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:07,000 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] [2021-11-03 05:46:07,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:46:07,000 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash -281811597, now seen corresponding path program 1 times [2021-11-03 05:46:07,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:07,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639665103] [2021-11-03 05:46:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:07,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:07,153 INFO 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 05:46:07,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:07,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639665103] [2021-11-03 05:46:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639665103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:07,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:07,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:07,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128645765] [2021-11-03 05:46:07,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:07,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:07,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:07,157 INFO L87 Difference]: Start difference. First operand 842 states and 1124 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:08,807 INFO L93 Difference]: Finished difference Result 1502 states and 1969 transitions. [2021-11-03 05:46:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:08,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:08,811 INFO L225 Difference]: With dead ends: 1502 [2021-11-03 05:46:08,812 INFO L226 Difference]: Without dead ends: 1402 [2021-11-03 05:46:08,813 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 05:46:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-11-03 05:46:08,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 842. [2021-11-03 05:46:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3682926829268294) internal successors, (1122), 841 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1122 transitions. [2021-11-03 05:46:08,919 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1122 transitions. Word has length 93 [2021-11-03 05:46:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:08,919 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1122 transitions. [2021-11-03 05:46:08,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1122 transitions. [2021-11-03 05:46:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:08,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:08,922 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] [2021-11-03 05:46:08,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:46:08,922 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -610424553, now seen corresponding path program 1 times [2021-11-03 05:46:08,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:08,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205563862] [2021-11-03 05:46:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:08,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:09,257 INFO 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 05:46:09,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:09,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205563862] [2021-11-03 05:46:09,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205563862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:09,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:09,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:46:09,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406885827] [2021-11-03 05:46:09,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:46:09,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:46:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:46:09,260 INFO L87 Difference]: Start difference. First operand 842 states and 1122 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:12,799 INFO L93 Difference]: Finished difference Result 2351 states and 3141 transitions. [2021-11-03 05:46:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:46:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:12,806 INFO L225 Difference]: With dead ends: 2351 [2021-11-03 05:46:12,806 INFO L226 Difference]: Without dead ends: 2129 [2021-11-03 05:46:12,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:46:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2021-11-03 05:46:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 850. [2021-11-03 05:46:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3647342995169083) internal successors, (1130), 849 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1130 transitions. [2021-11-03 05:46:12,948 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1130 transitions. Word has length 93 [2021-11-03 05:46:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:12,949 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1130 transitions. [2021-11-03 05:46:12,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1130 transitions. [2021-11-03 05:46:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:12,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:12,952 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] [2021-11-03 05:46:12,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:46:12,952 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -603748374, now seen corresponding path program 1 times [2021-11-03 05:46:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:12,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147864670] [2021-11-03 05:46:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:12,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:13,108 INFO 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 05:46:13,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:13,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147864670] [2021-11-03 05:46:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147864670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:13,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:13,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808327349] [2021-11-03 05:46:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:13,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:13,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:13,112 INFO L87 Difference]: Start difference. First operand 850 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:15,032 INFO L93 Difference]: Finished difference Result 1618 states and 2151 transitions. [2021-11-03 05:46:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:15,035 INFO L225 Difference]: With dead ends: 1618 [2021-11-03 05:46:15,035 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:15,036 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 05:46:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3623188405797102) internal successors, (1128), 849 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1128 transitions. [2021-11-03 05:46:15,151 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1128 transitions. Word has length 93 [2021-11-03 05:46:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:15,152 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1128 transitions. [2021-11-03 05:46:15,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1128 transitions. [2021-11-03 05:46:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:15,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:15,154 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] [2021-11-03 05:46:15,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:46:15,154 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:15,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash 302673136, now seen corresponding path program 1 times [2021-11-03 05:46:15,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:15,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333712081] [2021-11-03 05:46:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:15,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:15,297 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 05:46:15,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:15,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333712081] [2021-11-03 05:46:15,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333712081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:15,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:15,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:15,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539628353] [2021-11-03 05:46:15,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:15,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:15,301 INFO L87 Difference]: Start difference. First operand 850 states and 1128 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:16,841 INFO L93 Difference]: Finished difference Result 1506 states and 1966 transitions. [2021-11-03 05:46:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:16,845 INFO L225 Difference]: With dead ends: 1506 [2021-11-03 05:46:16,845 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 05:46:16,845 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 05:46:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 05:46:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 850. [2021-11-03 05:46:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3599033816425121) internal successors, (1126), 849 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1126 transitions. [2021-11-03 05:46:16,983 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1126 transitions. Word has length 93 [2021-11-03 05:46:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:16,984 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1126 transitions. [2021-11-03 05:46:16,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1126 transitions. [2021-11-03 05:46:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:16,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:16,987 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] [2021-11-03 05:46:16,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:46:16,987 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1988597603, now seen corresponding path program 1 times [2021-11-03 05:46:16,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:16,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716775325] [2021-11-03 05:46:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:16,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:17,144 INFO 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 05:46:17,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:17,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716775325] [2021-11-03 05:46:17,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716775325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:17,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:17,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:17,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881448032] [2021-11-03 05:46:17,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:17,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:17,147 INFO L87 Difference]: Start difference. First operand 850 states and 1126 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:18,961 INFO L93 Difference]: Finished difference Result 1618 states and 2146 transitions. [2021-11-03 05:46:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:18,964 INFO L225 Difference]: With dead ends: 1618 [2021-11-03 05:46:18,964 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:18,965 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 05:46:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.357487922705314) internal successors, (1124), 849 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1124 transitions. [2021-11-03 05:46:19,103 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1124 transitions. Word has length 93 [2021-11-03 05:46:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:19,103 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1124 transitions. [2021-11-03 05:46:19,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1124 transitions. [2021-11-03 05:46:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:19,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:19,105 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] [2021-11-03 05:46:19,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:46:19,106 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash 690949312, now seen corresponding path program 1 times [2021-11-03 05:46:19,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:19,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843638931] [2021-11-03 05:46:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:19,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:19,239 INFO 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 05:46:19,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:19,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843638931] [2021-11-03 05:46:19,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843638931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:19,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:19,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:19,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913145705] [2021-11-03 05:46:19,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:19,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:19,242 INFO L87 Difference]: Start difference. First operand 850 states and 1124 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:20,771 INFO L93 Difference]: Finished difference Result 1506 states and 1962 transitions. [2021-11-03 05:46:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:20,774 INFO L225 Difference]: With dead ends: 1506 [2021-11-03 05:46:20,774 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 05:46:20,775 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 05:46:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 05:46:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 850. [2021-11-03 05:46:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.355072463768116) internal successors, (1122), 849 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1122 transitions. [2021-11-03 05:46:20,892 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1122 transitions. Word has length 93 [2021-11-03 05:46:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:20,892 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1122 transitions. [2021-11-03 05:46:20,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1122 transitions. [2021-11-03 05:46:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:20,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:20,897 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] [2021-11-03 05:46:20,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:46:20,898 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 99757788, now seen corresponding path program 1 times [2021-11-03 05:46:20,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:20,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419531958] [2021-11-03 05:46:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:20,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:21,067 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 05:46:21,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:21,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419531958] [2021-11-03 05:46:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419531958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:21,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:21,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:21,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938924173] [2021-11-03 05:46:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:21,070 INFO L87 Difference]: Start difference. First operand 850 states and 1122 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:22,833 INFO L93 Difference]: Finished difference Result 1599 states and 2117 transitions. [2021-11-03 05:46:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:22,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:22,836 INFO L225 Difference]: With dead ends: 1599 [2021-11-03 05:46:22,837 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:22,837 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 05:46:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.353864734299517) internal successors, (1121), 849 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1121 transitions. [2021-11-03 05:46:22,961 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1121 transitions. Word has length 93 [2021-11-03 05:46:22,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:22,961 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1121 transitions. [2021-11-03 05:46:22,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1121 transitions. [2021-11-03 05:46:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:22,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:22,964 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] [2021-11-03 05:46:22,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:46:22,965 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1312261900, now seen corresponding path program 1 times [2021-11-03 05:46:22,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:22,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702217275] [2021-11-03 05:46:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:22,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:23,097 INFO 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 05:46:23,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:23,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702217275] [2021-11-03 05:46:23,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702217275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:23,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:23,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:23,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224597129] [2021-11-03 05:46:23,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:23,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:23,101 INFO L87 Difference]: Start difference. First operand 850 states and 1121 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:24,810 INFO L93 Difference]: Finished difference Result 1504 states and 1955 transitions. [2021-11-03 05:46:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:24,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:24,813 INFO L225 Difference]: With dead ends: 1504 [2021-11-03 05:46:24,813 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 05:46:24,814 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 05:46:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 05:46:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 850. [2021-11-03 05:46:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3526570048309179) internal successors, (1120), 849 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1120 transitions. [2021-11-03 05:46:24,960 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1120 transitions. Word has length 93 [2021-11-03 05:46:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:24,960 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1120 transitions. [2021-11-03 05:46:24,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1120 transitions. [2021-11-03 05:46:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:24,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:24,962 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] [2021-11-03 05:46:24,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:46:24,962 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 991764837, now seen corresponding path program 1 times [2021-11-03 05:46:24,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:24,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343225135] [2021-11-03 05:46:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:25,105 INFO 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 05:46:25,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:25,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343225135] [2021-11-03 05:46:25,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343225135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:25,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:25,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:25,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042303571] [2021-11-03 05:46:25,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:25,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:25,109 INFO L87 Difference]: Start difference. First operand 850 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:26,942 INFO L93 Difference]: Finished difference Result 1594 states and 2109 transitions. [2021-11-03 05:46:26,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:26,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:26,944 INFO L225 Difference]: With dead ends: 1594 [2021-11-03 05:46:26,944 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:26,945 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 05:46:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3514492753623188) internal successors, (1119), 849 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1119 transitions. [2021-11-03 05:46:27,068 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1119 transitions. Word has length 93 [2021-11-03 05:46:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:27,068 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1119 transitions. [2021-11-03 05:46:27,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1119 transitions. [2021-11-03 05:46:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:27,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:27,070 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] [2021-11-03 05:46:27,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:46:27,070 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1667821415, now seen corresponding path program 1 times [2021-11-03 05:46:27,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:27,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078169354] [2021-11-03 05:46:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:27,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:27,207 INFO 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 05:46:27,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:27,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078169354] [2021-11-03 05:46:27,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078169354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:27,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:27,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:27,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322433243] [2021-11-03 05:46:27,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:27,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:27,210 INFO L87 Difference]: Start difference. First operand 850 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:29,052 INFO L93 Difference]: Finished difference Result 1599 states and 2113 transitions. [2021-11-03 05:46:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:29,055 INFO L225 Difference]: With dead ends: 1599 [2021-11-03 05:46:29,055 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:29,056 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 05:46:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3502415458937198) internal successors, (1118), 849 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1118 transitions. [2021-11-03 05:46:29,179 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1118 transitions. Word has length 93 [2021-11-03 05:46:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:29,180 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1118 transitions. [2021-11-03 05:46:29,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1118 transitions. [2021-11-03 05:46:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:29,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:29,181 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] [2021-11-03 05:46:29,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:46:29,182 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:29,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash -170860907, now seen corresponding path program 1 times [2021-11-03 05:46:29,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:29,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849927562] [2021-11-03 05:46:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:29,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:46:29,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:29,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849927562] [2021-11-03 05:46:29,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849927562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:29,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:29,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:29,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994003686] [2021-11-03 05:46:29,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:29,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:29,317 INFO L87 Difference]: Start difference. First operand 850 states and 1118 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:30,845 INFO L93 Difference]: Finished difference Result 1504 states and 1951 transitions. [2021-11-03 05:46:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:30,850 INFO L225 Difference]: With dead ends: 1504 [2021-11-03 05:46:30,850 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 05:46:30,852 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 05:46:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 05:46:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 850. [2021-11-03 05:46:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3490338164251208) internal successors, (1117), 849 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1117 transitions. [2021-11-03 05:46:31,050 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1117 transitions. Word has length 93 [2021-11-03 05:46:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1117 transitions. [2021-11-03 05:46:31,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1117 transitions. [2021-11-03 05:46:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:31,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:31,054 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] [2021-11-03 05:46:31,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:46:31,054 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:31,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1449948456, now seen corresponding path program 1 times [2021-11-03 05:46:31,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:31,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748995376] [2021-11-03 05:46:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:31,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:31,206 INFO 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 05:46:31,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:31,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748995376] [2021-11-03 05:46:31,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748995376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:31,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:31,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:31,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396906218] [2021-11-03 05:46:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:31,210 INFO L87 Difference]: Start difference. First operand 850 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:32,831 INFO L93 Difference]: Finished difference Result 1608 states and 2119 transitions. [2021-11-03 05:46:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:32,835 INFO L225 Difference]: With dead ends: 1608 [2021-11-03 05:46:32,835 INFO L226 Difference]: Without dead ends: 1482 [2021-11-03 05:46:32,836 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 05:46:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-11-03 05:46:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 850. [2021-11-03 05:46:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3478260869565217) internal successors, (1116), 849 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1116 transitions. [2021-11-03 05:46:33,045 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1116 transitions. Word has length 93 [2021-11-03 05:46:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:33,046 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1116 transitions. [2021-11-03 05:46:33,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1116 transitions. [2021-11-03 05:46:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 05:46:33,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:33,048 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] [2021-11-03 05:46:33,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:46:33,048 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash -960925632, now seen corresponding path program 1 times [2021-11-03 05:46:33,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:33,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284910835] [2021-11-03 05:46:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:33,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:33,182 INFO 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 05:46:33,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:33,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284910835] [2021-11-03 05:46:33,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284910835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:33,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:33,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:33,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006475024] [2021-11-03 05:46:33,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:33,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:33,185 INFO L87 Difference]: Start difference. First operand 850 states and 1116 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:34,818 INFO L93 Difference]: Finished difference Result 1507 states and 1951 transitions. [2021-11-03 05:46:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:34,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 05:46:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:34,821 INFO L225 Difference]: With dead ends: 1507 [2021-11-03 05:46:34,821 INFO L226 Difference]: Without dead ends: 1410 [2021-11-03 05:46:34,821 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 05:46:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-03 05:46:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 850. [2021-11-03 05:46:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3466183574879227) internal successors, (1115), 849 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1115 transitions. [2021-11-03 05:46:34,973 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1115 transitions. Word has length 93 [2021-11-03 05:46:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:34,974 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1115 transitions. [2021-11-03 05:46:34,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1115 transitions. [2021-11-03 05:46:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 05:46:34,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:34,976 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] [2021-11-03 05:46:34,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:46:34,977 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash 15926189, now seen corresponding path program 1 times [2021-11-03 05:46:34,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:34,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179985512] [2021-11-03 05:46:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:34,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:35,109 INFO 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 05:46:35,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:35,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179985512] [2021-11-03 05:46:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179985512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:35,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:35,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:35,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092234329] [2021-11-03 05:46:35,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:35,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:35,112 INFO L87 Difference]: Start difference. First operand 850 states and 1115 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:36,963 INFO L93 Difference]: Finished difference Result 1719 states and 2274 transitions. [2021-11-03 05:46:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 05:46:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:36,967 INFO L225 Difference]: With dead ends: 1719 [2021-11-03 05:46:36,967 INFO L226 Difference]: Without dead ends: 1497 [2021-11-03 05:46:36,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:46:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-03 05:46:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 842. [2021-11-03 05:46:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 820 states have (on average 1.3475609756097562) internal successors, (1105), 841 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1105 transitions. [2021-11-03 05:46:37,188 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1105 transitions. Word has length 94 [2021-11-03 05:46:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:37,188 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1105 transitions. [2021-11-03 05:46:37,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1105 transitions. [2021-11-03 05:46:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 05:46:37,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:37,191 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] [2021-11-03 05:46:37,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 05:46:37,192 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1553487459, now seen corresponding path program 1 times [2021-11-03 05:46:37,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:37,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039217788] [2021-11-03 05:46:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:37,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:37,893 INFO 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 05:46:37,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:37,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039217788] [2021-11-03 05:46:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039217788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:37,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 05:46:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487974296] [2021-11-03 05:46:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:46:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:46:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:46:37,897 INFO L87 Difference]: Start difference. First operand 842 states and 1105 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:41,991 INFO L93 Difference]: Finished difference Result 2186 states and 2695 transitions. [2021-11-03 05:46:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:46:41,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 05:46:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:42,001 INFO L225 Difference]: With dead ends: 2186 [2021-11-03 05:46:42,001 INFO L226 Difference]: Without dead ends: 1882 [2021-11-03 05:46:42,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 05:46:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-11-03 05:46:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 630. [2021-11-03 05:46:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 614 states have (on average 1.3371335504885993) internal successors, (821), 629 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 821 transitions. [2021-11-03 05:46:42,161 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 821 transitions. Word has length 94 [2021-11-03 05:46:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:42,161 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 821 transitions. [2021-11-03 05:46:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 821 transitions. [2021-11-03 05:46:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:42,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:42,164 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] [2021-11-03 05:46:42,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 05:46:42,165 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 296209564, now seen corresponding path program 1 times [2021-11-03 05:46:42,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:42,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703069173] [2021-11-03 05:46:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:42,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:42,313 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 05:46:42,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:42,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703069173] [2021-11-03 05:46:42,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703069173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:42,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:42,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:42,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534081213] [2021-11-03 05:46:42,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:42,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:42,316 INFO L87 Difference]: Start difference. First operand 630 states and 821 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:43,757 INFO L93 Difference]: Finished difference Result 1246 states and 1632 transitions. [2021-11-03 05:46:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:43,762 INFO L225 Difference]: With dead ends: 1246 [2021-11-03 05:46:43,762 INFO L226 Difference]: Without dead ends: 1130 [2021-11-03 05:46:43,763 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 05:46:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-03 05:46:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 630. [2021-11-03 05:46:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 614 states have (on average 1.3338762214983713) internal successors, (819), 629 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 819 transitions. [2021-11-03 05:46:43,992 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 819 transitions. Word has length 95 [2021-11-03 05:46:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:43,993 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 819 transitions. [2021-11-03 05:46:43,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 819 transitions. [2021-11-03 05:46:43,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:43,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:43,996 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] [2021-11-03 05:46:43,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 05:46:43,996 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1335545213, now seen corresponding path program 1 times [2021-11-03 05:46:43,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:43,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73161042] [2021-11-03 05:46:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:43,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:44,140 INFO 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 05:46:44,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:44,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73161042] [2021-11-03 05:46:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73161042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:44,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:44,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:44,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429594092] [2021-11-03 05:46:44,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:44,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:44,145 INFO L87 Difference]: Start difference. First operand 630 states and 819 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:45,584 INFO L93 Difference]: Finished difference Result 1198 states and 1549 transitions. [2021-11-03 05:46:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:45,586 INFO L225 Difference]: With dead ends: 1198 [2021-11-03 05:46:45,586 INFO L226 Difference]: Without dead ends: 1098 [2021-11-03 05:46:45,586 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 05:46:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-03 05:46:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 630. [2021-11-03 05:46:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 614 states have (on average 1.3306188925081432) internal successors, (817), 629 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 817 transitions. [2021-11-03 05:46:45,790 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 817 transitions. Word has length 95 [2021-11-03 05:46:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:45,790 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 817 transitions. [2021-11-03 05:46:45,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 817 transitions. [2021-11-03 05:46:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:45,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:45,792 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] [2021-11-03 05:46:45,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 05:46:45,793 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -186851275, now seen corresponding path program 1 times [2021-11-03 05:46:45,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:45,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391837080] [2021-11-03 05:46:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:45,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:46,030 INFO 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 05:46:46,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:46,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391837080] [2021-11-03 05:46:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391837080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:46,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:46:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530044277] [2021-11-03 05:46:46,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:46:46,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:46:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:46:46,033 INFO L87 Difference]: Start difference. First operand 630 states and 817 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:49,146 INFO L93 Difference]: Finished difference Result 1924 states and 2536 transitions. [2021-11-03 05:46:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 05:46:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:49,149 INFO L225 Difference]: With dead ends: 1924 [2021-11-03 05:46:49,149 INFO L226 Difference]: Without dead ends: 1768 [2021-11-03 05:46:49,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:46:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-03 05:46:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 638. [2021-11-03 05:46:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3263665594855305) internal successors, (825), 637 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 825 transitions. [2021-11-03 05:46:49,345 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 825 transitions. Word has length 95 [2021-11-03 05:46:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:49,345 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 825 transitions. [2021-11-03 05:46:49,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 825 transitions. [2021-11-03 05:46:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:49,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:49,347 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] [2021-11-03 05:46:49,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 05:46:49,347 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1026660038, now seen corresponding path program 1 times [2021-11-03 05:46:49,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:49,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629951111] [2021-11-03 05:46:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:49,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:49,486 INFO 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 05:46:49,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:49,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629951111] [2021-11-03 05:46:49,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629951111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:49,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:49,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:49,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354415580] [2021-11-03 05:46:49,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:49,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:49,489 INFO L87 Difference]: Start difference. First operand 638 states and 825 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:51,001 INFO L93 Difference]: Finished difference Result 1254 states and 1636 transitions. [2021-11-03 05:46:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:51,005 INFO L225 Difference]: With dead ends: 1254 [2021-11-03 05:46:51,005 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:46:51,006 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 05:46:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:46:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:46:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3231511254019293) internal successors, (823), 637 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 823 transitions. [2021-11-03 05:46:51,266 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 823 transitions. Word has length 95 [2021-11-03 05:46:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:51,267 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 823 transitions. [2021-11-03 05:46:51,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 823 transitions. [2021-11-03 05:46:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:51,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:51,269 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] [2021-11-03 05:46:51,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 05:46:51,270 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash -605094739, now seen corresponding path program 1 times [2021-11-03 05:46:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:51,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75675028] [2021-11-03 05:46:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:51,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:46:51,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:51,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75675028] [2021-11-03 05:46:51,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75675028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:51,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:51,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:51,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057291954] [2021-11-03 05:46:51,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:51,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:51,409 INFO L87 Difference]: Start difference. First operand 638 states and 823 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:52,813 INFO L93 Difference]: Finished difference Result 1206 states and 1553 transitions. [2021-11-03 05:46:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:52,815 INFO L225 Difference]: With dead ends: 1206 [2021-11-03 05:46:52,815 INFO L226 Difference]: Without dead ends: 1106 [2021-11-03 05:46:52,816 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 05:46:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-03 05:46:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 638. [2021-11-03 05:46:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.319935691318328) internal successors, (821), 637 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 821 transitions. [2021-11-03 05:46:52,983 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 821 transitions. Word has length 95 [2021-11-03 05:46:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:52,983 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 821 transitions. [2021-11-03 05:46:52,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 821 transitions. [2021-11-03 05:46:52,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:52,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:52,985 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] [2021-11-03 05:46:52,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 05:46:52,985 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:52,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:52,986 INFO L85 PathProgramCache]: Analyzing trace with hash -174985950, now seen corresponding path program 1 times [2021-11-03 05:46:52,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:52,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758447347] [2021-11-03 05:46:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:52,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:53,112 INFO 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 05:46:53,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:53,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758447347] [2021-11-03 05:46:53,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758447347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:53,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:53,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:53,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361432346] [2021-11-03 05:46:53,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:53,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:53,115 INFO L87 Difference]: Start difference. First operand 638 states and 821 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:54,548 INFO L93 Difference]: Finished difference Result 1202 states and 1546 transitions. [2021-11-03 05:46:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:46:54,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:54,550 INFO L225 Difference]: With dead ends: 1202 [2021-11-03 05:46:54,550 INFO L226 Difference]: Without dead ends: 1106 [2021-11-03 05:46:54,551 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 05:46:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-03 05:46:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 638. [2021-11-03 05:46:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3167202572347267) internal successors, (819), 637 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 819 transitions. [2021-11-03 05:46:54,725 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 819 transitions. Word has length 95 [2021-11-03 05:46:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:54,726 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 819 transitions. [2021-11-03 05:46:54,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 819 transitions. [2021-11-03 05:46:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:54,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:54,727 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] [2021-11-03 05:46:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 05:46:54,727 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -188296274, now seen corresponding path program 1 times [2021-11-03 05:46:54,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:54,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806343126] [2021-11-03 05:46:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:54,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:54,861 INFO 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 05:46:54,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:54,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806343126] [2021-11-03 05:46:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806343126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:54,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:54,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:54,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683697736] [2021-11-03 05:46:54,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:54,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:54,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:54,864 INFO L87 Difference]: Start difference. First operand 638 states and 819 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:56,523 INFO L93 Difference]: Finished difference Result 1252 states and 1623 transitions. [2021-11-03 05:46:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:56,525 INFO L225 Difference]: With dead ends: 1252 [2021-11-03 05:46:56,525 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:46:56,525 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 05:46:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:46:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:46:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3135048231511255) internal successors, (817), 637 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 817 transitions. [2021-11-03 05:46:56,730 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 817 transitions. Word has length 95 [2021-11-03 05:46:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:56,730 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 817 transitions. [2021-11-03 05:46:56,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 817 transitions. [2021-11-03 05:46:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:56,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:56,733 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] [2021-11-03 05:46:56,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 05:46:56,733 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:56,734 INFO L85 PathProgramCache]: Analyzing trace with hash 751271791, now seen corresponding path program 1 times [2021-11-03 05:46:56,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:56,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979323673] [2021-11-03 05:46:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:56,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:56,870 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 05:46:56,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:56,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979323673] [2021-11-03 05:46:56,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979323673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:56,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:56,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:56,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202724600] [2021-11-03 05:46:56,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:56,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:56,876 INFO L87 Difference]: Start difference. First operand 638 states and 817 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:58,351 INFO L93 Difference]: Finished difference Result 1155 states and 1488 transitions. [2021-11-03 05:46:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:46:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:46:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:58,358 INFO L225 Difference]: With dead ends: 1155 [2021-11-03 05:46:58,358 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:46:58,359 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 05:46:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:46:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:46:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.310289389067524) internal successors, (815), 637 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 815 transitions. [2021-11-03 05:46:58,546 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 815 transitions. Word has length 95 [2021-11-03 05:46:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:58,546 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 815 transitions. [2021-11-03 05:46:58,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 815 transitions. [2021-11-03 05:46:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:46:58,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:58,548 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] [2021-11-03 05:46:58,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 05:46:58,549 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:46:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -880482986, now seen corresponding path program 1 times [2021-11-03 05:46:58,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:46:58,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576640119] [2021-11-03 05:46:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:58,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:46:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:58,685 INFO 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 05:46:58,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:46:58,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576640119] [2021-11-03 05:46:58,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576640119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:58,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:46:58,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:46:58,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983536011] [2021-11-03 05:46:58,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:46:58,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:46:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:46:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:46:58,688 INFO L87 Difference]: Start difference. First operand 638 states and 815 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:00,083 INFO L93 Difference]: Finished difference Result 1111 states and 1416 transitions. [2021-11-03 05:47:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:47:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:47:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:00,084 INFO L225 Difference]: With dead ends: 1111 [2021-11-03 05:47:00,085 INFO L226 Difference]: Without dead ends: 1106 [2021-11-03 05:47:00,085 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 05:47:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-03 05:47:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 638. [2021-11-03 05:47:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3070739549839228) internal successors, (813), 637 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 813 transitions. [2021-11-03 05:47:00,258 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 813 transitions. Word has length 95 [2021-11-03 05:47:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:00,258 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 813 transitions. [2021-11-03 05:47:00,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:00,259 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 813 transitions. [2021-11-03 05:47:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:47:00,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:00,262 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] [2021-11-03 05:47:00,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 05:47:00,262 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1836058637, now seen corresponding path program 1 times [2021-11-03 05:47:00,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:00,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307965091] [2021-11-03 05:47:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:00,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:00,381 INFO 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 05:47:00,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:00,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307965091] [2021-11-03 05:47:00,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307965091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:00,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:00,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962029669] [2021-11-03 05:47:00,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:00,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:00,384 INFO L87 Difference]: Start difference. First operand 638 states and 813 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:01,741 INFO L93 Difference]: Finished difference Result 1202 states and 1538 transitions. [2021-11-03 05:47:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:47:01,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:47:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:01,743 INFO L225 Difference]: With dead ends: 1202 [2021-11-03 05:47:01,743 INFO L226 Difference]: Without dead ends: 1106 [2021-11-03 05:47:01,744 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 05:47:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-03 05:47:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 638. [2021-11-03 05:47:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3038585209003215) internal successors, (811), 637 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 811 transitions. [2021-11-03 05:47:01,920 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 811 transitions. Word has length 95 [2021-11-03 05:47:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:01,921 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 811 transitions. [2021-11-03 05:47:01,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 811 transitions. [2021-11-03 05:47:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:47:01,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:01,923 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] [2021-11-03 05:47:01,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 05:47:01,923 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash -771722089, now seen corresponding path program 1 times [2021-11-03 05:47:01,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:01,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823676639] [2021-11-03 05:47:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:02,049 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 05:47:02,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:02,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823676639] [2021-11-03 05:47:02,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823676639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:02,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:02,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:02,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038084429] [2021-11-03 05:47:02,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:02,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:02,052 INFO L87 Difference]: Start difference. First operand 638 states and 811 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:03,426 INFO L93 Difference]: Finished difference Result 1248 states and 1605 transitions. [2021-11-03 05:47:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:47:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:47:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:03,427 INFO L225 Difference]: With dead ends: 1248 [2021-11-03 05:47:03,427 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:47:03,428 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 05:47:03,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:47:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:47:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3006430868167203) internal successors, (809), 637 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 809 transitions. [2021-11-03 05:47:03,598 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 809 transitions. Word has length 95 [2021-11-03 05:47:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:03,599 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 809 transitions. [2021-11-03 05:47:03,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 809 transitions. [2021-11-03 05:47:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:47:03,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:03,600 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] [2021-11-03 05:47:03,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 05:47:03,600 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1868258754, now seen corresponding path program 1 times [2021-11-03 05:47:03,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:03,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620964236] [2021-11-03 05:47:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:03,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:03,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:03,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620964236] [2021-11-03 05:47:03,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620964236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:03,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:03,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:03,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266278104] [2021-11-03 05:47:03,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:03,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:03,723 INFO L87 Difference]: Start difference. First operand 638 states and 809 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:05,169 INFO L93 Difference]: Finished difference Result 1248 states and 1603 transitions. [2021-11-03 05:47:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:47:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:47:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:05,170 INFO L225 Difference]: With dead ends: 1248 [2021-11-03 05:47:05,170 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:47:05,171 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 05:47:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:47:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:47:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.297427652733119) internal successors, (807), 637 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 807 transitions. [2021-11-03 05:47:05,347 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 807 transitions. Word has length 95 [2021-11-03 05:47:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:05,348 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 807 transitions. [2021-11-03 05:47:05,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 807 transitions. [2021-11-03 05:47:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:47:05,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:05,349 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] [2021-11-03 05:47:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 05:47:05,349 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1342768443, now seen corresponding path program 1 times [2021-11-03 05:47:05,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:05,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065470567] [2021-11-03 05:47:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:05,478 INFO 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 05:47:05,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:05,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065470567] [2021-11-03 05:47:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065470567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:05,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:05,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890123732] [2021-11-03 05:47:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:05,481 INFO L87 Difference]: Start difference. First operand 638 states and 807 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:07,169 INFO L93 Difference]: Finished difference Result 1246 states and 1598 transitions. [2021-11-03 05:47:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:47:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-03 05:47:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:07,171 INFO L225 Difference]: With dead ends: 1246 [2021-11-03 05:47:07,171 INFO L226 Difference]: Without dead ends: 1138 [2021-11-03 05:47:07,171 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 05:47:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-03 05:47:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 638. [2021-11-03 05:47:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.2942122186495177) internal successors, (805), 637 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 805 transitions. [2021-11-03 05:47:07,356 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 805 transitions. Word has length 95 [2021-11-03 05:47:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:07,357 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 805 transitions. [2021-11-03 05:47:07,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 805 transitions. [2021-11-03 05:47:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 05:47:07,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:07,359 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] [2021-11-03 05:47:07,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 05:47:07,360 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1106914618, now seen corresponding path program 1 times [2021-11-03 05:47:07,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:07,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774412027] [2021-11-03 05:47:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:07,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:07,485 INFO 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 05:47:07,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:07,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774412027] [2021-11-03 05:47:07,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774412027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:07,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:07,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:07,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457578654] [2021-11-03 05:47:07,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:07,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:07,488 INFO L87 Difference]: Start difference. First operand 638 states and 805 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:09,090 INFO L93 Difference]: Finished difference Result 1302 states and 1673 transitions. [2021-11-03 05:47:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:47:09,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 05:47:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:09,091 INFO L225 Difference]: With dead ends: 1302 [2021-11-03 05:47:09,092 INFO L226 Difference]: Without dead ends: 1146 [2021-11-03 05:47:09,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:47:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-03 05:47:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 630. [2021-11-03 05:47:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 614 states have (on average 1.294788273615635) internal successors, (795), 629 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 795 transitions. [2021-11-03 05:47:09,283 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 795 transitions. Word has length 96 [2021-11-03 05:47:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:09,283 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 795 transitions. [2021-11-03 05:47:09,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 795 transitions. [2021-11-03 05:47:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 05:47:09,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:09,285 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] [2021-11-03 05:47:09,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 05:47:09,285 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1380049275, now seen corresponding path program 1 times [2021-11-03 05:47:09,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:09,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740114529] [2021-11-03 05:47:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:09,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:09,410 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 05:47:09,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:09,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740114529] [2021-11-03 05:47:09,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740114529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:09,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:09,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:09,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350275165] [2021-11-03 05:47:09,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:09,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:09,413 INFO L87 Difference]: Start difference. First operand 630 states and 795 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:10,875 INFO L93 Difference]: Finished difference Result 1190 states and 1516 transitions. [2021-11-03 05:47:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:47:10,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 05:47:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:10,876 INFO L225 Difference]: With dead ends: 1190 [2021-11-03 05:47:10,877 INFO L226 Difference]: Without dead ends: 1096 [2021-11-03 05:47:10,877 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 05:47:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-03 05:47:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 628. [2021-11-03 05:47:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 612 states have (on average 1.292483660130719) internal successors, (791), 627 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 791 transitions. [2021-11-03 05:47:11,059 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 791 transitions. Word has length 96 [2021-11-03 05:47:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:11,059 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 791 transitions. [2021-11-03 05:47:11,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 791 transitions. [2021-11-03 05:47:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:11,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:11,062 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] [2021-11-03 05:47:11,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 05:47:11,062 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1212843376, now seen corresponding path program 1 times [2021-11-03 05:47:11,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:11,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636470542] [2021-11-03 05:47:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:11,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:11,433 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 05:47:11,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:11,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636470542] [2021-11-03 05:47:11,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636470542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:11,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:11,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:47:11,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093659283] [2021-11-03 05:47:11,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:47:11,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:47:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:47:11,435 INFO L87 Difference]: Start difference. First operand 628 states and 791 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:12,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:12,965 INFO L93 Difference]: Finished difference Result 1004 states and 1263 transitions. [2021-11-03 05:47:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:47:12,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 05:47:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:12,967 INFO L225 Difference]: With dead ends: 1004 [2021-11-03 05:47:12,967 INFO L226 Difference]: Without dead ends: 906 [2021-11-03 05:47:12,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:47:12,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-03 05:47:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 618. [2021-11-03 05:47:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 603 states have (on average 1.286898839137645) internal successors, (776), 617 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 776 transitions. [2021-11-03 05:47:13,185 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 776 transitions. Word has length 97 [2021-11-03 05:47:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:13,186 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 776 transitions. [2021-11-03 05:47:13,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 776 transitions. [2021-11-03 05:47:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:13,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:13,187 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] [2021-11-03 05:47:13,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 05:47:13,188 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash 638588087, now seen corresponding path program 1 times [2021-11-03 05:47:13,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:13,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156557248] [2021-11-03 05:47:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:13,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:13,592 INFO 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 05:47:13,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:13,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156557248] [2021-11-03 05:47:13,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156557248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:13,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:13,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:47:13,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298506741] [2021-11-03 05:47:13,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:47:13,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:47:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:47:13,595 INFO L87 Difference]: Start difference. First operand 618 states and 776 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:15,332 INFO L93 Difference]: Finished difference Result 1450 states and 1863 transitions. [2021-11-03 05:47:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:47:15,333 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 05:47:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:15,334 INFO L225 Difference]: With dead ends: 1450 [2021-11-03 05:47:15,334 INFO L226 Difference]: Without dead ends: 1304 [2021-11-03 05:47:15,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:47:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-03 05:47:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 564. [2021-11-03 05:47:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 552 states have (on average 1.2771739130434783) internal successors, (705), 563 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 705 transitions. [2021-11-03 05:47:15,583 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 705 transitions. Word has length 97 [2021-11-03 05:47:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:15,583 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 705 transitions. [2021-11-03 05:47:15,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 705 transitions. [2021-11-03 05:47:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:15,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:15,585 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] [2021-11-03 05:47:15,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 05:47:15,585 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:15,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1773183359, now seen corresponding path program 1 times [2021-11-03 05:47:15,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:15,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642710860] [2021-11-03 05:47:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:15,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:16,004 INFO 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 05:47:16,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:16,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642710860] [2021-11-03 05:47:16,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642710860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:16,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:16,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:47:16,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91749836] [2021-11-03 05:47:16,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:47:16,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:47:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:47:16,007 INFO L87 Difference]: Start difference. First operand 564 states and 705 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:18,434 INFO L93 Difference]: Finished difference Result 1800 states and 2330 transitions. [2021-11-03 05:47:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 05:47:18,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 05:47:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:18,436 INFO L225 Difference]: With dead ends: 1800 [2021-11-03 05:47:18,436 INFO L226 Difference]: Without dead ends: 1596 [2021-11-03 05:47:18,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-03 05:47:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-11-03 05:47:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 452. [2021-11-03 05:47:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 444 states have (on average 1.259009009009009) internal successors, (559), 451 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 559 transitions. [2021-11-03 05:47:18,640 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 559 transitions. Word has length 97 [2021-11-03 05:47:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:18,640 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 559 transitions. [2021-11-03 05:47:18,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 559 transitions. [2021-11-03 05:47:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:47:18,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:18,641 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] [2021-11-03 05:47:18,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 05:47:18,642 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash -133396310, now seen corresponding path program 1 times [2021-11-03 05:47:18,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:18,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304907835] [2021-11-03 05:47:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:18,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:19,067 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 05:47:19,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:19,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304907835] [2021-11-03 05:47:19,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304907835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:19,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:19,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:47:19,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432105475] [2021-11-03 05:47:19,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:47:19,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:47:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:47:19,069 INFO L87 Difference]: Start difference. First operand 452 states and 559 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:20,318 INFO L93 Difference]: Finished difference Result 808 states and 1027 transitions. [2021-11-03 05:47:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:47:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 05:47:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:20,320 INFO L225 Difference]: With dead ends: 808 [2021-11-03 05:47:20,320 INFO L226 Difference]: Without dead ends: 518 [2021-11-03 05:47:20,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:47:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-03 05:47:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 254. [2021-11-03 05:47:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 251 states have (on average 1.2151394422310757) internal successors, (305), 253 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 305 transitions. [2021-11-03 05:47:20,479 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 305 transitions. Word has length 97 [2021-11-03 05:47:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 305 transitions. [2021-11-03 05:47:20,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 305 transitions. [2021-11-03 05:47:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:47:20,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:20,481 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] [2021-11-03 05:47:20,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 05:47:20,481 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1851448540, now seen corresponding path program 1 times [2021-11-03 05:47:20,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:20,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100436555] [2021-11-03 05:47:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:20,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:20,599 INFO 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 05:47:20,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:20,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100436555] [2021-11-03 05:47:20,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100436555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:20,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:20,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:20,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022172292] [2021-11-03 05:47:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:20,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:20,601 INFO L87 Difference]: Start difference. First operand 254 states and 305 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:21,343 INFO L93 Difference]: Finished difference Result 528 states and 660 transitions. [2021-11-03 05:47:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:47:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 05:47:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:21,345 INFO L225 Difference]: With dead ends: 528 [2021-11-03 05:47:21,345 INFO L226 Difference]: Without dead ends: 406 [2021-11-03 05:47:21,345 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 05:47:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-03 05:47:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 254. [2021-11-03 05:47:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 251 states have (on average 1.207171314741036) internal successors, (303), 253 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 303 transitions. [2021-11-03 05:47:21,503 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 303 transitions. Word has length 98 [2021-11-03 05:47:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:21,503 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 303 transitions. [2021-11-03 05:47:21,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 303 transitions. [2021-11-03 05:47:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:47:21,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:21,504 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] [2021-11-03 05:47:21,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 05:47:21,505 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:21,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1648868085, now seen corresponding path program 1 times [2021-11-03 05:47:21,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:21,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996712084] [2021-11-03 05:47:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:21,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:21,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:21,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996712084] [2021-11-03 05:47:21,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996712084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:21,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:21,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:47:21,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094124869] [2021-11-03 05:47:21,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:21,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:21,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:47:21,636 INFO L87 Difference]: Start difference. First operand 254 states and 303 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:22,338 INFO L93 Difference]: Finished difference Result 389 states and 474 transitions. [2021-11-03 05:47:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:47:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 05:47:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:22,340 INFO L225 Difference]: With dead ends: 389 [2021-11-03 05:47:22,340 INFO L226 Difference]: Without dead ends: 382 [2021-11-03 05:47:22,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:47:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-03 05:47:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 254. [2021-11-03 05:47:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 251 states have (on average 1.203187250996016) internal successors, (302), 253 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 302 transitions. [2021-11-03 05:47:22,500 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 302 transitions. Word has length 98 [2021-11-03 05:47:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:22,500 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 302 transitions. [2021-11-03 05:47:22,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 302 transitions. [2021-11-03 05:47:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:47:22,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:22,501 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 05:47:22,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 05:47:22,502 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1289791201, now seen corresponding path program 1 times [2021-11-03 05:47:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:22,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953498386] [2021-11-03 05:47:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:22,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:24,023 INFO 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 05:47:24,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:24,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953498386] [2021-11-03 05:47:24,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953498386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:24,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:24,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-03 05:47:24,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710715072] [2021-11-03 05:47:24,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 05:47:24,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 05:47:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:47:24,025 INFO L87 Difference]: Start difference. First operand 254 states and 302 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:27,687 INFO L93 Difference]: Finished difference Result 492 states and 610 transitions. [2021-11-03 05:47:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 05:47:27,688 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:27,689 INFO L225 Difference]: With dead ends: 492 [2021-11-03 05:47:27,689 INFO L226 Difference]: Without dead ends: 387 [2021-11-03 05:47:27,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=435, Invalid=2871, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 05:47:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-03 05:47:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 275. [2021-11-03 05:47:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 272 states have (on average 1.2022058823529411) internal successors, (327), 274 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 327 transitions. [2021-11-03 05:47:27,864 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 327 transitions. Word has length 100 [2021-11-03 05:47:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:27,864 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 327 transitions. [2021-11-03 05:47:27,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 327 transitions. [2021-11-03 05:47:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:47:27,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:27,865 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 05:47:27,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 05:47:27,865 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash -665675578, now seen corresponding path program 1 times [2021-11-03 05:47:27,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:27,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774658605] [2021-11-03 05:47:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:27,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:29,354 INFO 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 05:47:29,354 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:29,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774658605] [2021-11-03 05:47:29,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774658605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:29,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:29,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-03 05:47:29,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918415608] [2021-11-03 05:47:29,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 05:47:29,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 05:47:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:47:29,356 INFO L87 Difference]: Start difference. First operand 275 states and 327 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:32,892 INFO L93 Difference]: Finished difference Result 307 states and 359 transitions. [2021-11-03 05:47:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 05:47:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:32,893 INFO L225 Difference]: With dead ends: 307 [2021-11-03 05:47:32,893 INFO L226 Difference]: Without dead ends: 299 [2021-11-03 05:47:32,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=435, Invalid=2871, Unknown=0, NotChecked=0, Total=3306 [2021-11-03 05:47:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-03 05:47:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 279. [2021-11-03 05:47:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 278 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 332 transitions. [2021-11-03 05:47:33,053 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 332 transitions. Word has length 100 [2021-11-03 05:47:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:33,054 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 332 transitions. [2021-11-03 05:47:33,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 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 05:47:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 332 transitions. [2021-11-03 05:47:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:47:33,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:33,055 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 05:47:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 05:47:33,055 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:33,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2052645067, now seen corresponding path program 1 times [2021-11-03 05:47:33,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:33,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44620511] [2021-11-03 05:47:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:33,399 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 05:47:33,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:33,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44620511] [2021-11-03 05:47:33,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44620511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:33,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:33,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:47:33,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129057288] [2021-11-03 05:47:33,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:47:33,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:47:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:47:33,401 INFO L87 Difference]: Start difference. First operand 279 states and 332 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 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 05:47:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:34,694 INFO L93 Difference]: Finished difference Result 663 states and 831 transitions. [2021-11-03 05:47:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:47:34,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 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 05:47:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:34,695 INFO L225 Difference]: With dead ends: 663 [2021-11-03 05:47:34,695 INFO L226 Difference]: Without dead ends: 648 [2021-11-03 05:47:34,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:47:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-03 05:47:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 263. [2021-11-03 05:47:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 1.1992337164750957) internal successors, (313), 262 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 313 transitions. [2021-11-03 05:47:34,865 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 313 transitions. Word has length 101 [2021-11-03 05:47:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:34,865 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 313 transitions. [2021-11-03 05:47:34,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 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 05:47:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 313 transitions. [2021-11-03 05:47:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:47:34,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:34,866 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 05:47:34,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 05:47:34,866 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1441605077, now seen corresponding path program 1 times [2021-11-03 05:47:34,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:34,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85239434] [2021-11-03 05:47:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:34,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:35,156 INFO 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 05:47:35,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:35,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85239434] [2021-11-03 05:47:35,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85239434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:35,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:35,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 05:47:35,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558980762] [2021-11-03 05:47:35,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:47:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:47:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:47:35,159 INFO L87 Difference]: Start difference. First operand 263 states and 313 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 10 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 05:47:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:36,526 INFO L93 Difference]: Finished difference Result 593 states and 745 transitions. [2021-11-03 05:47:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:47:36,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 10 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 05:47:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:36,528 INFO L225 Difference]: With dead ends: 593 [2021-11-03 05:47:36,528 INFO L226 Difference]: Without dead ends: 587 [2021-11-03 05:47:36,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:47:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-03 05:47:36,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 256. [2021-11-03 05:47:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.196078431372549) internal successors, (305), 255 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2021-11-03 05:47:36,686 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 101 [2021-11-03 05:47:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:36,686 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2021-11-03 05:47:36,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 10 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 05:47:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2021-11-03 05:47:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 05:47:36,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:36,687 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, 1, 1, 1, 1] [2021-11-03 05:47:36,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 05:47:36,688 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:36,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1975645771, now seen corresponding path program 1 times [2021-11-03 05:47:36,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:36,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717005335] [2021-11-03 05:47:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:36,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:47:36,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717005335] [2021-11-03 05:47:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717005335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:36,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:36,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:36,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197379402] [2021-11-03 05:47:36,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:36,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:36,755 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 05:47:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:37,052 INFO L93 Difference]: Finished difference Result 356 states and 439 transitions. [2021-11-03 05:47:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 05:47:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:37,054 INFO L225 Difference]: With dead ends: 356 [2021-11-03 05:47:37,054 INFO L226 Difference]: Without dead ends: 309 [2021-11-03 05:47:37,054 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 05:47:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-03 05:47:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2021-11-03 05:47:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.2147651006711409) internal successors, (362), 298 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 362 transitions. [2021-11-03 05:47:37,282 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 362 transitions. Word has length 118 [2021-11-03 05:47:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:37,282 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 362 transitions. [2021-11-03 05:47:37,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 05:47:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 362 transitions. [2021-11-03 05:47:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 05:47:37,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:37,283 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] [2021-11-03 05:47:37,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 05:47:37,284 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1353285522, now seen corresponding path program 1 times [2021-11-03 05:47:37,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:37,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69394852] [2021-11-03 05:47:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:37,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:37,365 INFO 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 05:47:37,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:37,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69394852] [2021-11-03 05:47:37,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69394852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:37,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:37,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:37,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772921898] [2021-11-03 05:47:37,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:37,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:37,367 INFO L87 Difference]: Start difference. First operand 299 states and 362 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:37,784 INFO L93 Difference]: Finished difference Result 565 states and 720 transitions. [2021-11-03 05:47:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-03 05:47:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:37,785 INFO L225 Difference]: With dead ends: 565 [2021-11-03 05:47:37,785 INFO L226 Difference]: Without dead ends: 432 [2021-11-03 05:47:37,786 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 05:47:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-03 05:47:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 418. [2021-11-03 05:47:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.2517985611510791) internal successors, (522), 417 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 522 transitions. [2021-11-03 05:47:38,188 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 522 transitions. Word has length 121 [2021-11-03 05:47:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:38,188 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 522 transitions. [2021-11-03 05:47:38,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:38,189 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 522 transitions. [2021-11-03 05:47:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 05:47:38,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:38,190 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] [2021-11-03 05:47:38,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 05:47:38,191 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:38,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1408361133, now seen corresponding path program 1 times [2021-11-03 05:47:38,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:38,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783806301] [2021-11-03 05:47:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:38,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:38,253 INFO 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 05:47:38,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:38,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783806301] [2021-11-03 05:47:38,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783806301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:38,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:38,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:38,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992454887] [2021-11-03 05:47:38,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:38,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:38,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:38,256 INFO L87 Difference]: Start difference. First operand 418 states and 522 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:39,131 INFO L93 Difference]: Finished difference Result 922 states and 1200 transitions. [2021-11-03 05:47:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:39,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 05:47:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:39,132 INFO L225 Difference]: With dead ends: 922 [2021-11-03 05:47:39,132 INFO L226 Difference]: Without dead ends: 670 [2021-11-03 05:47:39,133 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 05:47:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-03 05:47:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 644. [2021-11-03 05:47:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.28149300155521) internal successors, (824), 643 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 824 transitions. [2021-11-03 05:47:39,934 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 824 transitions. Word has length 124 [2021-11-03 05:47:39,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:39,935 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 824 transitions. [2021-11-03 05:47:39,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 824 transitions. [2021-11-03 05:47:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-03 05:47:39,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:39,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:39,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 05:47:39,936 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash 432519453, now seen corresponding path program 1 times [2021-11-03 05:47:39,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:39,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187814379] [2021-11-03 05:47:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:39,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:40,007 INFO 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 05:47:40,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:40,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187814379] [2021-11-03 05:47:40,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187814379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:40,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:40,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:40,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415473028] [2021-11-03 05:47:40,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:40,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:40,010 INFO L87 Difference]: Start difference. First operand 644 states and 824 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:41,511 INFO L93 Difference]: Finished difference Result 1600 states and 2106 transitions. [2021-11-03 05:47:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:41,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-03 05:47:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:41,513 INFO L225 Difference]: With dead ends: 1600 [2021-11-03 05:47:41,514 INFO L226 Difference]: Without dead ends: 1122 [2021-11-03 05:47:41,514 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 05:47:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-11-03 05:47:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1072. [2021-11-03 05:47:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.2997198879551821) internal successors, (1392), 1071 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1392 transitions. [2021-11-03 05:47:42,946 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1392 transitions. Word has length 127 [2021-11-03 05:47:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:42,946 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1392 transitions. [2021-11-03 05:47:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1392 transitions. [2021-11-03 05:47:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-03 05:47:42,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:42,948 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] [2021-11-03 05:47:42,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 05:47:42,948 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash 944901405, now seen corresponding path program 1 times [2021-11-03 05:47:42,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:42,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263421496] [2021-11-03 05:47:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:42,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:43,026 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 05:47:43,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:43,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263421496] [2021-11-03 05:47:43,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263421496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:43,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:43,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:43,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531874910] [2021-11-03 05:47:43,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:43,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:43,029 INFO L87 Difference]: Start difference. First operand 1072 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:45,859 INFO L93 Difference]: Finished difference Result 2884 states and 3810 transitions. [2021-11-03 05:47:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-03 05:47:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:45,862 INFO L225 Difference]: With dead ends: 2884 [2021-11-03 05:47:45,862 INFO L226 Difference]: Without dead ends: 1978 [2021-11-03 05:47:45,863 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 05:47:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-11-03 05:47:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1880. [2021-11-03 05:47:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 1.3070782331027142) internal successors, (2456), 1879 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2456 transitions. [2021-11-03 05:47:48,687 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2456 transitions. Word has length 130 [2021-11-03 05:47:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:48,688 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 2456 transitions. [2021-11-03 05:47:48,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2456 transitions. [2021-11-03 05:47:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 05:47:48,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:48,690 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] [2021-11-03 05:47:48,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 05:47:48,690 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:47:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1183996359, now seen corresponding path program 1 times [2021-11-03 05:47:48,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:47:48,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51327425] [2021-11-03 05:47:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:48,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:47:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:48,763 INFO 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 05:47:48,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:47:48,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51327425] [2021-11-03 05:47:48,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51327425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:48,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:47:48,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:47:48,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795849311] [2021-11-03 05:47:48,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:48,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:47:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:47:48,766 INFO L87 Difference]: Start difference. First operand 1880 states and 2456 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:54,436 INFO L93 Difference]: Finished difference Result 5308 states and 7002 transitions. [2021-11-03 05:47:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-03 05:47:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:54,440 INFO L225 Difference]: With dead ends: 5308 [2021-11-03 05:47:54,440 INFO L226 Difference]: Without dead ends: 3594 [2021-11-03 05:47:54,442 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 05:47:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-11-03 05:47:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3400. [2021-11-03 05:48:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 1.3062665489849956) internal successors, (4440), 3399 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 4440 transitions. [2021-11-03 05:48:00,006 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 4440 transitions. Word has length 133 [2021-11-03 05:48:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:00,006 INFO L470 AbstractCegarLoop]: Abstraction has 3400 states and 4440 transitions. [2021-11-03 05:48:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 4440 transitions. [2021-11-03 05:48:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-03 05:48:00,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:00,008 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] [2021-11-03 05:48:00,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 05:48:00,008 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:48:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1161915133, now seen corresponding path program 1 times [2021-11-03 05:48:00,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:48:00,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207700640] [2021-11-03 05:48:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:00,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:48:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:48:00,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:48:00,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207700640] [2021-11-03 05:48:00,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207700640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:00,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:00,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:48:00,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33683532] [2021-11-03 05:48:00,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:48:00,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:48:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:48:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:48:00,119 INFO L87 Difference]: Start difference. First operand 3400 states and 4440 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:17,960 INFO L93 Difference]: Finished difference Result 13725 states and 18089 transitions. [2021-11-03 05:48:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:48:17,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-03 05:48:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:17,973 INFO L225 Difference]: With dead ends: 13725 [2021-11-03 05:48:17,973 INFO L226 Difference]: Without dead ends: 10491 [2021-11-03 05:48:17,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:48:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2021-11-03 05:48:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 4738. [2021-11-03 05:48:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 4737 states have (on average 1.3008233058898038) internal successors, (6162), 4737 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6162 transitions. [2021-11-03 05:48:25,640 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6162 transitions. Word has length 136 [2021-11-03 05:48:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:25,640 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 6162 transitions. [2021-11-03 05:48:25,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6162 transitions. [2021-11-03 05:48:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:48:25,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:25,643 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] [2021-11-03 05:48:25,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 05:48:25,643 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:48:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -49276926, now seen corresponding path program 1 times [2021-11-03 05:48:25,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:48:25,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793286774] [2021-11-03 05:48:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:25,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:48:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:25,708 INFO 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 05:48:25,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:48:25,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793286774] [2021-11-03 05:48:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793286774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:25,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:48:25,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199750860] [2021-11-03 05:48:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:48:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:48:25,711 INFO L87 Difference]: Start difference. First operand 4738 states and 6162 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:35,404 INFO L93 Difference]: Finished difference Result 10496 states and 13710 transitions. [2021-11-03 05:48:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:35,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:48:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:35,412 INFO L225 Difference]: With dead ends: 10496 [2021-11-03 05:48:35,412 INFO L226 Difference]: Without dead ends: 5924 [2021-11-03 05:48:35,417 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 05:48:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5924 states. [2021-11-03 05:48:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5924 to 5922. [2021-11-03 05:48:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 5921 states have (on average 1.2943759500084444) internal successors, (7664), 5921 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7664 transitions. [2021-11-03 05:48:45,655 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7664 transitions. Word has length 138 [2021-11-03 05:48:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:45,656 INFO L470 AbstractCegarLoop]: Abstraction has 5922 states and 7664 transitions. [2021-11-03 05:48:45,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7664 transitions. [2021-11-03 05:48:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 05:48:45,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:45,658 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] [2021-11-03 05:48:45,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 05:48:45,658 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:48:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1875011963, now seen corresponding path program 1 times [2021-11-03 05:48:45,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:48:45,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979588938] [2021-11-03 05:48:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:45,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:48:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:45,731 INFO 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 05:48:45,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:48:45,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979588938] [2021-11-03 05:48:45,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979588938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:45,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:45,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:48:45,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753298306] [2021-11-03 05:48:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:45,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:48:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:48:45,734 INFO L87 Difference]: Start difference. First operand 5922 states and 7664 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:55,040 INFO L93 Difference]: Finished difference Result 11680 states and 15146 transitions. [2021-11-03 05:48:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-03 05:48:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:55,046 INFO L225 Difference]: With dead ends: 11680 [2021-11-03 05:48:55,046 INFO L226 Difference]: Without dead ends: 5924 [2021-11-03 05:48:55,050 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 05:48:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5924 states. [2021-11-03 05:49:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5924 to 5922. [2021-11-03 05:49:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 5921 states have (on average 1.2940381692281708) internal successors, (7662), 5921 states have internal predecessors, (7662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7662 transitions. [2021-11-03 05:49:03,817 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7662 transitions. Word has length 138 [2021-11-03 05:49:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:03,818 INFO L470 AbstractCegarLoop]: Abstraction has 5922 states and 7662 transitions. [2021-11-03 05:49:03,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7662 transitions. [2021-11-03 05:49:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 05:49:03,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:03,819 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 05:49:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 05:49:03,819 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:49:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -18028895, now seen corresponding path program 1 times [2021-11-03 05:49:03,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:49:03,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055547466] [2021-11-03 05:49:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:03,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:49:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:03,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:49:03,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055547466] [2021-11-03 05:49:03,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055547466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:03,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:03,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:49:03,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025898110] [2021-11-03 05:49:03,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:49:03,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:49:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:49:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:49:03,940 INFO L87 Difference]: Start difference. First operand 5922 states and 7662 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 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 05:49:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:18,231 INFO L93 Difference]: Finished difference Result 8476 states and 10803 transitions. [2021-11-03 05:49:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:49:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 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 05:49:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:18,242 INFO L225 Difference]: With dead ends: 8476 [2021-11-03 05:49:18,242 INFO L226 Difference]: Without dead ends: 8474 [2021-11-03 05:49:18,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:49:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2021-11-03 05:49:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 5922. [2021-11-03 05:49:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 5921 states have (on average 1.277824691775038) internal successors, (7566), 5921 states have internal predecessors, (7566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7566 transitions. [2021-11-03 05:49:27,545 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7566 transitions. Word has length 139 [2021-11-03 05:49:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:27,546 INFO L470 AbstractCegarLoop]: Abstraction has 5922 states and 7566 transitions. [2021-11-03 05:49:27,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 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 05:49:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7566 transitions. [2021-11-03 05:49:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-03 05:49:27,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:27,548 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:49:27,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 05:49:27,548 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:49:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1612926421, now seen corresponding path program 1 times [2021-11-03 05:49:27,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:49:27,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171491184] [2021-11-03 05:49:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:27,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:49:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-03 05:49:27,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:49:27,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171491184] [2021-11-03 05:49:27,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171491184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:27,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:27,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:49:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626063111] [2021-11-03 05:49:27,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:49:27,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:49:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:49:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:49:27,700 INFO L87 Difference]: Start difference. First operand 5922 states and 7566 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:42,221 INFO L93 Difference]: Finished difference Result 14934 states and 19101 transitions. [2021-11-03 05:49:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:49:42,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have 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 05:49:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:42,232 INFO L225 Difference]: With dead ends: 14934 [2021-11-03 05:49:42,232 INFO L226 Difference]: Without dead ends: 9164 [2021-11-03 05:49:42,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 05:49:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2021-11-03 05:49:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 5922. [2021-11-03 05:49:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5922 states, 5921 states have (on average 1.2773180206046275) internal successors, (7563), 5921 states have internal predecessors, (7563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5922 states to 5922 states and 7563 transitions. [2021-11-03 05:49:52,074 INFO L78 Accepts]: Start accepts. Automaton has 5922 states and 7563 transitions. Word has length 157 [2021-11-03 05:49:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:52,074 INFO L470 AbstractCegarLoop]: Abstraction has 5922 states and 7563 transitions. [2021-11-03 05:49:52,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5922 states and 7563 transitions. [2021-11-03 05:49:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-03 05:49:52,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:52,076 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:49:52,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 05:49:52,076 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-11-03 05:49:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash 842693888, now seen corresponding path program 1 times [2021-11-03 05:49:52,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:49:52,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199227707] [2021-11-03 05:49:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:52,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:49:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:50:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:50:00,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:50:00,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199227707] [2021-11-03 05:50:00,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199227707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:50:00,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987995049] [2021-11-03 05:50:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:50:00,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:50:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:50:00,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:50:00,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a251aeb-a985-44fa-8d58-af6850f11975/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:50:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:50:01,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-03 05:50:01,138 INFO L286 TraceCheckSpWp]: Computing forward predicates...