./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef1b718ec14fcc68d212ba49eb2094855200a064b5887a7f2eecdbae8074f363 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:57:43,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:57:43,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:57:43,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:57:43,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:57:43,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:57:43,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:57:43,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:57:43,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:57:43,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:57:43,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:57:43,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:57:43,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:57:43,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:57:43,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:57:43,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:57:43,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:57:43,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:57:43,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:57:43,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:57:43,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:57:43,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:57:43,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:57:43,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:57:43,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:57:43,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:57:43,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:57:43,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:57:43,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:57:43,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:57:43,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:57:43,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:57:43,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:57:43,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:57:43,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:57:43,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:57:43,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:57:43,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:57:43,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:57:43,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:57:43,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:57:43,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:57:43,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:57:43,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:57:43,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:57:43,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:57:43,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:57:43,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:57:43,619 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:57:43,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:57:43,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:57:43,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:57:43,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:57:43,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:57:43,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:57:43,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:57:43,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:57:43,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:57:43,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:57:43,622 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:57:43,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:57:43,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:57:43,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:57:43,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:57:43,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:57:43,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:57:43,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:57:43,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:57:43,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:57:43,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:57:43,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:57:43,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:57:43,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:57:43,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:57:43,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:57:43,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:57:43,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:57:43,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:57:43,626 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:57:43,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:57:43,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:57:43,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:57:43,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:57:43,627 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_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef1b718ec14fcc68d212ba49eb2094855200a064b5887a7f2eecdbae8074f363 [2021-11-25 17:57:43,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:57:43,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:57:43,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:57:43,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:57:43,968 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:57:43,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 17:57:44,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/data/e2110212d/5b9fb226101a44a896d421f5a8cb1f9d/FLAGf56a3b1e5 [2021-11-25 17:57:44,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:57:44,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 17:57:44,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/data/e2110212d/5b9fb226101a44a896d421f5a8cb1f9d/FLAGf56a3b1e5 [2021-11-25 17:57:44,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/data/e2110212d/5b9fb226101a44a896d421f5a8cb1f9d [2021-11-25 17:57:44,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:57:44,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:57:44,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:57:44,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:57:44,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:57:44,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:57:44" (1/1) ... [2021-11-25 17:57:44,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61368291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:44, skipping insertion in model container [2021-11-25 17:57:44,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:57:44" (1/1) ... [2021-11-25 17:57:44,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:57:45,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:57:45,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2021-11-25 17:57:45,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2021-11-25 17:57:45,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2021-11-25 17:57:45,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2021-11-25 17:57:45,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2021-11-25 17:57:45,526 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2021-11-25 17:57:45,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2021-11-25 17:57:45,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2021-11-25 17:57:45,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2021-11-25 17:57:45,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2021-11-25 17:57:45,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2021-11-25 17:57:45,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2021-11-25 17:57:45,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2021-11-25 17:57:45,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2021-11-25 17:57:45,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2021-11-25 17:57:45,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2021-11-25 17:57:45,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:57:45,959 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:57:46,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2021-11-25 17:57:46,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2021-11-25 17:57:46,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2021-11-25 17:57:46,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2021-11-25 17:57:46,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2021-11-25 17:57:46,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2021-11-25 17:57:46,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2021-11-25 17:57:46,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2021-11-25 17:57:46,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2021-11-25 17:57:46,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2021-11-25 17:57:46,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2021-11-25 17:57:46,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2021-11-25 17:57:46,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2021-11-25 17:57:46,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2021-11-25 17:57:46,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2021-11-25 17:57:46,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2021-11-25 17:57:46,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:57:46,354 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:57:46,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46 WrapperNode [2021-11-25 17:57:46,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:57:46,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:57:46,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:57:46,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:57:46,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,508 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3487 [2021-11-25 17:57:46,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:57:46,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:57:46,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:57:46,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:57:46,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:57:46,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:57:46,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:57:46,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:57:46,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (1/1) ... [2021-11-25 17:57:46,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:57:46,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:57:46,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:57:46,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:57:46,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:57:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:57:46,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:57:46,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:57:46,941 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:57:46,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:57:48,718 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:57:48,839 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:57:48,839 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:57:48,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:57:48 BoogieIcfgContainer [2021-11-25 17:57:48,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:57:48,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:57:48,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:57:48,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:57:48,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:57:44" (1/3) ... [2021-11-25 17:57:48,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41eb7e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:57:48, skipping insertion in model container [2021-11-25 17:57:48,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:46" (2/3) ... [2021-11-25 17:57:48,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41eb7e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:57:48, skipping insertion in model container [2021-11-25 17:57:48,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:57:48" (3/3) ... [2021-11-25 17:57:48,852 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 17:57:48,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:57:48,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-25 17:57:48,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:57:48,918 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:57:48,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-25 17:57:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 17:57:48,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:48,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:48,971 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 533676138, now seen corresponding path program 1 times [2021-11-25 17:57:48,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:48,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647218251] [2021-11-25 17:57:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:48,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:49,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:49,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647218251] [2021-11-25 17:57:49,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647218251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:49,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:49,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:57:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192116707] [2021-11-25 17:57:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:49,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:57:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:57:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:57:49,414 INFO L87 Difference]: Start difference. First operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:50,082 INFO L93 Difference]: Finished difference Result 929 states and 1611 transitions. [2021-11-25 17:57:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:57:50,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-25 17:57:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:50,149 INFO L225 Difference]: With dead ends: 929 [2021-11-25 17:57:50,149 INFO L226 Difference]: Without dead ends: 488 [2021-11-25 17:57:50,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:50,157 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2416 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:50,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 596 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-25 17:57:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2021-11-25 17:57:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 1.2796610169491525) internal successors, (604), 487 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 604 transitions. [2021-11-25 17:57:50,233 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 604 transitions. Word has length 71 [2021-11-25 17:57:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:50,234 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 604 transitions. [2021-11-25 17:57:50,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 604 transitions. [2021-11-25 17:57:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 17:57:50,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:50,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:50,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:57:50,241 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1104820237, now seen corresponding path program 1 times [2021-11-25 17:57:50,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402675167] [2021-11-25 17:57:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:50,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:50,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402675167] [2021-11-25 17:57:50,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402675167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:50,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:50,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:57:50,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605033360] [2021-11-25 17:57:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:50,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:57:50,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:57:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:57:50,449 INFO L87 Difference]: Start difference. First operand 488 states and 604 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:50,801 INFO L93 Difference]: Finished difference Result 805 states and 1022 transitions. [2021-11-25 17:57:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:57:50,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-25 17:57:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:50,808 INFO L225 Difference]: With dead ends: 805 [2021-11-25 17:57:50,808 INFO L226 Difference]: Without dead ends: 436 [2021-11-25 17:57:50,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:50,820 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1530 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:50,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 319 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:57:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-25 17:57:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2021-11-25 17:57:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 420 states have (on average 1.292857142857143) internal successors, (543), 435 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 543 transitions. [2021-11-25 17:57:50,880 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 543 transitions. Word has length 72 [2021-11-25 17:57:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:50,881 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 543 transitions. [2021-11-25 17:57:50,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 543 transitions. [2021-11-25 17:57:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 17:57:50,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:50,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:50,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:57:50,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -408282613, now seen corresponding path program 1 times [2021-11-25 17:57:50,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:50,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752092098] [2021-11-25 17:57:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:50,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:51,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:51,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752092098] [2021-11-25 17:57:51,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752092098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:51,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:51,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:57:51,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599240919] [2021-11-25 17:57:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:51,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:57:51,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:57:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:57:51,056 INFO L87 Difference]: Start difference. First operand 436 states and 543 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:51,349 INFO L93 Difference]: Finished difference Result 753 states and 960 transitions. [2021-11-25 17:57:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:57:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-25 17:57:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:51,353 INFO L225 Difference]: With dead ends: 753 [2021-11-25 17:57:51,354 INFO L226 Difference]: Without dead ends: 398 [2021-11-25 17:57:51,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:51,360 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1440 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:51,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 295 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:57:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-25 17:57:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-11-25 17:57:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 382 states have (on average 1.3089005235602094) internal successors, (500), 397 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 500 transitions. [2021-11-25 17:57:51,382 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 500 transitions. Word has length 73 [2021-11-25 17:57:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:51,382 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 500 transitions. [2021-11-25 17:57:51,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 500 transitions. [2021-11-25 17:57:51,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 17:57:51,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:51,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:51,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:57:51,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:51,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1224504254, now seen corresponding path program 1 times [2021-11-25 17:57:51,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:51,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79538567] [2021-11-25 17:57:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:51,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:51,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:51,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79538567] [2021-11-25 17:57:51,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79538567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:51,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:51,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:57:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000805580] [2021-11-25 17:57:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:51,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:57:51,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:57:51,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:57:51,531 INFO L87 Difference]: Start difference. First operand 398 states and 500 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:51,952 INFO L93 Difference]: Finished difference Result 908 states and 1162 transitions. [2021-11-25 17:57:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:57:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-25 17:57:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:51,957 INFO L225 Difference]: With dead ends: 908 [2021-11-25 17:57:51,957 INFO L226 Difference]: Without dead ends: 569 [2021-11-25 17:57:51,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:51,959 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1799 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:51,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 430 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:57:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-25 17:57:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 509. [2021-11-25 17:57:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 493 states have (on average 1.356997971602434) internal successors, (669), 508 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 669 transitions. [2021-11-25 17:57:52,000 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 669 transitions. Word has length 74 [2021-11-25 17:57:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:52,001 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 669 transitions. [2021-11-25 17:57:52,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 669 transitions. [2021-11-25 17:57:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 17:57:52,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:52,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:52,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:57:52,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 254667180, now seen corresponding path program 1 times [2021-11-25 17:57:52,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448302310] [2021-11-25 17:57:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:52,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:52,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:52,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448302310] [2021-11-25 17:57:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448302310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:52,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:52,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:57:52,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856197716] [2021-11-25 17:57:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:52,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:57:52,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:57:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:57:52,145 INFO L87 Difference]: Start difference. First operand 509 states and 669 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:52,485 INFO L93 Difference]: Finished difference Result 959 states and 1278 transitions. [2021-11-25 17:57:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:57:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-25 17:57:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:52,491 INFO L225 Difference]: With dead ends: 959 [2021-11-25 17:57:52,491 INFO L226 Difference]: Without dead ends: 504 [2021-11-25 17:57:52,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:52,493 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1271 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:52,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 256 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:57:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-25 17:57:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2021-11-25 17:57:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3545081967213115) internal successors, (661), 503 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 661 transitions. [2021-11-25 17:57:52,536 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 661 transitions. Word has length 75 [2021-11-25 17:57:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:52,536 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 661 transitions. [2021-11-25 17:57:52,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 661 transitions. [2021-11-25 17:57:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 17:57:52,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:52,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:52,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:57:52,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:52,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:52,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1435179207, now seen corresponding path program 1 times [2021-11-25 17:57:52,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:52,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494161177] [2021-11-25 17:57:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:52,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:52,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:52,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494161177] [2021-11-25 17:57:52,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494161177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:52,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:52,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:57:52,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669989031] [2021-11-25 17:57:52,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:52,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:57:52,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:57:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:57:52,738 INFO L87 Difference]: Start difference. First operand 504 states and 661 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:53,747 INFO L93 Difference]: Finished difference Result 1078 states and 1417 transitions. [2021-11-25 17:57:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 17:57:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:53,755 INFO L225 Difference]: With dead ends: 1078 [2021-11-25 17:57:53,755 INFO L226 Difference]: Without dead ends: 967 [2021-11-25 17:57:53,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:57:53,757 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1351 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:53,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1251 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:57:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-25 17:57:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 504. [2021-11-25 17:57:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3524590163934427) internal successors, (660), 503 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 660 transitions. [2021-11-25 17:57:53,819 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 660 transitions. Word has length 76 [2021-11-25 17:57:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:53,820 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 660 transitions. [2021-11-25 17:57:53,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 660 transitions. [2021-11-25 17:57:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 17:57:53,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:53,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:53,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:57:53,824 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash 980279151, now seen corresponding path program 1 times [2021-11-25 17:57:53,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:53,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134270822] [2021-11-25 17:57:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:53,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:53,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:53,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134270822] [2021-11-25 17:57:53,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134270822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:53,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:53,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:57:53,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262383180] [2021-11-25 17:57:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:53,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:57:53,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:57:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:57:53,955 INFO L87 Difference]: Start difference. First operand 504 states and 660 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:54,914 INFO L93 Difference]: Finished difference Result 941 states and 1223 transitions. [2021-11-25 17:57:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 17:57:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:54,919 INFO L225 Difference]: With dead ends: 941 [2021-11-25 17:57:54,919 INFO L226 Difference]: Without dead ends: 791 [2021-11-25 17:57:54,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:57:54,921 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 2102 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:54,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 1222 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:57:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-25 17:57:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 504. [2021-11-25 17:57:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 503 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 659 transitions. [2021-11-25 17:57:54,976 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 659 transitions. Word has length 76 [2021-11-25 17:57:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:54,976 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 659 transitions. [2021-11-25 17:57:54,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 659 transitions. [2021-11-25 17:57:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 17:57:54,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:54,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:54,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:57:54,982 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:54,983 INFO L85 PathProgramCache]: Analyzing trace with hash -612595194, now seen corresponding path program 1 times [2021-11-25 17:57:54,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:54,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651986562] [2021-11-25 17:57:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:54,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:55,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:55,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651986562] [2021-11-25 17:57:55,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651986562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:55,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:55,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:57:55,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942992384] [2021-11-25 17:57:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:55,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:57:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:57:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:57:55,144 INFO L87 Difference]: Start difference. First operand 504 states and 659 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:55,789 INFO L93 Difference]: Finished difference Result 927 states and 1170 transitions. [2021-11-25 17:57:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:57:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 17:57:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:55,794 INFO L225 Difference]: With dead ends: 927 [2021-11-25 17:57:55,794 INFO L226 Difference]: Without dead ends: 693 [2021-11-25 17:57:55,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:57:55,796 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2045 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:55,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 605 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:57:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-11-25 17:57:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 504. [2021-11-25 17:57:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.348360655737705) internal successors, (658), 503 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 658 transitions. [2021-11-25 17:57:55,850 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 658 transitions. Word has length 76 [2021-11-25 17:57:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:55,850 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 658 transitions. [2021-11-25 17:57:55,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 658 transitions. [2021-11-25 17:57:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:57:55,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:55,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:55,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:57:55,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:55,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:55,854 INFO L85 PathProgramCache]: Analyzing trace with hash -988049107, now seen corresponding path program 1 times [2021-11-25 17:57:55,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:55,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381104424] [2021-11-25 17:57:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:55,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:56,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:56,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381104424] [2021-11-25 17:57:56,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381104424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:56,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:56,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:57:56,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612513727] [2021-11-25 17:57:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:56,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:57:56,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:57:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:57:56,137 INFO L87 Difference]: Start difference. First operand 504 states and 658 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:58,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:58,345 INFO L93 Difference]: Finished difference Result 1549 states and 2029 transitions. [2021-11-25 17:57:58,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:57:58,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:57:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:58,354 INFO L225 Difference]: With dead ends: 1549 [2021-11-25 17:57:58,354 INFO L226 Difference]: Without dead ends: 1429 [2021-11-25 17:57:58,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:57:58,358 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 3996 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:58,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3996 Valid, 1668 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:57:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2021-11-25 17:57:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 508. [2021-11-25 17:57:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3455284552845528) internal successors, (662), 507 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 662 transitions. [2021-11-25 17:57:58,449 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 662 transitions. Word has length 78 [2021-11-25 17:57:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:58,449 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 662 transitions. [2021-11-25 17:57:58,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 662 transitions. [2021-11-25 17:57:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:57:58,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:58,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:58,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:57:58,452 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1396894335, now seen corresponding path program 1 times [2021-11-25 17:57:58,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142309315] [2021-11-25 17:57:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:58,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:58,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:58,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142309315] [2021-11-25 17:57:58,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142309315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:58,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:58,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:57:58,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746494819] [2021-11-25 17:57:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:58,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:57:58,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:57:58,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:57:58,599 INFO L87 Difference]: Start difference. First operand 508 states and 662 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:59,599 INFO L93 Difference]: Finished difference Result 1045 states and 1359 transitions. [2021-11-25 17:57:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:57:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:57:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:59,606 INFO L225 Difference]: With dead ends: 1045 [2021-11-25 17:57:59,606 INFO L226 Difference]: Without dead ends: 947 [2021-11-25 17:57:59,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:57:59,607 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1862 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:59,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1862 Valid, 1322 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:57:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-25 17:57:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2021-11-25 17:57:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3434959349593496) internal successors, (661), 507 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 661 transitions. [2021-11-25 17:57:59,703 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 661 transitions. Word has length 78 [2021-11-25 17:57:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:59,703 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 661 transitions. [2021-11-25 17:57:59,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:57:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 661 transitions. [2021-11-25 17:57:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:57:59,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:59,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:59,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:57:59,706 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:57:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1028792160, now seen corresponding path program 1 times [2021-11-25 17:57:59,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:59,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620771127] [2021-11-25 17:57:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:59,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:57:59,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:59,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620771127] [2021-11-25 17:57:59,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620771127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:59,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:59,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:57:59,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878181546] [2021-11-25 17:57:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:59,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:57:59,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:57:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:57:59,851 INFO L87 Difference]: Start difference. First operand 508 states and 661 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:00,853 INFO L93 Difference]: Finished difference Result 1045 states and 1357 transitions. [2021-11-25 17:58:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:00,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:58:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:00,860 INFO L225 Difference]: With dead ends: 1045 [2021-11-25 17:58:00,860 INFO L226 Difference]: Without dead ends: 947 [2021-11-25 17:58:00,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:00,861 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1226 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:00,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1350 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:58:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-25 17:58:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2021-11-25 17:58:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3414634146341464) internal successors, (660), 507 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 660 transitions. [2021-11-25 17:58:00,960 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 660 transitions. Word has length 78 [2021-11-25 17:58:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:00,960 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 660 transitions. [2021-11-25 17:58:00,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 660 transitions. [2021-11-25 17:58:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:58:00,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:00,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:00,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:58:00,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -391975036, now seen corresponding path program 1 times [2021-11-25 17:58:00,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:00,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139531178] [2021-11-25 17:58:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:00,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:01,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:01,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139531178] [2021-11-25 17:58:01,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139531178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:01,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:01,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:01,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768636291] [2021-11-25 17:58:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:01,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:01,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:01,106 INFO L87 Difference]: Start difference. First operand 508 states and 660 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:02,096 INFO L93 Difference]: Finished difference Result 1041 states and 1352 transitions. [2021-11-25 17:58:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:58:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:02,102 INFO L225 Difference]: With dead ends: 1041 [2021-11-25 17:58:02,102 INFO L226 Difference]: Without dead ends: 947 [2021-11-25 17:58:02,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:58:02,104 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 1858 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:02,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 1310 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:58:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-25 17:58:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2021-11-25 17:58:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.339430894308943) internal successors, (659), 507 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 659 transitions. [2021-11-25 17:58:02,209 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 659 transitions. Word has length 78 [2021-11-25 17:58:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 659 transitions. [2021-11-25 17:58:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 659 transitions. [2021-11-25 17:58:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:58:02,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:02,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:02,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:58:02,212 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1002682727, now seen corresponding path program 1 times [2021-11-25 17:58:02,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:02,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088715666] [2021-11-25 17:58:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:02,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:02,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:02,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088715666] [2021-11-25 17:58:02,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088715666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:02,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:02,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:58:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469243570] [2021-11-25 17:58:02,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:02,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:58:02,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:58:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:58:02,409 INFO L87 Difference]: Start difference. First operand 508 states and 659 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:03,659 INFO L93 Difference]: Finished difference Result 870 states and 1134 transitions. [2021-11-25 17:58:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 17:58:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:58:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:03,664 INFO L225 Difference]: With dead ends: 870 [2021-11-25 17:58:03,664 INFO L226 Difference]: Without dead ends: 654 [2021-11-25 17:58:03,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:58:03,666 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1690 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:03,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 1567 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-25 17:58:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 508. [2021-11-25 17:58:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3353658536585367) internal successors, (657), 507 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 657 transitions. [2021-11-25 17:58:03,740 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 657 transitions. Word has length 78 [2021-11-25 17:58:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:03,740 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 657 transitions. [2021-11-25 17:58:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 657 transitions. [2021-11-25 17:58:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:58:03,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:03,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:03,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:58:03,743 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 423246883, now seen corresponding path program 1 times [2021-11-25 17:58:03,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:03,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738606494] [2021-11-25 17:58:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:03,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:03,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:03,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738606494] [2021-11-25 17:58:03,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738606494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:03,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:03,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:03,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018203377] [2021-11-25 17:58:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:03,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:03,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:03,886 INFO L87 Difference]: Start difference. First operand 508 states and 657 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:04,918 INFO L93 Difference]: Finished difference Result 1051 states and 1361 transitions. [2021-11-25 17:58:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:58:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:04,924 INFO L225 Difference]: With dead ends: 1051 [2021-11-25 17:58:04,924 INFO L226 Difference]: Without dead ends: 947 [2021-11-25 17:58:04,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:58:04,927 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1845 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:04,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1324 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:58:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-25 17:58:05,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2021-11-25 17:58:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.33130081300813) internal successors, (655), 507 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 655 transitions. [2021-11-25 17:58:05,009 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 655 transitions. Word has length 78 [2021-11-25 17:58:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:05,009 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 655 transitions. [2021-11-25 17:58:05,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 655 transitions. [2021-11-25 17:58:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:58:05,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:05,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:05,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:58:05,012 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:05,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:05,012 INFO L85 PathProgramCache]: Analyzing trace with hash 832092111, now seen corresponding path program 1 times [2021-11-25 17:58:05,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413792253] [2021-11-25 17:58:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:05,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:05,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:05,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413792253] [2021-11-25 17:58:05,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413792253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:05,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:05,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:05,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655993797] [2021-11-25 17:58:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:05,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:05,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:05,171 INFO L87 Difference]: Start difference. First operand 508 states and 655 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:06,031 INFO L93 Difference]: Finished difference Result 1097 states and 1428 transitions. [2021-11-25 17:58:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 17:58:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:06,037 INFO L225 Difference]: With dead ends: 1097 [2021-11-25 17:58:06,037 INFO L226 Difference]: Without dead ends: 967 [2021-11-25 17:58:06,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:06,039 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1171 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:06,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1630 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-25 17:58:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 508. [2021-11-25 17:58:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3272357723577235) internal successors, (653), 507 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 653 transitions. [2021-11-25 17:58:06,119 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 653 transitions. Word has length 78 [2021-11-25 17:58:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:06,120 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 653 transitions. [2021-11-25 17:58:06,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:06,120 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 653 transitions. [2021-11-25 17:58:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 17:58:06,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:06,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:06,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:58:06,123 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:06,123 INFO L85 PathProgramCache]: Analyzing trace with hash -508022715, now seen corresponding path program 1 times [2021-11-25 17:58:06,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:06,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939996957] [2021-11-25 17:58:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:06,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:06,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939996957] [2021-11-25 17:58:06,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939996957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:06,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:06,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:06,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595615953] [2021-11-25 17:58:06,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:06,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:06,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:06,233 INFO L87 Difference]: Start difference. First operand 508 states and 653 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:07,203 INFO L93 Difference]: Finished difference Result 1087 states and 1412 transitions. [2021-11-25 17:58:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 17:58:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:07,209 INFO L225 Difference]: With dead ends: 1087 [2021-11-25 17:58:07,209 INFO L226 Difference]: Without dead ends: 967 [2021-11-25 17:58:07,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:07,211 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 1687 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:07,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 1656 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-25 17:58:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 504. [2021-11-25 17:58:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3278688524590163) internal successors, (648), 503 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 648 transitions. [2021-11-25 17:58:07,295 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 648 transitions. Word has length 79 [2021-11-25 17:58:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 648 transitions. [2021-11-25 17:58:07,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 648 transitions. [2021-11-25 17:58:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:07,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:07,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:07,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 17:58:07,298 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash 380495892, now seen corresponding path program 1 times [2021-11-25 17:58:07,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:07,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130301427] [2021-11-25 17:58:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:07,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:07,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:07,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130301427] [2021-11-25 17:58:07,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130301427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:07,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:07,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:07,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105534913] [2021-11-25 17:58:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:07,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:07,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:07,428 INFO L87 Difference]: Start difference. First operand 504 states and 648 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:08,478 INFO L93 Difference]: Finished difference Result 1010 states and 1293 transitions. [2021-11-25 17:58:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:08,484 INFO L225 Difference]: With dead ends: 1010 [2021-11-25 17:58:08,484 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:08,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:08,485 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1493 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:08,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1648 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 504. [2021-11-25 17:58:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3258196721311475) internal successors, (647), 503 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 647 transitions. [2021-11-25 17:58:08,557 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 647 transitions. Word has length 80 [2021-11-25 17:58:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:08,557 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 647 transitions. [2021-11-25 17:58:08,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 647 transitions. [2021-11-25 17:58:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:08,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:08,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:08,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 17:58:08,560 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:08,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:08,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2002274302, now seen corresponding path program 1 times [2021-11-25 17:58:08,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:08,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883387748] [2021-11-25 17:58:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:08,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:08,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:08,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883387748] [2021-11-25 17:58:08,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883387748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:08,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:08,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:08,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348696012] [2021-11-25 17:58:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:08,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:08,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:08,676 INFO L87 Difference]: Start difference. First operand 504 states and 647 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:09,753 INFO L93 Difference]: Finished difference Result 1046 states and 1346 transitions. [2021-11-25 17:58:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:09,757 INFO L225 Difference]: With dead ends: 1046 [2021-11-25 17:58:09,757 INFO L226 Difference]: Without dead ends: 943 [2021-11-25 17:58:09,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:09,758 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1121 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:09,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 1544 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:58:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-11-25 17:58:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 504. [2021-11-25 17:58:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3237704918032787) internal successors, (646), 503 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 646 transitions. [2021-11-25 17:58:09,849 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 646 transitions. Word has length 80 [2021-11-25 17:58:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:09,849 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 646 transitions. [2021-11-25 17:58:09,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 646 transitions. [2021-11-25 17:58:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:09,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:09,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:09,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 17:58:09,851 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 891103228, now seen corresponding path program 1 times [2021-11-25 17:58:09,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:09,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327497302] [2021-11-25 17:58:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:09,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:09,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:09,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327497302] [2021-11-25 17:58:09,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327497302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:09,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:09,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:09,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877726215] [2021-11-25 17:58:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:09,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:09,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:09,987 INFO L87 Difference]: Start difference. First operand 504 states and 646 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:11,203 INFO L93 Difference]: Finished difference Result 1007 states and 1288 transitions. [2021-11-25 17:58:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:11,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:11,212 INFO L225 Difference]: With dead ends: 1007 [2021-11-25 17:58:11,217 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:11,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:11,220 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1494 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:11,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 1746 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 504. [2021-11-25 17:58:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.3217213114754098) internal successors, (645), 503 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 645 transitions. [2021-11-25 17:58:11,316 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 645 transitions. Word has length 80 [2021-11-25 17:58:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:11,316 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 645 transitions. [2021-11-25 17:58:11,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 645 transitions. [2021-11-25 17:58:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:11,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:11,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:11,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 17:58:11,318 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash -374640683, now seen corresponding path program 1 times [2021-11-25 17:58:11,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786410194] [2021-11-25 17:58:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:11,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:11,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:11,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786410194] [2021-11-25 17:58:11,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786410194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:11,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:11,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:11,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884415303] [2021-11-25 17:58:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:11,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:11,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:11,516 INFO L87 Difference]: Start difference. First operand 504 states and 645 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:13,404 INFO L93 Difference]: Finished difference Result 1450 states and 1872 transitions. [2021-11-25 17:58:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:58:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:13,411 INFO L225 Difference]: With dead ends: 1450 [2021-11-25 17:58:13,411 INFO L226 Difference]: Without dead ends: 1359 [2021-11-25 17:58:13,413 INFO L932 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 [2021-11-25 17:58:13,413 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 3063 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:13,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 1529 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:58:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-11-25 17:58:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 508. [2021-11-25 17:58:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3191056910569106) internal successors, (649), 507 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 649 transitions. [2021-11-25 17:58:13,522 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 649 transitions. Word has length 80 [2021-11-25 17:58:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:13,522 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 649 transitions. [2021-11-25 17:58:13,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 649 transitions. [2021-11-25 17:58:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:13,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:13,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:13,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 17:58:13,525 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1845105563, now seen corresponding path program 1 times [2021-11-25 17:58:13,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:13,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369482283] [2021-11-25 17:58:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:13,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:13,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:13,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369482283] [2021-11-25 17:58:13,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369482283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:13,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:13,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:13,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331446741] [2021-11-25 17:58:13,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:13,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:13,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:13,650 INFO L87 Difference]: Start difference. First operand 508 states and 649 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:14,718 INFO L93 Difference]: Finished difference Result 1007 states and 1286 transitions. [2021-11-25 17:58:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:14,723 INFO L225 Difference]: With dead ends: 1007 [2021-11-25 17:58:14,723 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:14,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:14,724 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1487 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:14,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1748 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 508. [2021-11-25 17:58:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 492 states have (on average 1.3170731707317074) internal successors, (648), 507 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 648 transitions. [2021-11-25 17:58:14,818 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 648 transitions. Word has length 80 [2021-11-25 17:58:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:14,818 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 648 transitions. [2021-11-25 17:58:14,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 648 transitions. [2021-11-25 17:58:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:14,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:14,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:14,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:58:14,819 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1184234996, now seen corresponding path program 1 times [2021-11-25 17:58:14,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:14,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800934307] [2021-11-25 17:58:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:14,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:15,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:15,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800934307] [2021-11-25 17:58:15,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800934307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:15,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:15,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:15,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373314962] [2021-11-25 17:58:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:15,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:15,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:15,013 INFO L87 Difference]: Start difference. First operand 508 states and 648 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:17,115 INFO L93 Difference]: Finished difference Result 1364 states and 1754 transitions. [2021-11-25 17:58:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:58:17,117 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:17,123 INFO L225 Difference]: With dead ends: 1364 [2021-11-25 17:58:17,123 INFO L226 Difference]: Without dead ends: 1359 [2021-11-25 17:58:17,124 INFO L932 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 [2021-11-25 17:58:17,125 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 2845 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:17,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2845 Valid, 1901 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:58:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-11-25 17:58:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 512. [2021-11-25 17:58:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.314516129032258) internal successors, (652), 511 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 652 transitions. [2021-11-25 17:58:17,216 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 652 transitions. Word has length 80 [2021-11-25 17:58:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:17,217 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 652 transitions. [2021-11-25 17:58:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 652 transitions. [2021-11-25 17:58:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:17,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:17,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:17,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 17:58:17,219 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1196411487, now seen corresponding path program 1 times [2021-11-25 17:58:17,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989098330] [2021-11-25 17:58:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:17,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:17,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:17,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989098330] [2021-11-25 17:58:17,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989098330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:17,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:17,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:17,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484886513] [2021-11-25 17:58:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:17,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:17,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:17,402 INFO L87 Difference]: Start difference. First operand 512 states and 652 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:19,255 INFO L93 Difference]: Finished difference Result 1450 states and 1872 transitions. [2021-11-25 17:58:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:58:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:19,261 INFO L225 Difference]: With dead ends: 1450 [2021-11-25 17:58:19,261 INFO L226 Difference]: Without dead ends: 1362 [2021-11-25 17:58:19,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:58:19,262 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 3107 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:19,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3107 Valid, 1491 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:58:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-25 17:58:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 516. [2021-11-25 17:58:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.312) internal successors, (656), 515 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 656 transitions. [2021-11-25 17:58:19,352 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 656 transitions. Word has length 80 [2021-11-25 17:58:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:19,353 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 656 transitions. [2021-11-25 17:58:19,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 656 transitions. [2021-11-25 17:58:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:19,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:19,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:19,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 17:58:19,355 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1992159898, now seen corresponding path program 1 times [2021-11-25 17:58:19,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239203601] [2021-11-25 17:58:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:19,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:19,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239203601] [2021-11-25 17:58:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239203601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:19,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:19,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:19,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243950784] [2021-11-25 17:58:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:19,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:19,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:19,467 INFO L87 Difference]: Start difference. First operand 516 states and 656 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:20,383 INFO L93 Difference]: Finished difference Result 1005 states and 1281 transitions. [2021-11-25 17:58:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:20,387 INFO L225 Difference]: With dead ends: 1005 [2021-11-25 17:58:20,387 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:20,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:20,388 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1486 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:20,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 1642 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 516. [2021-11-25 17:58:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.31) internal successors, (655), 515 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 655 transitions. [2021-11-25 17:58:20,467 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 655 transitions. Word has length 80 [2021-11-25 17:58:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:20,468 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 655 transitions. [2021-11-25 17:58:20,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 655 transitions. [2021-11-25 17:58:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:20,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:20,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:20,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 17:58:20,470 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash -144938974, now seen corresponding path program 1 times [2021-11-25 17:58:20,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:20,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829161937] [2021-11-25 17:58:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:20,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:20,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829161937] [2021-11-25 17:58:20,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829161937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:20,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:20,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:20,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746956282] [2021-11-25 17:58:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:20,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:20,585 INFO L87 Difference]: Start difference. First operand 516 states and 655 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:21,439 INFO L93 Difference]: Finished difference Result 1069 states and 1367 transitions. [2021-11-25 17:58:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:21,442 INFO L225 Difference]: With dead ends: 1069 [2021-11-25 17:58:21,443 INFO L226 Difference]: Without dead ends: 959 [2021-11-25 17:58:21,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:21,444 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1770 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:21,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 1491 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-25 17:58:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 516. [2021-11-25 17:58:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.306) internal successors, (653), 515 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 653 transitions. [2021-11-25 17:58:21,569 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 653 transitions. Word has length 80 [2021-11-25 17:58:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:21,569 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 653 transitions. [2021-11-25 17:58:21,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 653 transitions. [2021-11-25 17:58:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:21,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:21,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:21,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 17:58:21,572 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2057136076, now seen corresponding path program 1 times [2021-11-25 17:58:21,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:21,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582704977] [2021-11-25 17:58:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:21,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:21,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:21,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582704977] [2021-11-25 17:58:21,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582704977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:21,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:21,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:21,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56410872] [2021-11-25 17:58:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:21,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:21,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:21,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:21,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:21,681 INFO L87 Difference]: Start difference. First operand 516 states and 653 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:22,683 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-25 17:58:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:22,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:22,686 INFO L225 Difference]: With dead ends: 1013 [2021-11-25 17:58:22,687 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:22,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:22,688 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1472 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:22,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 1722 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 516. [2021-11-25 17:58:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 500 states have (on average 1.302) internal successors, (651), 515 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 651 transitions. [2021-11-25 17:58:22,785 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 651 transitions. Word has length 80 [2021-11-25 17:58:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:22,785 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 651 transitions. [2021-11-25 17:58:22,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 651 transitions. [2021-11-25 17:58:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:22,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:22,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:22,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 17:58:22,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2041843904, now seen corresponding path program 1 times [2021-11-25 17:58:22,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:22,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657646616] [2021-11-25 17:58:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:22,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:22,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:22,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657646616] [2021-11-25 17:58:22,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657646616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:22,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:22,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:22,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53408476] [2021-11-25 17:58:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:22,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:22,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:22,965 INFO L87 Difference]: Start difference. First operand 516 states and 651 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:25,023 INFO L93 Difference]: Finished difference Result 1633 states and 2106 transitions. [2021-11-25 17:58:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:58:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:25,031 INFO L225 Difference]: With dead ends: 1633 [2021-11-25 17:58:25,031 INFO L226 Difference]: Without dead ends: 1483 [2021-11-25 17:58:25,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:58:25,033 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 3171 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:25,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3171 Valid, 2445 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:58:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-11-25 17:58:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 524. [2021-11-25 17:58:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 508 states have (on average 1.297244094488189) internal successors, (659), 523 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 659 transitions. [2021-11-25 17:58:25,158 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 659 transitions. Word has length 80 [2021-11-25 17:58:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:25,158 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 659 transitions. [2021-11-25 17:58:25,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 659 transitions. [2021-11-25 17:58:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:25,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:25,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:25,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 17:58:25,161 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1484508438, now seen corresponding path program 1 times [2021-11-25 17:58:25,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:25,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493683787] [2021-11-25 17:58:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:25,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:25,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:25,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493683787] [2021-11-25 17:58:25,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493683787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:25,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:25,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:25,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099886477] [2021-11-25 17:58:25,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:25,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:25,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:25,271 INFO L87 Difference]: Start difference. First operand 524 states and 659 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:26,238 INFO L93 Difference]: Finished difference Result 932 states and 1174 transitions. [2021-11-25 17:58:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:26,242 INFO L225 Difference]: With dead ends: 932 [2021-11-25 17:58:26,242 INFO L226 Difference]: Without dead ends: 927 [2021-11-25 17:58:26,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:26,243 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1468 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:26,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 1723 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-25 17:58:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 524. [2021-11-25 17:58:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 508 states have (on average 1.2933070866141732) internal successors, (657), 523 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 657 transitions. [2021-11-25 17:58:26,345 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 657 transitions. Word has length 80 [2021-11-25 17:58:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 657 transitions. [2021-11-25 17:58:26,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 657 transitions. [2021-11-25 17:58:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:26,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:26,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:26,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 17:58:26,347 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:26,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash -898261756, now seen corresponding path program 1 times [2021-11-25 17:58:26,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:26,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630997586] [2021-11-25 17:58:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:26,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:26,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:26,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630997586] [2021-11-25 17:58:26,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630997586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:26,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:26,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:26,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232857206] [2021-11-25 17:58:26,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:26,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:26,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:26,448 INFO L87 Difference]: Start difference. First operand 524 states and 657 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:27,431 INFO L93 Difference]: Finished difference Result 984 states and 1241 transitions. [2021-11-25 17:58:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:27,436 INFO L225 Difference]: With dead ends: 984 [2021-11-25 17:58:27,436 INFO L226 Difference]: Without dead ends: 967 [2021-11-25 17:58:27,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:27,437 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1597 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:27,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 1580 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-25 17:58:27,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 524. [2021-11-25 17:58:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 508 states have (on average 1.2893700787401574) internal successors, (655), 523 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 655 transitions. [2021-11-25 17:58:27,556 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 655 transitions. Word has length 80 [2021-11-25 17:58:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:27,557 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 655 transitions. [2021-11-25 17:58:27,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 655 transitions. [2021-11-25 17:58:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:27,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:27,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:27,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 17:58:27,559 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1995378919, now seen corresponding path program 1 times [2021-11-25 17:58:27,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:27,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439674505] [2021-11-25 17:58:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:27,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:27,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:27,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439674505] [2021-11-25 17:58:27,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439674505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:27,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:27,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:27,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444202930] [2021-11-25 17:58:27,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:27,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:27,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:27,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:27,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:27,672 INFO L87 Difference]: Start difference. First operand 524 states and 655 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:28,666 INFO L93 Difference]: Finished difference Result 1017 states and 1284 transitions. [2021-11-25 17:58:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:28,670 INFO L225 Difference]: With dead ends: 1017 [2021-11-25 17:58:28,671 INFO L226 Difference]: Without dead ends: 927 [2021-11-25 17:58:28,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:58:28,672 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1467 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:28,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 1754 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-25 17:58:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 524. [2021-11-25 17:58:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 508 states have (on average 1.2854330708661417) internal successors, (653), 523 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 653 transitions. [2021-11-25 17:58:28,771 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 653 transitions. Word has length 80 [2021-11-25 17:58:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:28,772 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 653 transitions. [2021-11-25 17:58:28,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 653 transitions. [2021-11-25 17:58:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 17:58:28,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:28,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:28,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 17:58:28,774 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash 729371863, now seen corresponding path program 1 times [2021-11-25 17:58:28,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:28,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226519573] [2021-11-25 17:58:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:28,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:28,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226519573] [2021-11-25 17:58:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226519573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:28,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:58:28,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219197101] [2021-11-25 17:58:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:58:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:58:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:28,955 INFO L87 Difference]: Start difference. First operand 524 states and 653 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:31,054 INFO L93 Difference]: Finished difference Result 1382 states and 1763 transitions. [2021-11-25 17:58:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 17:58:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 17:58:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:31,060 INFO L225 Difference]: With dead ends: 1382 [2021-11-25 17:58:31,060 INFO L226 Difference]: Without dead ends: 1377 [2021-11-25 17:58:31,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:58:31,062 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 2914 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 1587 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 17:58:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-11-25 17:58:31,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 532. [2021-11-25 17:58:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 516 states have (on average 1.2810077519379846) internal successors, (661), 531 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 661 transitions. [2021-11-25 17:58:31,173 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 661 transitions. Word has length 80 [2021-11-25 17:58:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:31,174 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 661 transitions. [2021-11-25 17:58:31,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 661 transitions. [2021-11-25 17:58:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:58:31,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:31,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:31,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 17:58:31,176 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1004873075, now seen corresponding path program 1 times [2021-11-25 17:58:31,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193975235] [2021-11-25 17:58:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:31,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:31,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:31,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193975235] [2021-11-25 17:58:31,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193975235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:31,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:31,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:31,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714006647] [2021-11-25 17:58:31,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:31,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:31,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:31,284 INFO L87 Difference]: Start difference. First operand 532 states and 661 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:32,239 INFO L93 Difference]: Finished difference Result 1018 states and 1281 transitions. [2021-11-25 17:58:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:58:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:32,243 INFO L225 Difference]: With dead ends: 1018 [2021-11-25 17:58:32,243 INFO L226 Difference]: Without dead ends: 927 [2021-11-25 17:58:32,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:32,244 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1583 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:32,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 1479 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-25 17:58:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 528. [2021-11-25 17:58:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 512 states have (on average 1.28125) internal successors, (656), 527 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 656 transitions. [2021-11-25 17:58:32,370 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 656 transitions. Word has length 81 [2021-11-25 17:58:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:32,371 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 656 transitions. [2021-11-25 17:58:32,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 656 transitions. [2021-11-25 17:58:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:58:32,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:32,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:32,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 17:58:32,373 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2085378986, now seen corresponding path program 1 times [2021-11-25 17:58:32,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:32,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389758488] [2021-11-25 17:58:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:32,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:32,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:32,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389758488] [2021-11-25 17:58:32,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389758488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:32,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:32,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:32,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759621460] [2021-11-25 17:58:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:32,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:32,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:32,470 INFO L87 Difference]: Start difference. First operand 528 states and 656 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:33,446 INFO L93 Difference]: Finished difference Result 932 states and 1165 transitions. [2021-11-25 17:58:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:58:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:33,448 INFO L225 Difference]: With dead ends: 932 [2021-11-25 17:58:33,448 INFO L226 Difference]: Without dead ends: 927 [2021-11-25 17:58:33,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:33,449 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1563 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:33,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 1497 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-25 17:58:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 524. [2021-11-25 17:58:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 508 states have (on average 1.281496062992126) internal successors, (651), 523 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2021-11-25 17:58:33,551 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 81 [2021-11-25 17:58:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:33,552 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2021-11-25 17:58:33,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2021-11-25 17:58:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:58:33,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:33,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 17:58:33,553 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1507957345, now seen corresponding path program 1 times [2021-11-25 17:58:33,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264416112] [2021-11-25 17:58:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:33,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:33,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264416112] [2021-11-25 17:58:33,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264416112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:33,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:33,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467002907] [2021-11-25 17:58:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:33,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:33,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:33,648 INFO L87 Difference]: Start difference. First operand 524 states and 651 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:34,588 INFO L93 Difference]: Finished difference Result 1015 states and 1276 transitions. [2021-11-25 17:58:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:58:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:34,589 INFO L225 Difference]: With dead ends: 1015 [2021-11-25 17:58:34,590 INFO L226 Difference]: Without dead ends: 927 [2021-11-25 17:58:34,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:34,590 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1088 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:34,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 1499 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:58:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-25 17:58:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 520. [2021-11-25 17:58:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 504 states have (on average 1.2817460317460319) internal successors, (646), 519 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 646 transitions. [2021-11-25 17:58:34,700 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 646 transitions. Word has length 81 [2021-11-25 17:58:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:34,700 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 646 transitions. [2021-11-25 17:58:34,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 646 transitions. [2021-11-25 17:58:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:58:34,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:34,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:34,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 17:58:34,702 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1069510264, now seen corresponding path program 1 times [2021-11-25 17:58:34,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926175381] [2021-11-25 17:58:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:34,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:34,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:34,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926175381] [2021-11-25 17:58:34,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926175381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:34,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:34,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:34,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586706461] [2021-11-25 17:58:34,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:34,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:34,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:34,805 INFO L87 Difference]: Start difference. First operand 520 states and 646 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:35,789 INFO L93 Difference]: Finished difference Result 1125 states and 1430 transitions. [2021-11-25 17:58:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:58:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:35,793 INFO L225 Difference]: With dead ends: 1125 [2021-11-25 17:58:35,793 INFO L226 Difference]: Without dead ends: 975 [2021-11-25 17:58:35,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:35,794 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1508 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:35,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 1728 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-11-25 17:58:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 512. [2021-11-25 17:58:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 1.282258064516129) internal successors, (636), 511 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 636 transitions. [2021-11-25 17:58:35,906 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 636 transitions. Word has length 81 [2021-11-25 17:58:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 636 transitions. [2021-11-25 17:58:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 636 transitions. [2021-11-25 17:58:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 17:58:35,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:35,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:35,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 17:58:35,908 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash 869523368, now seen corresponding path program 1 times [2021-11-25 17:58:35,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113510214] [2021-11-25 17:58:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:35,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:36,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113510214] [2021-11-25 17:58:36,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113510214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:36,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:36,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:36,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261001365] [2021-11-25 17:58:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:36,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:36,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:36,010 INFO L87 Difference]: Start difference. First operand 512 states and 636 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:36,978 INFO L93 Difference]: Finished difference Result 924 states and 1153 transitions. [2021-11-25 17:58:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-25 17:58:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:36,980 INFO L225 Difference]: With dead ends: 924 [2021-11-25 17:58:36,980 INFO L226 Difference]: Without dead ends: 919 [2021-11-25 17:58:36,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:36,981 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 1037 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:36,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 1567 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-25 17:58:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 504. [2021-11-25 17:58:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 488 states have (on average 1.2827868852459017) internal successors, (626), 503 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 626 transitions. [2021-11-25 17:58:37,077 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 626 transitions. Word has length 81 [2021-11-25 17:58:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:37,078 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 626 transitions. [2021-11-25 17:58:37,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 626 transitions. [2021-11-25 17:58:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:58:37,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:37,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:37,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 17:58:37,079 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1274155887, now seen corresponding path program 1 times [2021-11-25 17:58:37,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965408244] [2021-11-25 17:58:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:37,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:38,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:38,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965408244] [2021-11-25 17:58:38,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965408244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:38,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-25 17:58:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650152862] [2021-11-25 17:58:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:38,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 17:58:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 17:58:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2021-11-25 17:58:38,189 INFO L87 Difference]: Start difference. First operand 504 states and 626 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:43,552 INFO L93 Difference]: Finished difference Result 1062 states and 1310 transitions. [2021-11-25 17:58:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 17:58:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:58:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:43,553 INFO L225 Difference]: With dead ends: 1062 [2021-11-25 17:58:43,553 INFO L226 Difference]: Without dead ends: 972 [2021-11-25 17:58:43,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=490, Invalid=2372, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 17:58:43,555 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 2707 mSDsluCounter, 10069 mSDsCounter, 0 mSdLazyCounter, 6219 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 10666 SdHoareTripleChecker+Invalid, 6356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 6219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:43,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2707 Valid, 10666 Invalid, 6356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 6219 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 17:58:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-25 17:58:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 520. [2021-11-25 17:58:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 504 states have (on average 1.2817460317460319) internal successors, (646), 519 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 646 transitions. [2021-11-25 17:58:43,670 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 646 transitions. Word has length 82 [2021-11-25 17:58:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:43,670 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 646 transitions. [2021-11-25 17:58:43,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 646 transitions. [2021-11-25 17:58:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:58:43,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:43,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:43,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 17:58:43,672 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1240294261, now seen corresponding path program 1 times [2021-11-25 17:58:43,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:43,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554697168] [2021-11-25 17:58:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:43,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:43,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:43,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554697168] [2021-11-25 17:58:43,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554697168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:43,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:43,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:58:43,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3101545] [2021-11-25 17:58:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:43,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:58:43,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:58:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:58:43,975 INFO L87 Difference]: Start difference. First operand 520 states and 646 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:44,900 INFO L93 Difference]: Finished difference Result 942 states and 1135 transitions. [2021-11-25 17:58:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:58:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:58:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:44,901 INFO L225 Difference]: With dead ends: 942 [2021-11-25 17:58:44,901 INFO L226 Difference]: Without dead ends: 722 [2021-11-25 17:58:44,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:58:44,902 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 1952 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:44,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1952 Valid, 1411 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:58:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-11-25 17:58:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 386. [2021-11-25 17:58:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 375 states have (on average 1.2746666666666666) internal successors, (478), 385 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 478 transitions. [2021-11-25 17:58:45,005 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 478 transitions. Word has length 82 [2021-11-25 17:58:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:45,005 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 478 transitions. [2021-11-25 17:58:45,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 478 transitions. [2021-11-25 17:58:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:58:45,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:45,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:45,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 17:58:45,006 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1213653297, now seen corresponding path program 1 times [2021-11-25 17:58:45,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:45,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070998304] [2021-11-25 17:58:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:45,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:45,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070998304] [2021-11-25 17:58:45,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070998304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:45,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:45,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:58:45,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385825502] [2021-11-25 17:58:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:45,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:58:45,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:58:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:58:45,316 INFO L87 Difference]: Start difference. First operand 386 states and 478 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:46,461 INFO L93 Difference]: Finished difference Result 1112 states and 1427 transitions. [2021-11-25 17:58:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:58:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:46,463 INFO L225 Difference]: With dead ends: 1112 [2021-11-25 17:58:46,463 INFO L226 Difference]: Without dead ends: 972 [2021-11-25 17:58:46,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:58:46,464 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1588 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:46,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 2420 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:58:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-25 17:58:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 332. [2021-11-25 17:58:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 324 states have (on average 1.2561728395061729) internal successors, (407), 331 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 407 transitions. [2021-11-25 17:58:46,562 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 407 transitions. Word has length 82 [2021-11-25 17:58:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:46,563 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 407 transitions. [2021-11-25 17:58:46,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 407 transitions. [2021-11-25 17:58:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:58:46,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:46,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:46,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 17:58:46,564 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash -910264626, now seen corresponding path program 1 times [2021-11-25 17:58:46,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072100947] [2021-11-25 17:58:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:46,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:46,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072100947] [2021-11-25 17:58:46,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072100947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:46,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:46,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:58:46,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836677191] [2021-11-25 17:58:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:46,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:58:46,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:58:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:58:46,857 INFO L87 Difference]: Start difference. First operand 332 states and 407 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:47,629 INFO L93 Difference]: Finished difference Result 582 states and 721 transitions. [2021-11-25 17:58:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:58:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:58:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:47,631 INFO L225 Difference]: With dead ends: 582 [2021-11-25 17:58:47,631 INFO L226 Difference]: Without dead ends: 490 [2021-11-25 17:58:47,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:58:47,632 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1093 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:47,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1507 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:58:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-25 17:58:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 322. [2021-11-25 17:58:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 315 states have (on average 1.2444444444444445) internal successors, (392), 321 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 392 transitions. [2021-11-25 17:58:47,736 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 392 transitions. Word has length 82 [2021-11-25 17:58:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:47,736 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 392 transitions. [2021-11-25 17:58:47,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 392 transitions. [2021-11-25 17:58:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:58:47,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:47,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:47,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 17:58:47,738 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1175029773, now seen corresponding path program 1 times [2021-11-25 17:58:47,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:47,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422910294] [2021-11-25 17:58:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:47,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:48,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:48,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422910294] [2021-11-25 17:58:48,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422910294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:48,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:48,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-25 17:58:48,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808056098] [2021-11-25 17:58:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:48,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:58:48,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:48,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:58:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:58:48,307 INFO L87 Difference]: Start difference. First operand 322 states and 392 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:49,982 INFO L93 Difference]: Finished difference Result 799 states and 998 transitions. [2021-11-25 17:58:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 17:58:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:58:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:49,983 INFO L225 Difference]: With dead ends: 799 [2021-11-25 17:58:49,983 INFO L226 Difference]: Without dead ends: 654 [2021-11-25 17:58:49,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 17:58:49,984 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 848 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:49,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 5128 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-25 17:58:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 304. [2021-11-25 17:58:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 297 states have (on average 1.2323232323232323) internal successors, (366), 303 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 366 transitions. [2021-11-25 17:58:50,081 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 366 transitions. Word has length 82 [2021-11-25 17:58:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:50,082 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 366 transitions. [2021-11-25 17:58:50,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 366 transitions. [2021-11-25 17:58:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 17:58:50,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:50,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:50,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 17:58:50,083 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash -618515849, now seen corresponding path program 1 times [2021-11-25 17:58:50,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:50,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644613082] [2021-11-25 17:58:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:50,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:50,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:50,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644613082] [2021-11-25 17:58:50,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644613082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:50,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:50,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 17:58:50,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987228430] [2021-11-25 17:58:50,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:50,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 17:58:50,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:50,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 17:58:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:58:50,614 INFO L87 Difference]: Start difference. First operand 304 states and 366 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:52,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:52,348 INFO L93 Difference]: Finished difference Result 804 states and 1006 transitions. [2021-11-25 17:58:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:58:52,349 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 17:58:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:52,350 INFO L225 Difference]: With dead ends: 804 [2021-11-25 17:58:52,350 INFO L226 Difference]: Without dead ends: 697 [2021-11-25 17:58:52,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:58:52,351 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 677 mSDsluCounter, 4696 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:52,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 4939 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:58:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-11-25 17:58:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 265. [2021-11-25 17:58:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 259 states have (on average 1.2162162162162162) internal successors, (315), 264 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 315 transitions. [2021-11-25 17:58:52,453 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 315 transitions. Word has length 83 [2021-11-25 17:58:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:52,454 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 315 transitions. [2021-11-25 17:58:52,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 315 transitions. [2021-11-25 17:58:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 17:58:52,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:52,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:52,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 17:58:52,455 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1732888836, now seen corresponding path program 1 times [2021-11-25 17:58:52,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:52,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564035204] [2021-11-25 17:58:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:52,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:52,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:52,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564035204] [2021-11-25 17:58:52,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564035204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:52,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:52,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:52,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830920783] [2021-11-25 17:58:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:52,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:52,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:52,588 INFO L87 Difference]: Start difference. First operand 265 states and 315 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:53,172 INFO L93 Difference]: Finished difference Result 412 states and 495 transitions. [2021-11-25 17:58:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:58:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 17:58:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:53,173 INFO L225 Difference]: With dead ends: 412 [2021-11-25 17:58:53,173 INFO L226 Difference]: Without dead ends: 405 [2021-11-25 17:58:53,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:58:53,185 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 656 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:53,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 722 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:58:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-25 17:58:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 265. [2021-11-25 17:58:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 259 states have (on average 1.2123552123552124) internal successors, (314), 264 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 314 transitions. [2021-11-25 17:58:53,282 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 314 transitions. Word has length 83 [2021-11-25 17:58:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:53,283 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 314 transitions. [2021-11-25 17:58:53,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 314 transitions. [2021-11-25 17:58:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 17:58:53,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:53,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:53,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 17:58:53,284 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:53,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash 956701402, now seen corresponding path program 1 times [2021-11-25 17:58:53,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:53,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752178810] [2021-11-25 17:58:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:53,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:53,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752178810] [2021-11-25 17:58:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752178810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:53,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:58:53,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502780111] [2021-11-25 17:58:53,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:53,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:58:53,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:58:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:58:53,376 INFO L87 Difference]: Start difference. First operand 265 states and 314 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:54,256 INFO L93 Difference]: Finished difference Result 703 states and 880 transitions. [2021-11-25 17:58:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:58:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 17:58:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:54,257 INFO L225 Difference]: With dead ends: 703 [2021-11-25 17:58:54,257 INFO L226 Difference]: Without dead ends: 587 [2021-11-25 17:58:54,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-25 17:58:54,258 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 604 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:54,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 807 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:58:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-25 17:58:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 265. [2021-11-25 17:58:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 259 states have (on average 1.2046332046332047) internal successors, (312), 264 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 312 transitions. [2021-11-25 17:58:54,353 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 312 transitions. Word has length 83 [2021-11-25 17:58:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:54,354 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 312 transitions. [2021-11-25 17:58:54,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 312 transitions. [2021-11-25 17:58:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 17:58:54,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:54,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 17:58:54,355 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash 25209254, now seen corresponding path program 1 times [2021-11-25 17:58:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476915999] [2021-11-25 17:58:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:54,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:54,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:54,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476915999] [2021-11-25 17:58:54,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476915999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:54,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:54,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:58:54,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194608039] [2021-11-25 17:58:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:58:54,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:58:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:58:54,660 INFO L87 Difference]: Start difference. First operand 265 states and 312 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:55,456 INFO L93 Difference]: Finished difference Result 413 states and 493 transitions. [2021-11-25 17:58:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:58:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 17:58:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:55,458 INFO L225 Difference]: With dead ends: 413 [2021-11-25 17:58:55,458 INFO L226 Difference]: Without dead ends: 409 [2021-11-25 17:58:55,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:58:55,458 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1073 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:55,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 1001 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:58:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-25 17:58:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 261. [2021-11-25 17:58:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.203125) internal successors, (308), 260 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 308 transitions. [2021-11-25 17:58:55,556 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 308 transitions. Word has length 83 [2021-11-25 17:58:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:55,557 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 308 transitions. [2021-11-25 17:58:55,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 308 transitions. [2021-11-25 17:58:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 17:58:55,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:55,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:55,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 17:58:55,558 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1755307894, now seen corresponding path program 1 times [2021-11-25 17:58:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647259916] [2021-11-25 17:58:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:55,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:55,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647259916] [2021-11-25 17:58:55,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647259916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:55,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:55,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:58:55,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514319] [2021-11-25 17:58:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:55,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:58:55,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:55,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:58:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:58:55,854 INFO L87 Difference]: Start difference. First operand 261 states and 308 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:56,528 INFO L93 Difference]: Finished difference Result 501 states and 615 transitions. [2021-11-25 17:58:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:58:56,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-25 17:58:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:56,529 INFO L225 Difference]: With dead ends: 501 [2021-11-25 17:58:56,529 INFO L226 Difference]: Without dead ends: 380 [2021-11-25 17:58:56,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:58:56,530 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 598 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:56,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 1667 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:58:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-25 17:58:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 226. [2021-11-25 17:58:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 223 states have (on average 1.201793721973094) internal successors, (268), 225 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 268 transitions. [2021-11-25 17:58:56,625 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 268 transitions. Word has length 83 [2021-11-25 17:58:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 268 transitions. [2021-11-25 17:58:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 268 transitions. [2021-11-25 17:58:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 17:58:56,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:56,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:56,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-25 17:58:56,626 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1737767892, now seen corresponding path program 1 times [2021-11-25 17:58:56,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:56,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208737209] [2021-11-25 17:58:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:56,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:58:57,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208737209] [2021-11-25 17:58:57,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208737209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:57,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:57,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-25 17:58:57,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410480120] [2021-11-25 17:58:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:57,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 17:58:57,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 17:58:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:58:57,497 INFO L87 Difference]: Start difference. First operand 226 states and 268 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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) [2021-11-25 17:58:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:59,567 INFO L93 Difference]: Finished difference Result 267 states and 311 transitions. [2021-11-25 17:58:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 17:58:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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 [2021-11-25 17:58:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:59,568 INFO L225 Difference]: With dead ends: 267 [2021-11-25 17:58:59,568 INFO L226 Difference]: Without dead ends: 259 [2021-11-25 17:58:59,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=345, Invalid=1911, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 17:58:59,570 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 524 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:59,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2144 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 17:58:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-25 17:58:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 240. [2021-11-25 17:58:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 1.2025316455696202) internal successors, (285), 239 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:58:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 285 transitions. [2021-11-25 17:58:59,731 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 285 transitions. Word has length 85 [2021-11-25 17:58:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:59,731 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 285 transitions. [2021-11-25 17:58:59,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 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) [2021-11-25 17:58:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 285 transitions. [2021-11-25 17:58:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 17:58:59,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:59,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:59,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 17:58:59,734 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:58:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2073632219, now seen corresponding path program 1 times [2021-11-25 17:58:59,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642187722] [2021-11-25 17:58:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:59,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:00,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642187722] [2021-11-25 17:59:00,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642187722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:00,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:00,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-25 17:59:00,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021602950] [2021-11-25 17:59:00,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:00,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 17:59:00,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 17:59:00,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-25 17:59:00,775 INFO L87 Difference]: Start difference. First operand 240 states and 285 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 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) [2021-11-25 17:59:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:03,078 INFO L93 Difference]: Finished difference Result 445 states and 548 transitions. [2021-11-25 17:59:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 17:59:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 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 [2021-11-25 17:59:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:03,079 INFO L225 Difference]: With dead ends: 445 [2021-11-25 17:59:03,079 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 17:59:03,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=406, Invalid=2144, Unknown=0, NotChecked=0, Total=2550 [2021-11-25 17:59:03,081 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 856 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:03,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3073 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:59:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 17:59:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 246. [2021-11-25 17:59:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 243 states have (on average 1.205761316872428) internal successors, (293), 245 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 293 transitions. [2021-11-25 17:59:03,180 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 293 transitions. Word has length 85 [2021-11-25 17:59:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:03,180 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 293 transitions. [2021-11-25 17:59:03,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 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) [2021-11-25 17:59:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 293 transitions. [2021-11-25 17:59:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 17:59:03,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:03,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 17:59:03,182 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:03,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1205220568, now seen corresponding path program 1 times [2021-11-25 17:59:03,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730239721] [2021-11-25 17:59:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:03,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:03,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:03,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730239721] [2021-11-25 17:59:03,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730239721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:03,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:03,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:59:03,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588562504] [2021-11-25 17:59:03,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:03,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:59:03,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:59:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:59:03,521 INFO L87 Difference]: Start difference. First operand 246 states and 293 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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) [2021-11-25 17:59:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:05,018 INFO L93 Difference]: Finished difference Result 784 states and 990 transitions. [2021-11-25 17:59:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:59:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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 [2021-11-25 17:59:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:05,025 INFO L225 Difference]: With dead ends: 784 [2021-11-25 17:59:05,025 INFO L226 Difference]: Without dead ends: 769 [2021-11-25 17:59:05,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:59:05,026 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 784 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:05,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 2712 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:59:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-11-25 17:59:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 230. [2021-11-25 17:59:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.2017543859649122) internal successors, (274), 229 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 274 transitions. [2021-11-25 17:59:05,191 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 274 transitions. Word has length 86 [2021-11-25 17:59:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:05,192 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 274 transitions. [2021-11-25 17:59:05,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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) [2021-11-25 17:59:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 274 transitions. [2021-11-25 17:59:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 17:59:05,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:05,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:05,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 17:59:05,192 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1688787753, now seen corresponding path program 1 times [2021-11-25 17:59:05,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811537448] [2021-11-25 17:59:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:05,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:05,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:05,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811537448] [2021-11-25 17:59:05,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811537448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:05,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:05,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 17:59:05,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210853368] [2021-11-25 17:59:05,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:05,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 17:59:05,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 17:59:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-25 17:59:05,669 INFO L87 Difference]: Start difference. First operand 230 states and 274 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 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) [2021-11-25 17:59:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:08,096 INFO L93 Difference]: Finished difference Result 869 states and 1099 transitions. [2021-11-25 17:59:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:59:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 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 [2021-11-25 17:59:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:08,098 INFO L225 Difference]: With dead ends: 869 [2021-11-25 17:59:08,098 INFO L226 Difference]: Without dead ends: 863 [2021-11-25 17:59:08,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-11-25 17:59:08,099 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 1042 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:08,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 4211 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:59:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-25 17:59:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 230. [2021-11-25 17:59:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.1973684210526316) internal successors, (273), 229 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2021-11-25 17:59:08,232 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 86 [2021-11-25 17:59:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:08,232 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2021-11-25 17:59:08,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 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) [2021-11-25 17:59:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2021-11-25 17:59:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 17:59:08,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:08,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:08,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 17:59:08,233 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -612658842, now seen corresponding path program 1 times [2021-11-25 17:59:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:08,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832243217] [2021-11-25 17:59:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:08,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:08,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832243217] [2021-11-25 17:59:08,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832243217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:08,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:08,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 17:59:08,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893294504] [2021-11-25 17:59:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:08,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 17:59:08,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 17:59:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 17:59:08,512 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 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) [2021-11-25 17:59:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:09,443 INFO L93 Difference]: Finished difference Result 542 states and 674 transitions. [2021-11-25 17:59:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:59:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 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 [2021-11-25 17:59:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:09,445 INFO L225 Difference]: With dead ends: 542 [2021-11-25 17:59:09,445 INFO L226 Difference]: Without dead ends: 536 [2021-11-25 17:59:09,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:59:09,446 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 703 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:09,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 1424 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:59:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-25 17:59:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 208. [2021-11-25 17:59:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.1932367149758454) internal successors, (247), 207 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2021-11-25 17:59:09,553 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 86 [2021-11-25 17:59:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:09,553 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2021-11-25 17:59:09,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 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) [2021-11-25 17:59:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2021-11-25 17:59:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 17:59:09,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:09,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:09,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 17:59:09,554 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1279914286, now seen corresponding path program 1 times [2021-11-25 17:59:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:09,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22593626] [2021-11-25 17:59:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:09,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:09,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22593626] [2021-11-25 17:59:09,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22593626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:09,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:09,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:09,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351894671] [2021-11-25 17:59:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:09,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:09,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:09,628 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:09,870 INFO L93 Difference]: Finished difference Result 303 states and 372 transitions. [2021-11-25 17:59:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-25 17:59:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:09,871 INFO L225 Difference]: With dead ends: 303 [2021-11-25 17:59:09,871 INFO L226 Difference]: Without dead ends: 259 [2021-11-25 17:59:09,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:09,872 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 65 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:09,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-25 17:59:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-25 17:59:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2096774193548387) internal successors, (300), 248 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 300 transitions. [2021-11-25 17:59:10,020 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 300 transitions. Word has length 103 [2021-11-25 17:59:10,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:10,021 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 300 transitions. [2021-11-25 17:59:10,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 300 transitions. [2021-11-25 17:59:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 17:59:10,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:10,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:10,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 17:59:10,022 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1764263082, now seen corresponding path program 1 times [2021-11-25 17:59:10,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396227620] [2021-11-25 17:59:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:10,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:10,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:10,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396227620] [2021-11-25 17:59:10,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396227620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:10,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:10,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:10,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180216663] [2021-11-25 17:59:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:10,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:10,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:10,074 INFO L87 Difference]: Start difference. First operand 249 states and 300 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:10,553 INFO L93 Difference]: Finished difference Result 497 states and 628 transitions. [2021-11-25 17:59:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:10,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-25 17:59:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:10,554 INFO L225 Difference]: With dead ends: 497 [2021-11-25 17:59:10,555 INFO L226 Difference]: Without dead ends: 373 [2021-11-25 17:59:10,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:10,556 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 58 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:10,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-25 17:59:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 359. [2021-11-25 17:59:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.2430167597765363) internal successors, (445), 358 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 445 transitions. [2021-11-25 17:59:10,822 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 445 transitions. Word has length 106 [2021-11-25 17:59:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:10,822 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 445 transitions. [2021-11-25 17:59:10,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 445 transitions. [2021-11-25 17:59:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-25 17:59:10,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:10,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:10,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 17:59:10,823 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1482616109, now seen corresponding path program 1 times [2021-11-25 17:59:10,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486439227] [2021-11-25 17:59:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:10,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:10,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486439227] [2021-11-25 17:59:10,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486439227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:10,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:10,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:10,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267428671] [2021-11-25 17:59:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:10,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:10,878 INFO L87 Difference]: Start difference. First operand 359 states and 445 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:11,722 INFO L93 Difference]: Finished difference Result 827 states and 1063 transitions. [2021-11-25 17:59:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-25 17:59:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:11,724 INFO L225 Difference]: With dead ends: 827 [2021-11-25 17:59:11,724 INFO L226 Difference]: Without dead ends: 593 [2021-11-25 17:59:11,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:11,725 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 51 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:11,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:11,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-25 17:59:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 567. [2021-11-25 17:59:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.2667844522968197) internal successors, (717), 566 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 717 transitions. [2021-11-25 17:59:12,233 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 717 transitions. Word has length 109 [2021-11-25 17:59:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:12,234 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 717 transitions. [2021-11-25 17:59:12,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 717 transitions. [2021-11-25 17:59:12,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 17:59:12,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:12,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:12,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 17:59:12,235 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1831546139, now seen corresponding path program 1 times [2021-11-25 17:59:12,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:12,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739084506] [2021-11-25 17:59:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:12,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:12,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:12,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739084506] [2021-11-25 17:59:12,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739084506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:12,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:12,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:12,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107900245] [2021-11-25 17:59:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:12,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:12,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:12,287 INFO L87 Difference]: Start difference. First operand 567 states and 717 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:13,270 INFO L93 Difference]: Finished difference Result 1451 states and 1879 transitions. [2021-11-25 17:59:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:13,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-25 17:59:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:13,277 INFO L225 Difference]: With dead ends: 1451 [2021-11-25 17:59:13,277 INFO L226 Difference]: Without dead ends: 1009 [2021-11-25 17:59:13,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:13,278 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 44 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:13,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-11-25 17:59:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 959. [2021-11-25 17:59:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.278705636743215) internal successors, (1225), 958 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1225 transitions. [2021-11-25 17:59:14,259 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1225 transitions. Word has length 112 [2021-11-25 17:59:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:14,259 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1225 transitions. [2021-11-25 17:59:14,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1225 transitions. [2021-11-25 17:59:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 17:59:14,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:14,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:14,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-25 17:59:14,260 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1847435234, now seen corresponding path program 1 times [2021-11-25 17:59:14,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:14,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081706571] [2021-11-25 17:59:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:14,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:14,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:14,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081706571] [2021-11-25 17:59:14,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081706571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:14,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:14,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:14,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413908250] [2021-11-25 17:59:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:14,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:14,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:14,313 INFO L87 Difference]: Start difference. First operand 959 states and 1225 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:16,216 INFO L93 Difference]: Finished difference Result 2627 states and 3403 transitions. [2021-11-25 17:59:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-25 17:59:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:16,218 INFO L225 Difference]: With dead ends: 2627 [2021-11-25 17:59:16,219 INFO L226 Difference]: Without dead ends: 1793 [2021-11-25 17:59:16,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:16,220 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 34 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:16,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 296 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-25 17:59:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1695. [2021-11-25 17:59:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.280401416765053) internal successors, (2169), 1694 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2169 transitions. [2021-11-25 17:59:18,078 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2169 transitions. Word has length 115 [2021-11-25 17:59:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:18,079 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 2169 transitions. [2021-11-25 17:59:18,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2169 transitions. [2021-11-25 17:59:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 17:59:18,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:18,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:18,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-25 17:59:18,080 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:18,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash 208761750, now seen corresponding path program 1 times [2021-11-25 17:59:18,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:18,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205160947] [2021-11-25 17:59:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:18,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:18,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:18,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205160947] [2021-11-25 17:59:18,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205160947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:18,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:18,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:59:18,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700190513] [2021-11-25 17:59:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:18,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:59:18,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:59:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:59:18,160 INFO L87 Difference]: Start difference. First operand 1695 states and 2169 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:24,075 INFO L93 Difference]: Finished difference Result 6800 states and 8788 transitions. [2021-11-25 17:59:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:59:24,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-25 17:59:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:24,092 INFO L225 Difference]: With dead ends: 6800 [2021-11-25 17:59:24,092 INFO L226 Difference]: Without dead ends: 5230 [2021-11-25 17:59:24,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:59:24,096 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 824 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:24,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1381 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:59:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2021-11-25 17:59:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 2459. [2021-11-25 17:59:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2458 states have (on average 1.2713588283157038) internal successors, (3125), 2458 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3125 transitions. [2021-11-25 17:59:26,963 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3125 transitions. Word has length 118 [2021-11-25 17:59:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:26,964 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 3125 transitions. [2021-11-25 17:59:26,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3125 transitions. [2021-11-25 17:59:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 17:59:26,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:26,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:26,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-25 17:59:26,966 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1759867255, now seen corresponding path program 1 times [2021-11-25 17:59:26,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:26,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718274247] [2021-11-25 17:59:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:26,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:27,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718274247] [2021-11-25 17:59:27,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718274247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:27,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:27,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:59:27,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973784281] [2021-11-25 17:59:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:27,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:59:27,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:59:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:59:27,130 INFO L87 Difference]: Start difference. First operand 2459 states and 3125 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:30,389 INFO L93 Difference]: Finished difference Result 4795 states and 6115 transitions. [2021-11-25 17:59:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:59:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-25 17:59:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:30,392 INFO L225 Difference]: With dead ends: 4795 [2021-11-25 17:59:30,392 INFO L226 Difference]: Without dead ends: 2461 [2021-11-25 17:59:30,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:59:30,395 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 441 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:30,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 418 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:59:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-11-25 17:59:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2459. [2021-11-25 17:59:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2458 states have (on average 1.2705451586655818) internal successors, (3123), 2458 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3123 transitions. [2021-11-25 17:59:33,091 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3123 transitions. Word has length 120 [2021-11-25 17:59:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:33,091 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 3123 transitions. [2021-11-25 17:59:33,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3123 transitions. [2021-11-25 17:59:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 17:59:33,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:33,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:33,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-25 17:59:33,093 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1095330802, now seen corresponding path program 1 times [2021-11-25 17:59:33,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:33,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527635500] [2021-11-25 17:59:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:33,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:33,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:33,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527635500] [2021-11-25 17:59:33,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527635500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:33,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:33,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:33,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474951375] [2021-11-25 17:59:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:33,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:33,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:33,146 INFO L87 Difference]: Start difference. First operand 2459 states and 3123 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:36,735 INFO L93 Difference]: Finished difference Result 5403 states and 6895 transitions. [2021-11-25 17:59:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:36,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-25 17:59:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:36,740 INFO L225 Difference]: With dead ends: 5403 [2021-11-25 17:59:36,740 INFO L226 Difference]: Without dead ends: 3069 [2021-11-25 17:59:36,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:36,744 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 80 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:36,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 228 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:59:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-11-25 17:59:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 3067. [2021-11-25 17:59:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 1.2632093933463797) internal successors, (3873), 3066 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 3873 transitions. [2021-11-25 17:59:40,140 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 3873 transitions. Word has length 120 [2021-11-25 17:59:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:40,140 INFO L470 AbstractCegarLoop]: Abstraction has 3067 states and 3873 transitions. [2021-11-25 17:59:40,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 3873 transitions. [2021-11-25 17:59:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 17:59:40,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:40,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-25 17:59:40,141 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:40,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash 871204805, now seen corresponding path program 1 times [2021-11-25 17:59:40,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:40,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065273969] [2021-11-25 17:59:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:40,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:40,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:40,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065273969] [2021-11-25 17:59:40,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065273969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:40,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:40,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:59:40,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522721172] [2021-11-25 17:59:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:40,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:59:40,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:59:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:59:40,226 INFO L87 Difference]: Start difference. First operand 3067 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:45,356 INFO L93 Difference]: Finished difference Result 4234 states and 5289 transitions. [2021-11-25 17:59:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:59:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-25 17:59:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:45,362 INFO L225 Difference]: With dead ends: 4234 [2021-11-25 17:59:45,362 INFO L226 Difference]: Without dead ends: 4232 [2021-11-25 17:59:45,363 INFO L932 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 [2021-11-25 17:59:45,364 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 331 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:45,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 951 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:59:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2021-11-25 17:59:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3067. [2021-11-25 17:59:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 1.2475538160469668) internal successors, (3825), 3066 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 3825 transitions. [2021-11-25 17:59:48,804 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 3825 transitions. Word has length 121 [2021-11-25 17:59:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:48,804 INFO L470 AbstractCegarLoop]: Abstraction has 3067 states and 3825 transitions. [2021-11-25 17:59:48,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:59:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 3825 transitions. [2021-11-25 17:59:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 17:59:48,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:48,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:48,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-25 17:59:48,806 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 17:59:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1902278096, now seen corresponding path program 1 times [2021-11-25 17:59:48,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:48,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818164864] [2021-11-25 17:59:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:48,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:59:53,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:53,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818164864] [2021-11-25 17:59:53,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818164864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:59:53,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709101664] [2021-11-25 17:59:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:53,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:59:53,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:59:53,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:59:53,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:59:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 17:59:53,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:59:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 17:59:55,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:59:55,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709101664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:55,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:59:55,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [40] total 46 [2021-11-25 17:59:55,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948599942] [2021-11-25 17:59:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:55,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:59:55,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:59:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1992, Unknown=0, NotChecked=0, Total=2162 [2021-11-25 17:59:55,273 INFO L87 Difference]: Start difference. First operand 3067 states and 3825 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:01,385 INFO L93 Difference]: Finished difference Result 7650 states and 9577 transitions. [2021-11-25 18:00:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:00:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-25 18:00:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:01,390 INFO L225 Difference]: With dead ends: 7650 [2021-11-25 18:00:01,390 INFO L226 Difference]: Without dead ends: 4693 [2021-11-25 18:00:01,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=220, Invalid=2642, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:00:01,394 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 379 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:01,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 482 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:00:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-11-25 18:00:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 3067. [2021-11-25 18:00:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 1.2469015003261579) internal successors, (3823), 3066 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 3823 transitions. [2021-11-25 18:00:04,831 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 3823 transitions. Word has length 140 [2021-11-25 18:00:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:04,831 INFO L470 AbstractCegarLoop]: Abstraction has 3067 states and 3823 transitions. [2021-11-25 18:00:04,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 3823 transitions. [2021-11-25 18:00:04,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 18:00:04,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:04,832 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:04,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 18:00:05,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:05,036 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 18:00:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash 292618243, now seen corresponding path program 1 times [2021-11-25 18:00:05,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:05,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917529052] [2021-11-25 18:00:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:05,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 18:00:06,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917529052] [2021-11-25 18:00:06,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917529052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:06,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:06,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-25 18:00:06,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400979231] [2021-11-25 18:00:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:06,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 18:00:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 18:00:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-25 18:00:06,129 INFO L87 Difference]: Start difference. First operand 3067 states and 3823 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:15,427 INFO L93 Difference]: Finished difference Result 8995 states and 11248 transitions. [2021-11-25 18:00:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 18:00:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-25 18:00:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:15,433 INFO L225 Difference]: With dead ends: 8995 [2021-11-25 18:00:15,433 INFO L226 Difference]: Without dead ends: 6043 [2021-11-25 18:00:15,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=359, Invalid=1897, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 18:00:15,437 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 494 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:15,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 2793 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:00:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2021-11-25 18:00:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 3082. [2021-11-25 18:00:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3081 states have (on average 1.2463485881207401) internal successors, (3840), 3081 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 3840 transitions. [2021-11-25 18:00:18,985 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 3840 transitions. Word has length 142 [2021-11-25 18:00:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 3840 transitions. [2021-11-25 18:00:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 3840 transitions. [2021-11-25 18:00:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 18:00:18,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:18,987 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:18,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-25 18:00:18,987 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 18:00:18,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1744419660, now seen corresponding path program 1 times [2021-11-25 18:00:18,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:18,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005183517] [2021-11-25 18:00:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:18,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:00:19,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005183517] [2021-11-25 18:00:19,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005183517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:19,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:19,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:00:19,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629605835] [2021-11-25 18:00:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:19,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:00:19,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:00:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:00:19,043 INFO L87 Difference]: Start difference. First operand 3082 states and 3840 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:22,639 INFO L93 Difference]: Finished difference Result 5178 states and 6477 transitions. [2021-11-25 18:00:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:00:22,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-25 18:00:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:22,643 INFO L225 Difference]: With dead ends: 5178 [2021-11-25 18:00:22,643 INFO L226 Difference]: Without dead ends: 3082 [2021-11-25 18:00:22,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:00:22,645 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 175 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:22,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 170 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:00:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-25 18:00:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2207. [2021-11-25 18:00:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2206 states have (on average 1.2275611967361741) internal successors, (2708), 2206 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2708 transitions. [2021-11-25 18:00:25,723 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2708 transitions. Word has length 143 [2021-11-25 18:00:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:25,723 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2708 transitions. [2021-11-25 18:00:25,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:00:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2708 transitions. [2021-11-25 18:00:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 18:00:25,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:25,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:25,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-25 18:00:25,744 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-25 18:00:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1130396807, now seen corresponding path program 1 times [2021-11-25 18:00:25,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185203098] [2021-11-25 18:00:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:25,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:00:31,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:31,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185203098] [2021-11-25 18:00:31,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185203098] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:00:31,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241911987] [2021-11-25 18:00:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:31,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:31,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:31,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:00:31,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771228a6-308b-40fa-adc4-cde00bc3cea2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:00:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:31,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-25 18:00:31,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:01:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:03,073 INFO L328 TraceCheckSpWp]: Computing backward predicates...