./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI --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 c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:20:53,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:53,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:53,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:53,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:53,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:53,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:53,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:53,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:53,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:53,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:53,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:53,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:53,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:53,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:53,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:53,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:53,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:53,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:53,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:53,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:53,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:53,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:53,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:53,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:53,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:53,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:53,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:53,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:53,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:53,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:53,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:53,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:53,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:53,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:53,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:53,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:53,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:53,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:53,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:53,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:20:53,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:53,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:53,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:53,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:53,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:53,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:53,630 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:53,630 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:53,630 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:53,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:53,632 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:53,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:53,632 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:53,633 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:53,633 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:53,633 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:53,633 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:53,634 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:53,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:53,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:20:53,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:53,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:20:53,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:53,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:53,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:53,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:53,638 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:20:53,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:53,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:53,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:53,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:53,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:53,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:53,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:53,641 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:53,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:53,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:53,642 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:53,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:53,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:53,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:53,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 [2022-11-03 02:20:53,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:54,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:54,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:54,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:54,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:54,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:54,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/data/b87b77179/f29867399fff4140a86e12f1f9261a50/FLAG40cfb9ebd [2022-11-03 02:20:54,874 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:54,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:54,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/data/b87b77179/f29867399fff4140a86e12f1f9261a50/FLAG40cfb9ebd [2022-11-03 02:20:55,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/data/b87b77179/f29867399fff4140a86e12f1f9261a50 [2022-11-03 02:20:55,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:55,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:55,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:55,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:55,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:55,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:55,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54522a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:55, skipping insertion in model container [2022-11-03 02:20:55,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:55" (1/1) ... [2022-11-03 02:20:55,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:55,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:55,572 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2022-11-03 02:20:55,600 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2022-11-03 02:20:55,611 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2022-11-03 02:20:55,618 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2022-11-03 02:20:55,636 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2022-11-03 02:20:55,643 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2022-11-03 02:20:55,671 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2022-11-03 02:20:55,691 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2022-11-03 02:20:55,707 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2022-11-03 02:20:55,718 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2022-11-03 02:20:55,736 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2022-11-03 02:20:55,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:55,857 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:55,944 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2022-11-03 02:20:55,989 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2022-11-03 02:20:56,013 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2022-11-03 02:20:56,022 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2022-11-03 02:20:56,049 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2022-11-03 02:20:56,060 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2022-11-03 02:20:56,069 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2022-11-03 02:20:56,089 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2022-11-03 02:20:56,102 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2022-11-03 02:20:56,110 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2022-11-03 02:20:56,140 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_f634b108-2422-4afe-9b4e-41ac0271df83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2022-11-03 02:20:56,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:56,319 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:56,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56 WrapperNode [2022-11-03 02:20:56,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:56,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:56,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:56,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:56,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,488 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1870 [2022-11-03 02:20:56,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:56,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:56,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:56,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:56,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:56,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:56,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:56,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:56,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (1/1) ... [2022-11-03 02:20:56,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:56,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:56,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:56,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:56,997 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:57,000 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:58,599 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:58,720 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:58,720 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:20:58,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:58 BoogieIcfgContainer [2022-11-03 02:20:58,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:58,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:58,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:58,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:58,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:55" (1/3) ... [2022-11-03 02:20:58,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:58, skipping insertion in model container [2022-11-03 02:20:58,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:56" (2/3) ... [2022-11-03 02:20:58,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:58, skipping insertion in model container [2022-11-03 02:20:58,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:58" (3/3) ... [2022-11-03 02:20:58,736 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:58,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:58,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-03 02:20:58,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:58,868 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50b482b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:58,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-03 02:20:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 339 states, 327 states have (on average 1.8440366972477065) internal successors, (603), 338 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 02:20:58,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:58,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:58,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:20:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -972469851, now seen corresponding path program 1 times [2022-11-03 02:20:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:58,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615141398] [2022-11-03 02:20:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:59,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:59,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615141398] [2022-11-03 02:20:59,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615141398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:59,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:59,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:59,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822641866] [2022-11-03 02:20:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:59,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:59,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:59,815 INFO L87 Difference]: Start difference. First operand has 339 states, 327 states have (on average 1.8440366972477065) internal successors, (603), 338 states have internal predecessors, (603), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:00,366 INFO L93 Difference]: Finished difference Result 531 states and 907 transitions. [2022-11-03 02:21:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-03 02:21:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:00,400 INFO L225 Difference]: With dead ends: 531 [2022-11-03 02:21:00,400 INFO L226 Difference]: Without dead ends: 285 [2022-11-03 02:21:00,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:00,411 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1359 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:00,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 358 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-03 02:21:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-11-03 02:21:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 274 states have (on average 1.2554744525547445) internal successors, (344), 284 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2022-11-03 02:21:00,526 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 58 [2022-11-03 02:21:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:00,527 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2022-11-03 02:21:00,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2022-11-03 02:21:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:21:00,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:00,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:21:00,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2110592992, now seen corresponding path program 1 times [2022-11-03 02:21:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640653463] [2022-11-03 02:21:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:00,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:00,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640653463] [2022-11-03 02:21:00,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640653463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:00,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:00,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830653982] [2022-11-03 02:21:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:00,700 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:00,993 INFO L93 Difference]: Finished difference Result 471 states and 582 transitions. [2022-11-03 02:21:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-03 02:21:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:00,995 INFO L225 Difference]: With dead ends: 471 [2022-11-03 02:21:00,996 INFO L226 Difference]: Without dead ends: 265 [2022-11-03 02:21:00,997 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:00,998 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 866 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:00,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 191 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-03 02:21:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-11-03 02:21:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.2559055118110236) internal successors, (319), 264 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 319 transitions. [2022-11-03 02:21:01,025 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 319 transitions. Word has length 59 [2022-11-03 02:21:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:01,025 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 319 transitions. [2022-11-03 02:21:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 319 transitions. [2022-11-03 02:21:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:21:01,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:01,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:21:01,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:01,042 INFO L85 PathProgramCache]: Analyzing trace with hash -287578716, now seen corresponding path program 1 times [2022-11-03 02:21:01,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:01,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069116321] [2022-11-03 02:21:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:01,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:01,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069116321] [2022-11-03 02:21:01,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069116321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:01,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:01,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625371070] [2022-11-03 02:21:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:01,297 INFO L87 Difference]: Start difference. First operand 265 states and 319 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:01,548 INFO L93 Difference]: Finished difference Result 451 states and 556 transitions. [2022-11-03 02:21:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-03 02:21:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:01,550 INFO L225 Difference]: With dead ends: 451 [2022-11-03 02:21:01,551 INFO L226 Difference]: Without dead ends: 243 [2022-11-03 02:21:01,553 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:01,557 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 830 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:01,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 179 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-03 02:21:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-11-03 02:21:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2672413793103448) internal successors, (294), 242 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 294 transitions. [2022-11-03 02:21:01,590 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 294 transitions. Word has length 60 [2022-11-03 02:21:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:01,592 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 294 transitions. [2022-11-03 02:21:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 294 transitions. [2022-11-03 02:21:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:21:01,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:01,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:01,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:21:01,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -686799403, now seen corresponding path program 1 times [2022-11-03 02:21:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843307927] [2022-11-03 02:21:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:01,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:01,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843307927] [2022-11-03 02:21:01,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843307927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:01,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:01,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:01,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486099327] [2022-11-03 02:21:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:01,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:01,805 INFO L87 Difference]: Start difference. First operand 243 states and 294 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:02,181 INFO L93 Difference]: Finished difference Result 546 states and 675 transitions. [2022-11-03 02:21:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:21:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:02,184 INFO L225 Difference]: With dead ends: 546 [2022-11-03 02:21:02,184 INFO L226 Difference]: Without dead ends: 346 [2022-11-03 02:21:02,185 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:02,187 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1032 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:02,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 261 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-03 02:21:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 304. [2022-11-03 02:21:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3139931740614335) internal successors, (385), 303 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 385 transitions. [2022-11-03 02:21:02,223 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 385 transitions. Word has length 61 [2022-11-03 02:21:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:02,223 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 385 transitions. [2022-11-03 02:21:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 385 transitions. [2022-11-03 02:21:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:21:02,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:02,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:21:02,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -617130845, now seen corresponding path program 1 times [2022-11-03 02:21:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668852218] [2022-11-03 02:21:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:02,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668852218] [2022-11-03 02:21:02,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668852218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:02,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:02,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:21:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446398559] [2022-11-03 02:21:02,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:21:02,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:02,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:21:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:02,960 INFO L87 Difference]: Start difference. First operand 304 states and 385 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:04,247 INFO L93 Difference]: Finished difference Result 716 states and 907 transitions. [2022-11-03 02:21:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:21:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 02:21:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:04,252 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:21:04,253 INFO L226 Difference]: Without dead ends: 639 [2022-11-03 02:21:04,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:21:04,255 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1540 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:04,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 935 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:21:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-03 02:21:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 311. [2022-11-03 02:21:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3166666666666667) internal successors, (395), 310 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 395 transitions. [2022-11-03 02:21:04,311 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 395 transitions. Word has length 62 [2022-11-03 02:21:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:04,315 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 395 transitions. [2022-11-03 02:21:04,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 395 transitions. [2022-11-03 02:21:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:21:04,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:04,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:21:04,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1295066257, now seen corresponding path program 1 times [2022-11-03 02:21:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:04,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915541233] [2022-11-03 02:21:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:04,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:04,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:04,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915541233] [2022-11-03 02:21:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915541233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:04,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:04,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:21:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218742049] [2022-11-03 02:21:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:21:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:21:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:04,886 INFO L87 Difference]: Start difference. First operand 311 states and 395 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:06,160 INFO L93 Difference]: Finished difference Result 771 states and 982 transitions. [2022-11-03 02:21:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:21:06,160 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 02:21:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:06,164 INFO L225 Difference]: With dead ends: 771 [2022-11-03 02:21:06,164 INFO L226 Difference]: Without dead ends: 682 [2022-11-03 02:21:06,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:21:06,173 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1199 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:06,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1006 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:21:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-03 02:21:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 311. [2022-11-03 02:21:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 310 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 394 transitions. [2022-11-03 02:21:06,231 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 394 transitions. Word has length 62 [2022-11-03 02:21:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:06,232 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 394 transitions. [2022-11-03 02:21:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 394 transitions. [2022-11-03 02:21:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:21:06,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:06,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:21:06,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1025976073, now seen corresponding path program 1 times [2022-11-03 02:21:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:06,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955955184] [2022-11-03 02:21:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:06,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:06,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:06,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955955184] [2022-11-03 02:21:06,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955955184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:06,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:06,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:06,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493082761] [2022-11-03 02:21:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:06,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:06,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:06,655 INFO L87 Difference]: Start difference. First operand 311 states and 394 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:07,708 INFO L93 Difference]: Finished difference Result 720 states and 926 transitions. [2022-11-03 02:21:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:21:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 02:21:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:07,713 INFO L225 Difference]: With dead ends: 720 [2022-11-03 02:21:07,713 INFO L226 Difference]: Without dead ends: 636 [2022-11-03 02:21:07,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:21:07,716 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 966 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:07,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1017 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-03 02:21:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 311. [2022-11-03 02:21:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.31) internal successors, (393), 310 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 393 transitions. [2022-11-03 02:21:07,789 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 393 transitions. Word has length 62 [2022-11-03 02:21:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:07,791 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 393 transitions. [2022-11-03 02:21:07,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 393 transitions. [2022-11-03 02:21:07,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:21:07,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:07,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:07,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:21:07,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:07,795 INFO L85 PathProgramCache]: Analyzing trace with hash 762232665, now seen corresponding path program 1 times [2022-11-03 02:21:07,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:07,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683521730] [2022-11-03 02:21:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:07,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:08,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:08,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683521730] [2022-11-03 02:21:08,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683521730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:08,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:08,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:08,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186407338] [2022-11-03 02:21:08,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:21:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:21:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:08,245 INFO L87 Difference]: Start difference. First operand 311 states and 393 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:08,878 INFO L93 Difference]: Finished difference Result 593 states and 734 transitions. [2022-11-03 02:21:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:21:08,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 02:21:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:08,881 INFO L225 Difference]: With dead ends: 593 [2022-11-03 02:21:08,882 INFO L226 Difference]: Without dead ends: 442 [2022-11-03 02:21:08,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:21:08,883 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1059 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:08,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 524 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:21:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-03 02:21:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 311. [2022-11-03 02:21:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3066666666666666) internal successors, (392), 310 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) [2022-11-03 02:21:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2022-11-03 02:21:08,988 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 62 [2022-11-03 02:21:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:08,988 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2022-11-03 02:21:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2022-11-03 02:21:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:08,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:08,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:21:08,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2079212864, now seen corresponding path program 1 times [2022-11-03 02:21:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:08,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144254701] [2022-11-03 02:21:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:09,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:09,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144254701] [2022-11-03 02:21:09,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144254701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:09,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:09,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618665008] [2022-11-03 02:21:09,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:09,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:09,409 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:10,252 INFO L93 Difference]: Finished difference Result 490 states and 622 transitions. [2022-11-03 02:21:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:10,255 INFO L225 Difference]: With dead ends: 490 [2022-11-03 02:21:10,255 INFO L226 Difference]: Without dead ends: 384 [2022-11-03 02:21:10,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:21:10,257 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 992 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:10,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 668 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-03 02:21:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-11-03 02:21:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3037542662116042) internal successors, (382), 303 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 382 transitions. [2022-11-03 02:21:10,329 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 382 transitions. Word has length 64 [2022-11-03 02:21:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:10,329 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 382 transitions. [2022-11-03 02:21:10,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 382 transitions. [2022-11-03 02:21:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:10,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:10,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:21:10,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:10,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 350648810, now seen corresponding path program 1 times [2022-11-03 02:21:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:10,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182121619] [2022-11-03 02:21:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:10,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:10,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182121619] [2022-11-03 02:21:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182121619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:10,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:10,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613500854] [2022-11-03 02:21:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:10,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:10,692 INFO L87 Difference]: Start difference. First operand 304 states and 382 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:11,823 INFO L93 Difference]: Finished difference Result 686 states and 870 transitions. [2022-11-03 02:21:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:21:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:11,826 INFO L225 Difference]: With dead ends: 686 [2022-11-03 02:21:11,827 INFO L226 Difference]: Without dead ends: 609 [2022-11-03 02:21:11,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:21:11,828 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 909 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:11,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1031 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-03 02:21:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-11-03 02:21:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3003412969283277) internal successors, (381), 303 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 381 transitions. [2022-11-03 02:21:11,899 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 381 transitions. Word has length 64 [2022-11-03 02:21:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 381 transitions. [2022-11-03 02:21:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 381 transitions. [2022-11-03 02:21:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:11,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:11,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:11,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:21:11,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2032121384, now seen corresponding path program 1 times [2022-11-03 02:21:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:11,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854185629] [2022-11-03 02:21:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:12,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:12,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854185629] [2022-11-03 02:21:12,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854185629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:12,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:12,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:12,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000938548] [2022-11-03 02:21:12,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:12,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:12,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:12,267 INFO L87 Difference]: Start difference. First operand 304 states and 381 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:13,296 INFO L93 Difference]: Finished difference Result 718 states and 917 transitions. [2022-11-03 02:21:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:13,301 INFO L225 Difference]: With dead ends: 718 [2022-11-03 02:21:13,301 INFO L226 Difference]: Without dead ends: 629 [2022-11-03 02:21:13,302 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:13,303 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 746 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:13,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 903 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:21:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-03 02:21:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 304. [2022-11-03 02:21:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2969283276450512) internal successors, (380), 303 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 380 transitions. [2022-11-03 02:21:13,405 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 380 transitions. Word has length 64 [2022-11-03 02:21:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:13,405 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 380 transitions. [2022-11-03 02:21:13,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 380 transitions. [2022-11-03 02:21:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:13,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:13,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:21:13,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash 861544116, now seen corresponding path program 1 times [2022-11-03 02:21:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:13,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797692584] [2022-11-03 02:21:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:13,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:13,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:13,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797692584] [2022-11-03 02:21:13,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797692584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:13,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:13,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:13,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412378770] [2022-11-03 02:21:13,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:13,733 INFO L87 Difference]: Start difference. First operand 304 states and 380 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:14,719 INFO L93 Difference]: Finished difference Result 683 states and 865 transitions. [2022-11-03 02:21:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:14,723 INFO L225 Difference]: With dead ends: 683 [2022-11-03 02:21:14,723 INFO L226 Difference]: Without dead ends: 609 [2022-11-03 02:21:14,723 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:14,724 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1068 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:14,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 832 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-03 02:21:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-11-03 02:21:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2935153583617747) internal successors, (379), 303 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 379 transitions. [2022-11-03 02:21:14,811 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 379 transitions. Word has length 64 [2022-11-03 02:21:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:14,811 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 379 transitions. [2022-11-03 02:21:14,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 379 transitions. [2022-11-03 02:21:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:14,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:14,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:21:14,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash -404487765, now seen corresponding path program 1 times [2022-11-03 02:21:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:14,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647269847] [2022-11-03 02:21:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:15,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:15,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647269847] [2022-11-03 02:21:15,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647269847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:15,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:15,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118222108] [2022-11-03 02:21:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:15,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:15,122 INFO L87 Difference]: Start difference. First operand 304 states and 379 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:16,332 INFO L93 Difference]: Finished difference Result 614 states and 770 transitions. [2022-11-03 02:21:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:16,336 INFO L225 Difference]: With dead ends: 614 [2022-11-03 02:21:16,336 INFO L226 Difference]: Without dead ends: 609 [2022-11-03 02:21:16,337 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:16,338 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 704 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:16,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 888 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:21:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-03 02:21:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-11-03 02:21:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2901023890784984) internal successors, (378), 303 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 378 transitions. [2022-11-03 02:21:16,430 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 378 transitions. Word has length 64 [2022-11-03 02:21:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:16,430 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 378 transitions. [2022-11-03 02:21:16,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 378 transitions. [2022-11-03 02:21:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:16,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:16,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:21:16,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash 334726124, now seen corresponding path program 1 times [2022-11-03 02:21:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:16,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089974420] [2022-11-03 02:21:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:16,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:16,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089974420] [2022-11-03 02:21:16,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089974420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:16,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:16,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097360142] [2022-11-03 02:21:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:16,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:16,772 INFO L87 Difference]: Start difference. First operand 304 states and 378 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:17,585 INFO L93 Difference]: Finished difference Result 520 states and 658 transitions. [2022-11-03 02:21:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:21:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:17,593 INFO L225 Difference]: With dead ends: 520 [2022-11-03 02:21:17,594 INFO L226 Difference]: Without dead ends: 384 [2022-11-03 02:21:17,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:21:17,596 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 634 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:17,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 746 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-03 02:21:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-11-03 02:21:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2832764505119454) internal successors, (376), 303 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 376 transitions. [2022-11-03 02:21:17,695 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 376 transitions. Word has length 64 [2022-11-03 02:21:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:17,695 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 376 transitions. [2022-11-03 02:21:17,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 376 transitions. [2022-11-03 02:21:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:17,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:17,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:21:17,698 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:17,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1265909968, now seen corresponding path program 1 times [2022-11-03 02:21:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:17,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597686280] [2022-11-03 02:21:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:18,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597686280] [2022-11-03 02:21:18,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597686280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:18,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:18,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:18,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409601330] [2022-11-03 02:21:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:18,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:18,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:18,041 INFO L87 Difference]: Start difference. First operand 304 states and 376 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:19,200 INFO L93 Difference]: Finished difference Result 614 states and 766 transitions. [2022-11-03 02:21:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:21:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:19,203 INFO L225 Difference]: With dead ends: 614 [2022-11-03 02:21:19,203 INFO L226 Difference]: Without dead ends: 609 [2022-11-03 02:21:19,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:21:19,205 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 890 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:19,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1141 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-03 02:21:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-11-03 02:21:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2764505119453924) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2022-11-03 02:21:19,299 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 64 [2022-11-03 02:21:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:19,299 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2022-11-03 02:21:19,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2022-11-03 02:21:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:21:19,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:19,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:19,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:21:19,302 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 646287134, now seen corresponding path program 1 times [2022-11-03 02:21:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:19,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514288893] [2022-11-03 02:21:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:19,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514288893] [2022-11-03 02:21:19,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514288893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:19,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:19,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820595513] [2022-11-03 02:21:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:19,563 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:20,635 INFO L93 Difference]: Finished difference Result 646 states and 812 transitions. [2022-11-03 02:21:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:20,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:21:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:20,639 INFO L225 Difference]: With dead ends: 646 [2022-11-03 02:21:20,639 INFO L226 Difference]: Without dead ends: 629 [2022-11-03 02:21:20,640 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:20,640 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 662 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:20,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1091 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:21:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-11-03 02:21:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 304. [2022-11-03 02:21:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2696245733788396) internal successors, (372), 303 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2022-11-03 02:21:20,738 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 64 [2022-11-03 02:21:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:20,739 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2022-11-03 02:21:20,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2022-11-03 02:21:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:21:20,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:20,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:21:20,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash 107558087, now seen corresponding path program 1 times [2022-11-03 02:21:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:20,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647044755] [2022-11-03 02:21:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:22,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647044755] [2022-11-03 02:21:22,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647044755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:22,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:22,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-03 02:21:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656618055] [2022-11-03 02:21:22,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:21:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:21:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:21:22,633 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:27,048 INFO L93 Difference]: Finished difference Result 717 states and 870 transitions. [2022-11-03 02:21:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:21:27,049 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:27,052 INFO L225 Difference]: With dead ends: 717 [2022-11-03 02:21:27,052 INFO L226 Difference]: Without dead ends: 641 [2022-11-03 02:21:27,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2022-11-03 02:21:27,060 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1272 mSDsluCounter, 4941 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 5285 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:27,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 5285 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:21:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-11-03 02:21:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 315. [2022-11-03 02:21:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.269736842105263) internal successors, (386), 314 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 386 transitions. [2022-11-03 02:21:27,166 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 386 transitions. Word has length 66 [2022-11-03 02:21:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:27,166 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 386 transitions. [2022-11-03 02:21:27,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 386 transitions. [2022-11-03 02:21:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:21:27,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:27,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:27,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:21:27,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1672959061, now seen corresponding path program 1 times [2022-11-03 02:21:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:27,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650100197] [2022-11-03 02:21:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:27,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650100197] [2022-11-03 02:21:27,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650100197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:27,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:27,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:21:27,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021468487] [2022-11-03 02:21:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:27,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:21:27,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:27,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:21:27,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:21:27,831 INFO L87 Difference]: Start difference. First operand 315 states and 386 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:28,837 INFO L93 Difference]: Finished difference Result 631 states and 765 transitions. [2022-11-03 02:21:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:21:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:28,840 INFO L225 Difference]: With dead ends: 631 [2022-11-03 02:21:28,841 INFO L226 Difference]: Without dead ends: 485 [2022-11-03 02:21:28,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:21:28,842 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1269 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:28,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1036 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-03 02:21:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 241. [2022-11-03 02:21:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 234 states have (on average 1.2606837606837606) internal successors, (295), 240 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 295 transitions. [2022-11-03 02:21:28,981 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 295 transitions. Word has length 66 [2022-11-03 02:21:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:28,981 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 295 transitions. [2022-11-03 02:21:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 295 transitions. [2022-11-03 02:21:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:21:28,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:28,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:21:28,984 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash 89242274, now seen corresponding path program 1 times [2022-11-03 02:21:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163889526] [2022-11-03 02:21:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:28,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:29,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:29,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163889526] [2022-11-03 02:21:29,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163889526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:29,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:29,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:21:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229815678] [2022-11-03 02:21:29,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:29,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:21:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:21:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:29,677 INFO L87 Difference]: Start difference. First operand 241 states and 295 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:31,109 INFO L93 Difference]: Finished difference Result 644 states and 795 transitions. [2022-11-03 02:21:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:31,109 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:31,112 INFO L225 Difference]: With dead ends: 644 [2022-11-03 02:21:31,112 INFO L226 Difference]: Without dead ends: 566 [2022-11-03 02:21:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:21:31,114 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1207 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1329 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:21:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-03 02:21:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 231. [2022-11-03 02:21:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 230 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 280 transitions. [2022-11-03 02:21:31,206 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 280 transitions. Word has length 66 [2022-11-03 02:21:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:31,207 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 280 transitions. [2022-11-03 02:21:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 280 transitions. [2022-11-03 02:21:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:21:31,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:31,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:31,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:21:31,209 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1372728877, now seen corresponding path program 1 times [2022-11-03 02:21:31,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:31,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743970352] [2022-11-03 02:21:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:31,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:31,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:31,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743970352] [2022-11-03 02:21:31,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743970352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:31,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:31,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:21:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492743555] [2022-11-03 02:21:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:31,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:21:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:21:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:31,900 INFO L87 Difference]: Start difference. First operand 231 states and 280 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:32,842 INFO L93 Difference]: Finished difference Result 503 states and 636 transitions. [2022-11-03 02:21:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:32,842 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:32,844 INFO L225 Difference]: With dead ends: 503 [2022-11-03 02:21:32,845 INFO L226 Difference]: Without dead ends: 389 [2022-11-03 02:21:32,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:21:32,846 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 624 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:32,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1471 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-03 02:21:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 189. [2022-11-03 02:21:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2258064516129032) internal successors, (228), 188 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2022-11-03 02:21:32,963 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 66 [2022-11-03 02:21:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:32,963 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2022-11-03 02:21:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2022-11-03 02:21:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:21:32,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:32,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:21:32,966 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -812946096, now seen corresponding path program 1 times [2022-11-03 02:21:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:32,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189214721] [2022-11-03 02:21:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:33,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:33,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189214721] [2022-11-03 02:21:33,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189214721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:33,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:33,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68701714] [2022-11-03 02:21:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:33,271 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:33,933 INFO L93 Difference]: Finished difference Result 304 states and 371 transitions. [2022-11-03 02:21:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:21:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-03 02:21:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:33,935 INFO L225 Difference]: With dead ends: 304 [2022-11-03 02:21:33,936 INFO L226 Difference]: Without dead ends: 297 [2022-11-03 02:21:33,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:21:33,937 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 439 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:33,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 486 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-03 02:21:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 189. [2022-11-03 02:21:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 188 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2022-11-03 02:21:34,071 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 67 [2022-11-03 02:21:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:34,071 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2022-11-03 02:21:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2022-11-03 02:21:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:21:34,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:34,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:21:34,073 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1116116258, now seen corresponding path program 1 times [2022-11-03 02:21:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930099973] [2022-11-03 02:21:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:34,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:34,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930099973] [2022-11-03 02:21:34,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930099973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:34,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:34,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052190618] [2022-11-03 02:21:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:34,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:34,311 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:35,035 INFO L93 Difference]: Finished difference Result 423 states and 525 transitions. [2022-11-03 02:21:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:21:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-03 02:21:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:35,060 INFO L225 Difference]: With dead ends: 423 [2022-11-03 02:21:35,060 INFO L226 Difference]: Without dead ends: 321 [2022-11-03 02:21:35,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:21:35,061 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 522 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:35,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 444 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:21:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-03 02:21:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 189. [2022-11-03 02:21:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 188 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2022-11-03 02:21:35,198 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 67 [2022-11-03 02:21:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:35,199 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2022-11-03 02:21:35,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2022-11-03 02:21:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:21:35,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:35,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 02:21:35,201 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1523699975, now seen corresponding path program 1 times [2022-11-03 02:21:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:35,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922153295] [2022-11-03 02:21:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:36,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:36,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922153295] [2022-11-03 02:21:36,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922153295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:36,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:36,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 02:21:36,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529261886] [2022-11-03 02:21:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:36,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:21:36,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:21:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:21:36,564 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:40,160 INFO L93 Difference]: Finished difference Result 830 states and 1053 transitions. [2022-11-03 02:21:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:21:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-03 02:21:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:40,164 INFO L225 Difference]: With dead ends: 830 [2022-11-03 02:21:40,164 INFO L226 Difference]: Without dead ends: 824 [2022-11-03 02:21:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:21:40,166 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1052 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 3058 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:21:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-11-03 02:21:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 195. [2022-11-03 02:21:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.2135416666666667) internal successors, (233), 194 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions. [2022-11-03 02:21:40,295 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 69 [2022-11-03 02:21:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:40,295 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions. [2022-11-03 02:21:40,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions. [2022-11-03 02:21:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:21:40,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:40,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:40,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 02:21:40,297 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1858906752, now seen corresponding path program 1 times [2022-11-03 02:21:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:40,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202058638] [2022-11-03 02:21:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:40,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:41,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:41,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202058638] [2022-11-03 02:21:41,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202058638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:41,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:41,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 02:21:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075522634] [2022-11-03 02:21:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:21:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:21:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:21:41,843 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:44,368 INFO L93 Difference]: Finished difference Result 325 states and 390 transitions. [2022-11-03 02:21:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:21:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-03 02:21:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:44,371 INFO L225 Difference]: With dead ends: 325 [2022-11-03 02:21:44,372 INFO L226 Difference]: Without dead ends: 317 [2022-11-03 02:21:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:21:44,375 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 426 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:44,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2210 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:21:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-03 02:21:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 204. [2022-11-03 02:21:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 1.2139303482587065) internal successors, (244), 203 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2022-11-03 02:21:44,514 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 69 [2022-11-03 02:21:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:44,514 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2022-11-03 02:21:44,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2022-11-03 02:21:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:21:44,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:44,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:44,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 02:21:44,515 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -327269785, now seen corresponding path program 1 times [2022-11-03 02:21:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:44,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028914233] [2022-11-03 02:21:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:45,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:45,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028914233] [2022-11-03 02:21:45,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028914233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:45,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:45,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:21:45,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849944831] [2022-11-03 02:21:45,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:45,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:21:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:21:45,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:45,228 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:47,432 INFO L93 Difference]: Finished difference Result 788 states and 998 transitions. [2022-11-03 02:21:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:21:47,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:21:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:47,435 INFO L225 Difference]: With dead ends: 788 [2022-11-03 02:21:47,435 INFO L226 Difference]: Without dead ends: 782 [2022-11-03 02:21:47,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:21:47,437 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 873 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:47,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2096 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-03 02:21:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 192. [2022-11-03 02:21:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.2052631578947368) internal successors, (229), 191 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 229 transitions. [2022-11-03 02:21:47,552 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 229 transitions. Word has length 70 [2022-11-03 02:21:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:47,553 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 229 transitions. [2022-11-03 02:21:47,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 229 transitions. [2022-11-03 02:21:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:21:47,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:47,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 02:21:47,554 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 7936992, now seen corresponding path program 1 times [2022-11-03 02:21:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:47,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219128699] [2022-11-03 02:21:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:48,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:48,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219128699] [2022-11-03 02:21:48,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219128699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:48,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:48,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:21:48,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531468294] [2022-11-03 02:21:48,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:48,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:21:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:21:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:48,225 INFO L87 Difference]: Start difference. First operand 192 states and 229 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:50,008 INFO L93 Difference]: Finished difference Result 636 states and 807 transitions. [2022-11-03 02:21:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 02:21:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:21:50,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:50,011 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:21:50,011 INFO L226 Difference]: Without dead ends: 621 [2022-11-03 02:21:50,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:21:50,012 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 621 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:50,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 2514 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:21:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-03 02:21:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 171. [2022-11-03 02:21:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2) internal successors, (204), 170 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2022-11-03 02:21:50,154 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 70 [2022-11-03 02:21:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:50,154 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2022-11-03 02:21:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2022-11-03 02:21:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:21:50,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:50,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 02:21:50,156 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash -646385871, now seen corresponding path program 1 times [2022-11-03 02:21:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47792522] [2022-11-03 02:21:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:50,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:50,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47792522] [2022-11-03 02:21:50,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47792522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:50,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:50,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537309619] [2022-11-03 02:21:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:50,293 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:50,580 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2022-11-03 02:21:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-03 02:21:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:50,582 INFO L225 Difference]: With dead ends: 252 [2022-11-03 02:21:50,582 INFO L226 Difference]: Without dead ends: 215 [2022-11-03 02:21:50,582 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:50,583 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 54 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:50,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-03 02:21:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2022-11-03 02:21:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 204 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 248 transitions. [2022-11-03 02:21:50,833 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 248 transitions. Word has length 84 [2022-11-03 02:21:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:50,834 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 248 transitions. [2022-11-03 02:21:50,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 248 transitions. [2022-11-03 02:21:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:21:50,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:50,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 02:21:50,836 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1526245917, now seen corresponding path program 1 times [2022-11-03 02:21:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:50,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539832667] [2022-11-03 02:21:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:50,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539832667] [2022-11-03 02:21:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539832667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:50,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:50,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430279945] [2022-11-03 02:21:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:50,974 INFO L87 Difference]: Start difference. First operand 205 states and 248 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:51,433 INFO L93 Difference]: Finished difference Result 411 states and 522 transitions. [2022-11-03 02:21:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-03 02:21:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:51,435 INFO L225 Difference]: With dead ends: 411 [2022-11-03 02:21:51,435 INFO L226 Difference]: Without dead ends: 308 [2022-11-03 02:21:51,442 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:51,443 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:51,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-03 02:21:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 294. [2022-11-03 02:21:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.2491467576791808) internal successors, (366), 293 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) [2022-11-03 02:21:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 366 transitions. [2022-11-03 02:21:51,896 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 366 transitions. Word has length 87 [2022-11-03 02:21:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:51,897 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 366 transitions. [2022-11-03 02:21:51,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 366 transitions. [2022-11-03 02:21:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:21:51,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:51,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 02:21:51,899 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 445440857, now seen corresponding path program 1 times [2022-11-03 02:21:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491099930] [2022-11-03 02:21:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:52,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491099930] [2022-11-03 02:21:52,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491099930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:52,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:52,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:52,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633238045] [2022-11-03 02:21:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:52,031 INFO L87 Difference]: Start difference. First operand 294 states and 366 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:52,805 INFO L93 Difference]: Finished difference Result 678 states and 876 transitions. [2022-11-03 02:21:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-03 02:21:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:52,808 INFO L225 Difference]: With dead ends: 678 [2022-11-03 02:21:52,808 INFO L226 Difference]: Without dead ends: 486 [2022-11-03 02:21:52,809 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:52,810 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 40 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:52,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 243 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-03 02:21:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 460. [2022-11-03 02:21:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2723311546840959) internal successors, (584), 459 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 584 transitions. [2022-11-03 02:21:53,276 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 584 transitions. Word has length 90 [2022-11-03 02:21:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:53,277 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 584 transitions. [2022-11-03 02:21:53,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 584 transitions. [2022-11-03 02:21:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:21:53,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:53,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 02:21:53,278 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1365580448, now seen corresponding path program 1 times [2022-11-03 02:21:53,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:53,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037492569] [2022-11-03 02:21:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:53,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:53,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037492569] [2022-11-03 02:21:53,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037492569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:53,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:53,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936809360] [2022-11-03 02:21:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:53,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:53,410 INFO L87 Difference]: Start difference. First operand 460 states and 584 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:54,836 INFO L93 Difference]: Finished difference Result 1176 states and 1530 transitions. [2022-11-03 02:21:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:54,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-03 02:21:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:54,842 INFO L225 Difference]: With dead ends: 1176 [2022-11-03 02:21:54,842 INFO L226 Difference]: Without dead ends: 818 [2022-11-03 02:21:54,842 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:54,843 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 30 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 243 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:21:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-03 02:21:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 768. [2022-11-03 02:21:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.2829204693611473) internal successors, (984), 767 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 984 transitions. [2022-11-03 02:21:55,899 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 984 transitions. Word has length 93 [2022-11-03 02:21:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:55,900 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 984 transitions. [2022-11-03 02:21:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 984 transitions. [2022-11-03 02:21:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:21:55,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:55,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 02:21:55,901 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:21:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash 795640899, now seen corresponding path program 1 times [2022-11-03 02:21:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:55,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509426201] [2022-11-03 02:21:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:56,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:56,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509426201] [2022-11-03 02:21:56,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509426201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:56,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:56,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551191916] [2022-11-03 02:21:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:21:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:21:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:21:56,054 INFO L87 Difference]: Start difference. First operand 768 states and 984 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:59,336 INFO L93 Difference]: Finished difference Result 2946 states and 3826 transitions. [2022-11-03 02:21:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:21:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-03 02:21:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:59,342 INFO L225 Difference]: With dead ends: 2946 [2022-11-03 02:21:59,342 INFO L226 Difference]: Without dead ends: 2280 [2022-11-03 02:21:59,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:59,344 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 529 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:59,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 781 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-03 02:22:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1146. [2022-11-03 02:22:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.273362445414847) internal successors, (1458), 1145 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1458 transitions. [2022-11-03 02:22:01,219 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1458 transitions. Word has length 96 [2022-11-03 02:22:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:01,219 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1458 transitions. [2022-11-03 02:22:01,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1458 transitions. [2022-11-03 02:22:01,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 02:22:01,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:01,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:01,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 02:22:01,221 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1184955644, now seen corresponding path program 1 times [2022-11-03 02:22:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:01,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547382533] [2022-11-03 02:22:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:01,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:01,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547382533] [2022-11-03 02:22:01,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547382533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:01,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:01,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:22:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334163276] [2022-11-03 02:22:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:01,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:22:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:22:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:22:01,496 INFO L87 Difference]: Start difference. First operand 1146 states and 1458 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:03,256 INFO L93 Difference]: Finished difference Result 2192 states and 2806 transitions. [2022-11-03 02:22:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:22:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-03 02:22:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:03,260 INFO L225 Difference]: With dead ends: 2192 [2022-11-03 02:22:03,260 INFO L226 Difference]: Without dead ends: 1148 [2022-11-03 02:22:03,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:03,262 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 333 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:03,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 251 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-11-03 02:22:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1146. [2022-11-03 02:22:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.2716157205240175) internal successors, (1456), 1145 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1456 transitions. [2022-11-03 02:22:04,752 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1456 transitions. Word has length 98 [2022-11-03 02:22:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:04,753 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1456 transitions. [2022-11-03 02:22:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1456 transitions. [2022-11-03 02:22:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 02:22:04,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:04,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 02:22:04,755 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -776759362, now seen corresponding path program 1 times [2022-11-03 02:22:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:04,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629378355] [2022-11-03 02:22:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:04,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:04,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629378355] [2022-11-03 02:22:04,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629378355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:04,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:22:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534726567] [2022-11-03 02:22:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:04,835 INFO L87 Difference]: Start difference. First operand 1146 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:06,658 INFO L93 Difference]: Finished difference Result 2456 states and 3146 transitions. [2022-11-03 02:22:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-03 02:22:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:06,661 INFO L225 Difference]: With dead ends: 2456 [2022-11-03 02:22:06,662 INFO L226 Difference]: Without dead ends: 1412 [2022-11-03 02:22:06,663 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:22:06,663 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:06,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 187 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:22:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-11-03 02:22:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1410. [2022-11-03 02:22:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2647267565649396) internal successors, (1782), 1409 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1782 transitions. [2022-11-03 02:22:08,673 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1782 transitions. Word has length 98 [2022-11-03 02:22:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:08,674 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1782 transitions. [2022-11-03 02:22:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1782 transitions. [2022-11-03 02:22:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:22:08,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:08,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:08,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 02:22:08,676 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1255564868, now seen corresponding path program 1 times [2022-11-03 02:22:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:08,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166078883] [2022-11-03 02:22:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:08,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166078883] [2022-11-03 02:22:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166078883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:08,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:08,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:22:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868396676] [2022-11-03 02:22:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:08,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:22:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:22:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:22:08,988 INFO L87 Difference]: Start difference. First operand 1410 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:12,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:12,388 INFO L93 Difference]: Finished difference Result 1901 states and 2376 transitions. [2022-11-03 02:22:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:22:12,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-11-03 02:22:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:12,397 INFO L225 Difference]: With dead ends: 1901 [2022-11-03 02:22:12,397 INFO L226 Difference]: Without dead ends: 1899 [2022-11-03 02:22:12,398 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:22:12,398 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 272 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:12,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 773 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:22:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-03 02:22:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1410. [2022-11-03 02:22:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2476933995741661) internal successors, (1758), 1409 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1758 transitions. [2022-11-03 02:22:14,549 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1758 transitions. Word has length 99 [2022-11-03 02:22:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:14,549 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1758 transitions. [2022-11-03 02:22:14,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1758 transitions. [2022-11-03 02:22:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:22:14,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:14,551 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:22:14,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 02:22:14,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2133397746, now seen corresponding path program 1 times [2022-11-03 02:22:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733969267] [2022-11-03 02:22:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:14,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:22:15,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:15,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733969267] [2022-11-03 02:22:15,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733969267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:15,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:15,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-03 02:22:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183824054] [2022-11-03 02:22:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:22:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:22:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:22:15,764 INFO L87 Difference]: Start difference. First operand 1410 states and 1758 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 19 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) [2022-11-03 02:22:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:22,148 INFO L93 Difference]: Finished difference Result 4142 states and 5179 transitions. [2022-11-03 02:22:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:22:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 19 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 115 [2022-11-03 02:22:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:22,156 INFO L225 Difference]: With dead ends: 4142 [2022-11-03 02:22:22,156 INFO L226 Difference]: Without dead ends: 2825 [2022-11-03 02:22:22,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=415, Invalid=1841, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 02:22:22,159 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 540 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:22,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1363 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:22:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-11-03 02:22:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1419. [2022-11-03 02:22:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.2468265162200283) internal successors, (1768), 1418 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1768 transitions. [2022-11-03 02:22:23,984 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1768 transitions. Word has length 115 [2022-11-03 02:22:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:23,984 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 1768 transitions. [2022-11-03 02:22:23,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 19 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) [2022-11-03 02:22:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1768 transitions. [2022-11-03 02:22:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:22:23,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:23,986 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:22:23,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 02:22:23,986 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash -58320302, now seen corresponding path program 1 times [2022-11-03 02:22:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:23,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161731980] [2022-11-03 02:22:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:22:24,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161731980] [2022-11-03 02:22:24,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161731980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:24,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:24,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:22:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404971117] [2022-11-03 02:22:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:22:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:22:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:24,249 INFO L87 Difference]: Start difference. First operand 1419 states and 1768 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:27,433 INFO L93 Difference]: Finished difference Result 3546 states and 4434 transitions. [2022-11-03 02:22:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:22:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-11-03 02:22:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:27,440 INFO L225 Difference]: With dead ends: 3546 [2022-11-03 02:22:27,440 INFO L226 Difference]: Without dead ends: 2223 [2022-11-03 02:22:27,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:22:27,443 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 314 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:27,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 339 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:22:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-03 02:22:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 1410. [2022-11-03 02:22:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2462739531582683) internal successors, (1756), 1409 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1756 transitions. [2022-11-03 02:22:29,351 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1756 transitions. Word has length 116 [2022-11-03 02:22:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:29,351 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1756 transitions. [2022-11-03 02:22:29,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1756 transitions. [2022-11-03 02:22:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 02:22:29,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:29,353 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:22:29,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 02:22:29,353 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -250941641, now seen corresponding path program 1 times [2022-11-03 02:22:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:29,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48069986] [2022-11-03 02:22:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:22:31,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:31,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48069986] [2022-11-03 02:22:31,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48069986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:31,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:31,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-03 02:22:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626804489] [2022-11-03 02:22:31,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:31,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:22:31,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:31,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:22:31,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:22:31,214 INFO L87 Difference]: Start difference. First operand 1410 states and 1756 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:35,739 INFO L93 Difference]: Finished difference Result 3473 states and 4353 transitions. [2022-11-03 02:22:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:22:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-11-03 02:22:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:35,747 INFO L225 Difference]: With dead ends: 3473 [2022-11-03 02:22:35,747 INFO L226 Difference]: Without dead ends: 2155 [2022-11-03 02:22:35,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:22:35,750 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 414 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:35,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1776 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:22:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2022-11-03 02:22:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1420. [2022-11-03 02:22:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.245243128964059) internal successors, (1767), 1419 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1767 transitions. [2022-11-03 02:22:37,427 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1767 transitions. Word has length 117 [2022-11-03 02:22:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:37,427 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1767 transitions. [2022-11-03 02:22:37,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1767 transitions. [2022-11-03 02:22:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:22:37,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:37,428 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:22:37,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 02:22:37,429 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-03 02:22:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1958010729, now seen corresponding path program 1 times [2022-11-03 02:22:37,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:37,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252758234] [2022-11-03 02:22:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:42,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252758234] [2022-11-03 02:22:42,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252758234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365639504] [2022-11-03 02:22:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:42,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:42,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:42,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f634b108-2422-4afe-9b4e-41ac0271df83/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:22:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:42,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-03 02:22:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:23:04,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:30,984 WARN L234 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 440 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)