./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:33:27,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:33:27,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:33:28,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:33:28,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:33:28,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:33:28,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:33:28,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:33:28,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:33:28,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:33:28,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:33:28,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:33:28,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:33:28,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:33:28,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:33:28,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:33:28,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:33:28,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:33:28,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:33:28,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:33:28,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:33:28,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:33:28,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:33:28,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:33:28,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:33:28,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:33:28,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:33:28,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:33:28,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:33:28,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:33:28,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:33:28,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:33:28,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:33:28,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:33:28,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:33:28,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:33:28,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:33:28,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:33:28,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:33:28,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:33:28,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:33:28,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:33:28,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:33:28,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:33:28,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:33:28,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:33:28,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:33:28,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:33:28,084 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:33:28,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:33:28,084 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:33:28,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:33:28,085 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:33:28,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:33:28,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:33:28,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:33:28,086 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:33:28,086 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:33:28,087 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:33:28,087 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:33:28,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:33:28,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:33:28,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:33:28,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:33:28,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:33:28,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:33:28,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:33:28,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:33:28,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:33:28,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:33:28,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:33:28,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:33:28,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:33:28,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:33:28,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:33:28,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:33:28,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:33:28,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:33:28,093 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:33:28,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:33:28,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:33:28,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:33:28,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:33:28,095 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ab77284c41e8949aa8a67882902909eedb25047f32a3303bcd08767adce507 [2021-11-25 18:33:28,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:33:28,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:33:28,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:33:28,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:33:28,410 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:33:28,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:33:28,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/data/c9739a583/de235394c68a476f8a790eb962f9bd7f/FLAGc90995091 [2021-11-25 18:33:29,347 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:33:29,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:33:29,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/data/c9739a583/de235394c68a476f8a790eb962f9bd7f/FLAGc90995091 [2021-11-25 18:33:29,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/data/c9739a583/de235394c68a476f8a790eb962f9bd7f [2021-11-25 18:33:29,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:33:29,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:33:29,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:33:29,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:33:29,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:33:29,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:33:29" (1/1) ... [2021-11-25 18:33:29,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3140bae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:29, skipping insertion in model container [2021-11-25 18:33:29,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:33:29" (1/1) ... [2021-11-25 18:33:29,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:33:30,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:33:30,964 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2021-11-25 18:33:31,016 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2021-11-25 18:33:31,102 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2021-11-25 18:33:31,130 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2021-11-25 18:33:31,151 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2021-11-25 18:33:31,215 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2021-11-25 18:33:31,253 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2021-11-25 18:33:31,275 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2021-11-25 18:33:31,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2021-11-25 18:33:31,376 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2021-11-25 18:33:31,398 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2021-11-25 18:33:31,415 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2021-11-25 18:33:31,473 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2021-11-25 18:33:31,542 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2021-11-25 18:33:31,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2021-11-25 18:33:31,694 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2021-11-25 18:33:31,768 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2021-11-25 18:33:32,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:33:32,036 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:33:32,163 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2021-11-25 18:33:32,190 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2021-11-25 18:33:32,315 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2021-11-25 18:33:32,340 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2021-11-25 18:33:32,355 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2021-11-25 18:33:32,382 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2021-11-25 18:33:32,403 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2021-11-25 18:33:32,433 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2021-11-25 18:33:32,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2021-11-25 18:33:32,529 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2021-11-25 18:33:32,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2021-11-25 18:33:32,564 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2021-11-25 18:33:32,614 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2021-11-25 18:33:32,672 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2021-11-25 18:33:32,727 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2021-11-25 18:33:32,804 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2021-11-25 18:33:32,866 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_8b193168-5b62-4099-b60d-8a8febe3d436/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2021-11-25 18:33:33,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:33:33,125 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:33:33,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33 WrapperNode [2021-11-25 18:33:33,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:33:33,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:33:33,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:33:33,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:33:33,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,490 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16771 [2021-11-25 18:33:33,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:33:33,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:33:33,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:33:33,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:33:33,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:33:33,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:33:33,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:33:33,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:33:33,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (1/1) ... [2021-11-25 18:33:33,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:33:33,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:33,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:33:34,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b193168-5b62-4099-b60d-8a8febe3d436/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:33:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:33:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:33:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:33:34,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:33:34,643 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:33:34,644 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:33:41,084 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:33:42,586 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:33:42,586 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:33:42,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:33:42 BoogieIcfgContainer [2021-11-25 18:33:42,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:33:42,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:33:42,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:33:42,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:33:42,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:33:29" (1/3) ... [2021-11-25 18:33:42,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be6d84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:33:42, skipping insertion in model container [2021-11-25 18:33:42,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:33:33" (2/3) ... [2021-11-25 18:33:42,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be6d84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:33:42, skipping insertion in model container [2021-11-25 18:33:42,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:33:42" (3/3) ... [2021-11-25 18:33:42,601 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-25 18:33:42,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:33:42,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-25 18:33:42,664 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:33:42,671 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:33:42,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-25 18:33:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 18:33:42,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:42,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:42,773 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:33:42,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2021-11-25 18:33:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782449965] [2021-11-25 18:33:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:42,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:43,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782449965] [2021-11-25 18:33:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782449965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:43,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:43,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:33:43,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350174533] [2021-11-25 18:33:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:43,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:33:43,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:33:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:33:43,408 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 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 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:46,876 INFO L93 Difference]: Finished difference Result 5637 states and 10090 transitions. [2021-11-25 18:33:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:33:46,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 18:33:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:46,918 INFO L225 Difference]: With dead ends: 5637 [2021-11-25 18:33:46,918 INFO L226 Difference]: Without dead ends: 3311 [2021-11-25 18:33:46,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:33:46,936 INFO L933 BasicCegarLoop]: 2567 mSDtfsCounter, 16121 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16121 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:46,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16121 Valid, 3202 Invalid, 2855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 18:33:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-25 18:33:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3291. [2021-11-25 18:33:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3274 states have (on average 1.3194868662186927) internal successors, (4320), 3290 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4320 transitions. [2021-11-25 18:33:47,157 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4320 transitions. Word has length 63 [2021-11-25 18:33:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:47,158 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 4320 transitions. [2021-11-25 18:33:47,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4320 transitions. [2021-11-25 18:33:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 18:33:47,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:47,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:47,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:33:47,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:33:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1509750167, now seen corresponding path program 1 times [2021-11-25 18:33:47,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:47,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662256491] [2021-11-25 18:33:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:47,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:47,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:47,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662256491] [2021-11-25 18:33:47,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662256491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:47,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:47,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:33:47,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123481843] [2021-11-25 18:33:47,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:47,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:33:47,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:33:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:33:47,314 INFO L87 Difference]: Start difference. First operand 3291 states and 4320 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:50,181 INFO L93 Difference]: Finished difference Result 6332 states and 8314 transitions. [2021-11-25 18:33:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:33:50,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 18:33:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:50,208 INFO L225 Difference]: With dead ends: 6332 [2021-11-25 18:33:50,208 INFO L226 Difference]: Without dead ends: 4332 [2021-11-25 18:33:50,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:33:50,214 INFO L933 BasicCegarLoop]: 1249 mSDtfsCounter, 11111 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11111 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:50,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11111 Valid, 1871 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:33:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-11-25 18:33:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4308. [2021-11-25 18:33:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4291 states have (on average 1.3146119785597763) internal successors, (5641), 4307 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5641 transitions. [2021-11-25 18:33:50,399 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5641 transitions. Word has length 63 [2021-11-25 18:33:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:50,399 INFO L470 AbstractCegarLoop]: Abstraction has 4308 states and 5641 transitions. [2021-11-25 18:33:50,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5641 transitions. [2021-11-25 18:33:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 18:33:50,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:50,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:50,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:33:50,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:33:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2021-11-25 18:33:50,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199948846] [2021-11-25 18:33:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:50,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:50,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:50,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199948846] [2021-11-25 18:33:50,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199948846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:50,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:50,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:33:50,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104448516] [2021-11-25 18:33:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:50,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:33:50,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:33:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:33:50,532 INFO L87 Difference]: Start difference. First operand 4308 states and 5641 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-25 18:33:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:52,871 INFO L93 Difference]: Finished difference Result 8650 states and 11301 transitions. [2021-11-25 18:33:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:33:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2021-11-25 18:33:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:52,905 INFO L225 Difference]: With dead ends: 8650 [2021-11-25 18:33:52,905 INFO L226 Difference]: Without dead ends: 5867 [2021-11-25 18:33:52,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:33:52,916 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 9638 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9638 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:52,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9638 Valid, 1727 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:33:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5867 states. [2021-11-25 18:33:53,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5867 to 5840. [2021-11-25 18:33:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5840 states, 5823 states have (on average 1.3123819337111455) internal successors, (7642), 5839 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7642 transitions. [2021-11-25 18:33:53,206 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7642 transitions. Word has length 64 [2021-11-25 18:33:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 5840 states and 7642 transitions. [2021-11-25 18:33:53,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2021-11-25 18:33:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7642 transitions. [2021-11-25 18:33:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:33:53,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:53,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:53,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:33:53,217 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:33:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2021-11-25 18:33:53,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:53,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742259081] [2021-11-25 18:33:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:53,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:53,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:53,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742259081] [2021-11-25 18:33:53,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742259081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:53,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:53,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:33:53,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840565482] [2021-11-25 18:33:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:53,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:33:53,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:33:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:33:53,319 INFO L87 Difference]: Start difference. First operand 5840 states and 7642 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:55,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:55,350 INFO L93 Difference]: Finished difference Result 11150 states and 14652 transitions. [2021-11-25 18:33:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:33:55,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 18:33:55,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:55,393 INFO L225 Difference]: With dead ends: 11150 [2021-11-25 18:33:55,393 INFO L226 Difference]: Without dead ends: 7338 [2021-11-25 18:33:55,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:33:55,405 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 8101 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:55,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8101 Valid, 1483 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:33:55,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2021-11-25 18:33:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7303. [2021-11-25 18:33:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7286 states have (on average 1.3192423826516608) internal successors, (9612), 7302 states have internal predecessors, (9612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9612 transitions. [2021-11-25 18:33:55,951 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9612 transitions. Word has length 65 [2021-11-25 18:33:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 9612 transitions. [2021-11-25 18:33:55,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9612 transitions. [2021-11-25 18:33:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:33:55,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:55,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:55,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:33:55,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:33:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2021-11-25 18:33:55,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:55,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051319165] [2021-11-25 18:33:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:55,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:56,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051319165] [2021-11-25 18:33:56,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051319165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:56,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:56,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:33:56,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966146939] [2021-11-25 18:33:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:56,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:33:56,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:33:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:33:56,248 INFO L87 Difference]: Start difference. First operand 7303 states and 9612 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:00,898 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2021-11-25 18:34:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:34:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 18:34:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:00,953 INFO L225 Difference]: With dead ends: 12557 [2021-11-25 18:34:00,953 INFO L226 Difference]: Without dead ends: 11630 [2021-11-25 18:34:00,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:34:00,960 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 9863 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 6430 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9863 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 6430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:00,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9863 Valid, 5128 Invalid, 6780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 6430 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:34:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2021-11-25 18:34:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7262. [2021-11-25 18:34:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7262 states, 7245 states have (on average 1.3189786059351276) internal successors, (9556), 7261 states have internal predecessors, (9556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 9556 transitions. [2021-11-25 18:34:01,417 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 9556 transitions. Word has length 65 [2021-11-25 18:34:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:01,418 INFO L470 AbstractCegarLoop]: Abstraction has 7262 states and 9556 transitions. [2021-11-25 18:34:01,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 9556 transitions. [2021-11-25 18:34:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:34:01,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:01,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:01,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:34:01,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2021-11-25 18:34:01,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:01,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175221237] [2021-11-25 18:34:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:01,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:01,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:01,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175221237] [2021-11-25 18:34:01,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175221237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:01,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:01,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:34:01,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311811593] [2021-11-25 18:34:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:01,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:34:01,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:34:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:34:01,609 INFO L87 Difference]: Start difference. First operand 7262 states and 9556 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:04,357 INFO L93 Difference]: Finished difference Result 10823 states and 14510 transitions. [2021-11-25 18:34:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:34:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 18:34:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:04,385 INFO L225 Difference]: With dead ends: 10823 [2021-11-25 18:34:04,385 INFO L226 Difference]: Without dead ends: 9806 [2021-11-25 18:34:04,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:34:04,391 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 8688 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8688 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:04,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8688 Valid, 3845 Invalid, 4322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:34:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9806 states. [2021-11-25 18:34:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9806 to 7135. [2021-11-25 18:34:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3189098061253162) internal successors, (9388), 7134 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9388 transitions. [2021-11-25 18:34:04,755 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9388 transitions. Word has length 65 [2021-11-25 18:34:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:04,755 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9388 transitions. [2021-11-25 18:34:04,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9388 transitions. [2021-11-25 18:34:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:34:04,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:04,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:04,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:34:04,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2021-11-25 18:34:04,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:04,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598653473] [2021-11-25 18:34:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:04,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:04,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:04,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598653473] [2021-11-25 18:34:04,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598653473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:04,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:04,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:34:04,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624438618] [2021-11-25 18:34:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:04,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:34:04,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:34:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:34:04,896 INFO L87 Difference]: Start difference. First operand 7135 states and 9388 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 18:34:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:08,142 INFO L93 Difference]: Finished difference Result 9809 states and 12929 transitions. [2021-11-25 18:34:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:34:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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 [2021-11-25 18:34:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:08,163 INFO L225 Difference]: With dead ends: 9809 [2021-11-25 18:34:08,164 INFO L226 Difference]: Without dead ends: 9801 [2021-11-25 18:34:08,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:34:08,168 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 8685 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8685 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:08,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8685 Valid, 4922 Invalid, 5888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:34:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2021-11-25 18:34:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7135. [2021-11-25 18:34:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3187693172239394) internal successors, (9387), 7134 states have internal predecessors, (9387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9387 transitions. [2021-11-25 18:34:08,715 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9387 transitions. Word has length 66 [2021-11-25 18:34:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:08,715 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9387 transitions. [2021-11-25 18:34:08,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 18:34:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9387 transitions. [2021-11-25 18:34:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:34:08,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:08,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:08,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:34:08,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2021-11-25 18:34:08,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:08,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947379932] [2021-11-25 18:34:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:08,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:08,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:08,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947379932] [2021-11-25 18:34:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947379932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:08,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:34:08,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073291092] [2021-11-25 18:34:08,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:34:08,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:34:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:34:08,881 INFO L87 Difference]: Start difference. First operand 7135 states and 9387 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 18:34:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:11,818 INFO L93 Difference]: Finished difference Result 8303 states and 10922 transitions. [2021-11-25 18:34:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:34:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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 [2021-11-25 18:34:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:11,836 INFO L225 Difference]: With dead ends: 8303 [2021-11-25 18:34:11,836 INFO L226 Difference]: Without dead ends: 8298 [2021-11-25 18:34:11,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:34:11,841 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 7016 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 4978 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7016 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:11,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7016 Valid, 4744 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4978 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:34:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-11-25 18:34:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 7135. [2021-11-25 18:34:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 7118 states have (on average 1.3186288283225625) internal successors, (9386), 7134 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9386 transitions. [2021-11-25 18:34:12,340 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9386 transitions. Word has length 66 [2021-11-25 18:34:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:12,340 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9386 transitions. [2021-11-25 18:34:12,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 18:34:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9386 transitions. [2021-11-25 18:34:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:34:12,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:12,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:12,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:34:12,349 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2021-11-25 18:34:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812735239] [2021-11-25 18:34:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:12,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:12,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812735239] [2021-11-25 18:34:12,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812735239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:12,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:12,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:34:12,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653088390] [2021-11-25 18:34:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:12,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:34:12,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:12,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:34:12,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:34:12,846 INFO L87 Difference]: Start difference. First operand 7135 states and 9386 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) [2021-11-25 18:34:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:15,414 INFO L93 Difference]: Finished difference Result 13443 states and 18278 transitions. [2021-11-25 18:34:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:34:15,414 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 [2021-11-25 18:34:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:15,441 INFO L225 Difference]: With dead ends: 13443 [2021-11-25 18:34:15,441 INFO L226 Difference]: Without dead ends: 12513 [2021-11-25 18:34:15,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:34:15,445 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 11908 mSDsluCounter, 5282 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11908 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:15,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11908 Valid, 7423 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:34:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2021-11-25 18:34:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 7087. [2021-11-25 18:34:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7087 states, 7071 states have (on average 1.3186253712346203) internal successors, (9324), 7086 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 9324 transitions. [2021-11-25 18:34:16,116 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 9324 transitions. Word has length 66 [2021-11-25 18:34:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:16,117 INFO L470 AbstractCegarLoop]: Abstraction has 7087 states and 9324 transitions. [2021-11-25 18:34:16,117 INFO L471 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) [2021-11-25 18:34:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 9324 transitions. [2021-11-25 18:34:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:34:16,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:16,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:16,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:34:16,126 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2021-11-25 18:34:16,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:16,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20744306] [2021-11-25 18:34:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:16,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:16,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20744306] [2021-11-25 18:34:16,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20744306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:16,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:16,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:34:16,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247934542] [2021-11-25 18:34:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:16,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:34:16,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:34:16,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:34:16,527 INFO L87 Difference]: Start difference. First operand 7087 states and 9324 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2021-11-25 18:34:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:19,534 INFO L93 Difference]: Finished difference Result 11298 states and 15279 transitions. [2021-11-25 18:34:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:34:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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 [2021-11-25 18:34:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:19,549 INFO L225 Difference]: With dead ends: 11298 [2021-11-25 18:34:19,550 INFO L226 Difference]: Without dead ends: 11294 [2021-11-25 18:34:19,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:34:19,555 INFO L933 BasicCegarLoop]: 2315 mSDtfsCounter, 13145 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13145 SdHoareTripleChecker+Valid, 12383 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:19,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13145 Valid, 12383 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:34:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2021-11-25 18:34:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 7083. [2021-11-25 18:34:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7068 states have (on average 1.3186191284663271) internal successors, (9320), 7082 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9320 transitions. [2021-11-25 18:34:20,287 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9320 transitions. Word has length 66 [2021-11-25 18:34:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:20,288 INFO L470 AbstractCegarLoop]: Abstraction has 7083 states and 9320 transitions. [2021-11-25 18:34:20,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 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) [2021-11-25 18:34:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9320 transitions. [2021-11-25 18:34:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:20,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:20,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:20,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:34:20,299 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2021-11-25 18:34:20,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797265081] [2021-11-25 18:34:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:20,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:20,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:20,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797265081] [2021-11-25 18:34:20,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797265081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:20,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:20,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:34:20,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551473517] [2021-11-25 18:34:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:20,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:34:20,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:34:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:34:20,605 INFO L87 Difference]: Start difference. First operand 7083 states and 9320 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2021-11-25 18:34:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:23,824 INFO L93 Difference]: Finished difference Result 13960 states and 19007 transitions. [2021-11-25 18:34:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:34:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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 [2021-11-25 18:34:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:23,837 INFO L225 Difference]: With dead ends: 13960 [2021-11-25 18:34:23,837 INFO L226 Difference]: Without dead ends: 12977 [2021-11-25 18:34:23,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:34:23,841 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 14069 mSDsluCounter, 6394 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14069 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:23,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14069 Valid, 8509 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:34:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12977 states. [2021-11-25 18:34:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12977 to 7051. [2021-11-25 18:34:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3190733371233656) internal successors, (9281), 7050 states have internal predecessors, (9281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9281 transitions. [2021-11-25 18:34:24,502 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9281 transitions. Word has length 67 [2021-11-25 18:34:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:24,502 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9281 transitions. [2021-11-25 18:34:24,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 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) [2021-11-25 18:34:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9281 transitions. [2021-11-25 18:34:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:24,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:24,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:24,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:34:24,511 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2021-11-25 18:34:24,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785940855] [2021-11-25 18:34:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:24,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:24,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:24,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785940855] [2021-11-25 18:34:24,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785940855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:24,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:24,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:34:24,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602028463] [2021-11-25 18:34:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:24,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:34:24,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:24,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:34:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:34:24,681 INFO L87 Difference]: Start difference. First operand 7051 states and 9281 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-25 18:34:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:28,100 INFO L93 Difference]: Finished difference Result 10861 states and 14568 transitions. [2021-11-25 18:34:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:34:28,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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 [2021-11-25 18:34:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:28,111 INFO L225 Difference]: With dead ends: 10861 [2021-11-25 18:34:28,111 INFO L226 Difference]: Without dead ends: 9700 [2021-11-25 18:34:28,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:34:28,115 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 8689 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8689 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:28,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8689 Valid, 3598 Invalid, 4082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:34:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9700 states. [2021-11-25 18:34:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9700 to 7051. [2021-11-25 18:34:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3189312109152929) internal successors, (9280), 7050 states have internal predecessors, (9280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9280 transitions. [2021-11-25 18:34:28,790 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9280 transitions. Word has length 67 [2021-11-25 18:34:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:28,790 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9280 transitions. [2021-11-25 18:34:28,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 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) [2021-11-25 18:34:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9280 transitions. [2021-11-25 18:34:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:28,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:28,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:28,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:34:28,800 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2021-11-25 18:34:28,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695499617] [2021-11-25 18:34:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:28,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:28,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:28,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695499617] [2021-11-25 18:34:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695499617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:28,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:28,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:34:28,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219071817] [2021-11-25 18:34:28,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:34:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:34:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:34:28,933 INFO L87 Difference]: Start difference. First operand 7051 states and 9280 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) [2021-11-25 18:34:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:33,864 INFO L93 Difference]: Finished difference Result 12000 states and 16091 transitions. [2021-11-25 18:34:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:34:33,864 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 [2021-11-25 18:34:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:33,875 INFO L225 Difference]: With dead ends: 12000 [2021-11-25 18:34:33,876 INFO L226 Difference]: Without dead ends: 11103 [2021-11-25 18:34:33,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:34:33,880 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 7113 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7113 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 6905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:33,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7113 Valid, 5926 Invalid, 6905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:34:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-25 18:34:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 7051. [2021-11-25 18:34:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3187890847072201) internal successors, (9279), 7050 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9279 transitions. [2021-11-25 18:34:34,632 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9279 transitions. Word has length 67 [2021-11-25 18:34:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:34,633 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9279 transitions. [2021-11-25 18:34:34,633 INFO L471 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) [2021-11-25 18:34:34,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9279 transitions. [2021-11-25 18:34:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:34,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:34,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:34,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:34:34,640 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2021-11-25 18:34:34,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455463267] [2021-11-25 18:34:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:34,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:34,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455463267] [2021-11-25 18:34:34,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455463267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:34,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:34,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:34:34,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793961381] [2021-11-25 18:34:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:34,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:34:34,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:34:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:34:34,811 INFO L87 Difference]: Start difference. First operand 7051 states and 9279 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) [2021-11-25 18:34:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:39,801 INFO L93 Difference]: Finished difference Result 12342 states and 16450 transitions. [2021-11-25 18:34:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:34:39,802 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 [2021-11-25 18:34:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:39,813 INFO L225 Difference]: With dead ends: 12342 [2021-11-25 18:34:39,813 INFO L226 Difference]: Without dead ends: 11403 [2021-11-25 18:34:39,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:34:39,816 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 9230 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 6360 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9230 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 6687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 6360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:39,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9230 Valid, 5219 Invalid, 6687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 6360 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:34:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11403 states. [2021-11-25 18:34:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 7051. [2021-11-25 18:34:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7036 states have (on average 1.3186469584991471) internal successors, (9278), 7050 states have internal predecessors, (9278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 9278 transitions. [2021-11-25 18:34:40,489 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 9278 transitions. Word has length 67 [2021-11-25 18:34:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 9278 transitions. [2021-11-25 18:34:40,489 INFO L471 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) [2021-11-25 18:34:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 9278 transitions. [2021-11-25 18:34:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:40,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:40,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:40,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:34:40,496 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2021-11-25 18:34:40,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:40,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057906253] [2021-11-25 18:34:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:40,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:40,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057906253] [2021-11-25 18:34:40,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057906253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:40,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:40,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:34:40,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296848301] [2021-11-25 18:34:40,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:40,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:34:40,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:34:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:34:40,854 INFO L87 Difference]: Start difference. First operand 7051 states and 9278 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 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) [2021-11-25 18:34:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:47,235 INFO L93 Difference]: Finished difference Result 17646 states and 24196 transitions. [2021-11-25 18:34:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:34:47,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 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 [2021-11-25 18:34:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:47,253 INFO L225 Difference]: With dead ends: 17646 [2021-11-25 18:34:47,253 INFO L226 Difference]: Without dead ends: 16600 [2021-11-25 18:34:47,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=666, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:34:47,259 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 11553 mSDsluCounter, 13470 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11553 SdHoareTripleChecker+Valid, 16098 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:47,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11553 Valid, 16098 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:34:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16600 states. [2021-11-25 18:34:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16600 to 6887. [2021-11-25 18:34:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 6873 states have (on average 1.3171831805616179) internal successors, (9053), 6886 states have internal predecessors, (9053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9053 transitions. [2021-11-25 18:34:48,079 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9053 transitions. Word has length 67 [2021-11-25 18:34:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:48,079 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 9053 transitions. [2021-11-25 18:34:48,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 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) [2021-11-25 18:34:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9053 transitions. [2021-11-25 18:34:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:34:48,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:48,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:48,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:34:48,085 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:48,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2021-11-25 18:34:48,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:48,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522910361] [2021-11-25 18:34:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:48,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:48,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:48,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522910361] [2021-11-25 18:34:48,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522910361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:48,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:48,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:34:48,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154643527] [2021-11-25 18:34:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:48,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:34:48,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:34:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:48,153 INFO L87 Difference]: Start difference. First operand 6887 states and 9053 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-25 18:34:49,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:49,047 INFO L93 Difference]: Finished difference Result 9761 states and 12957 transitions. [2021-11-25 18:34:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:34:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2021-11-25 18:34:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:49,053 INFO L225 Difference]: With dead ends: 9761 [2021-11-25 18:34:49,053 INFO L226 Difference]: Without dead ends: 5882 [2021-11-25 18:34:49,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:49,060 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 1608 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:49,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 2126 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:34:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2021-11-25 18:34:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5864. [2021-11-25 18:34:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5854 states have (on average 1.3218312265117869) internal successors, (7738), 5863 states have internal predecessors, (7738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7738 transitions. [2021-11-25 18:34:49,860 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7738 transitions. Word has length 67 [2021-11-25 18:34:49,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:49,861 INFO L470 AbstractCegarLoop]: Abstraction has 5864 states and 7738 transitions. [2021-11-25 18:34:49,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-25 18:34:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7738 transitions. [2021-11-25 18:34:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:34:49,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:49,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:34:49,867 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:49,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2021-11-25 18:34:49,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:49,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599353105] [2021-11-25 18:34:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:49,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:49,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:49,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599353105] [2021-11-25 18:34:49,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599353105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:49,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:49,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:34:49,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533640034] [2021-11-25 18:34:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:49,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:34:49,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:49,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:34:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:49,972 INFO L87 Difference]: Start difference. First operand 5864 states and 7738 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:51,200 INFO L93 Difference]: Finished difference Result 9124 states and 12150 transitions. [2021-11-25 18:34:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:34:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 18:34:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:51,205 INFO L225 Difference]: With dead ends: 9124 [2021-11-25 18:34:51,205 INFO L226 Difference]: Without dead ends: 5526 [2021-11-25 18:34:51,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:51,210 INFO L933 BasicCegarLoop]: 1269 mSDtfsCounter, 1270 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:51,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1623 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:34:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-11-25 18:34:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5518. [2021-11-25 18:34:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5511 states have (on average 1.330067138450372) internal successors, (7330), 5517 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 7330 transitions. [2021-11-25 18:34:52,069 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 7330 transitions. Word has length 68 [2021-11-25 18:34:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:52,069 INFO L470 AbstractCegarLoop]: Abstraction has 5518 states and 7330 transitions. [2021-11-25 18:34:52,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 7330 transitions. [2021-11-25 18:34:52,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:34:52,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:52,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:52,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:34:52,076 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2021-11-25 18:34:52,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:52,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422950733] [2021-11-25 18:34:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:52,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:52,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:52,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422950733] [2021-11-25 18:34:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422950733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:52,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:52,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:34:52,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35106349] [2021-11-25 18:34:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:52,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:34:52,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:34:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:52,145 INFO L87 Difference]: Start difference. First operand 5518 states and 7330 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:53,515 INFO L93 Difference]: Finished difference Result 8032 states and 10951 transitions. [2021-11-25 18:34:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:34:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 18:34:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:53,521 INFO L225 Difference]: With dead ends: 8032 [2021-11-25 18:34:53,521 INFO L226 Difference]: Without dead ends: 5641 [2021-11-25 18:34:53,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:53,526 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 754 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:53,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1936 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:34:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2021-11-25 18:34:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4543. [2021-11-25 18:34:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4536 states have (on average 1.3368606701940036) internal successors, (6064), 4542 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 6064 transitions. [2021-11-25 18:34:54,350 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 6064 transitions. Word has length 68 [2021-11-25 18:34:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:54,350 INFO L470 AbstractCegarLoop]: Abstraction has 4543 states and 6064 transitions. [2021-11-25 18:34:54,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 6064 transitions. [2021-11-25 18:34:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:34:54,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:54,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:34:54,355 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2021-11-25 18:34:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831949345] [2021-11-25 18:34:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:54,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:54,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:54,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831949345] [2021-11-25 18:34:54,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831949345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:54,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:54,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:34:54,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186597691] [2021-11-25 18:34:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:54,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:34:54,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:34:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:54,447 INFO L87 Difference]: Start difference. First operand 4543 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:34:56,111 INFO L93 Difference]: Finished difference Result 9288 states and 12646 transitions. [2021-11-25 18:34:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:34:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 18:34:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:34:56,118 INFO L225 Difference]: With dead ends: 9288 [2021-11-25 18:34:56,118 INFO L226 Difference]: Without dead ends: 6893 [2021-11-25 18:34:56,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:56,122 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 775 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:34:56,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2483 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:34:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-11-25 18:34:57,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6885. [2021-11-25 18:34:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6878 states have (on average 1.3412329165455075) internal successors, (9225), 6884 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 9225 transitions. [2021-11-25 18:34:57,543 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 9225 transitions. Word has length 68 [2021-11-25 18:34:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:34:57,544 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 9225 transitions. [2021-11-25 18:34:57,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 9225 transitions. [2021-11-25 18:34:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:34:57,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:34:57,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:34:57,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:34:57,547 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:34:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:34:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2021-11-25 18:34:57,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:34:57,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638202867] [2021-11-25 18:34:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:34:57,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:34:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:34:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:57,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:34:57,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638202867] [2021-11-25 18:34:57,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638202867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:34:57,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:34:57,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:34:57,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531090173] [2021-11-25 18:34:57,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:34:57,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:34:57,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:34:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:34:57,609 INFO L87 Difference]: Start difference. First operand 6885 states and 9225 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:00,133 INFO L93 Difference]: Finished difference Result 14907 states and 20325 transitions. [2021-11-25 18:35:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:35:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 18:35:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:00,144 INFO L225 Difference]: With dead ends: 14907 [2021-11-25 18:35:00,144 INFO L226 Difference]: Without dead ends: 10329 [2021-11-25 18:35:00,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:35:00,150 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 669 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:00,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 2519 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:35:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2021-11-25 18:35:02,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10321. [2021-11-25 18:35:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10321 states, 10314 states have (on average 1.3368237347294938) internal successors, (13788), 10320 states have internal predecessors, (13788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 13788 transitions. [2021-11-25 18:35:02,639 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 13788 transitions. Word has length 68 [2021-11-25 18:35:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:02,639 INFO L470 AbstractCegarLoop]: Abstraction has 10321 states and 13788 transitions. [2021-11-25 18:35:02,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 13788 transitions. [2021-11-25 18:35:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:35:02,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:02,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:02,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:35:02,646 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2399851, now seen corresponding path program 1 times [2021-11-25 18:35:02,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:02,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154863163] [2021-11-25 18:35:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:02,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:02,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154863163] [2021-11-25 18:35:02,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154863163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:02,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:02,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:35:02,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815423890] [2021-11-25 18:35:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:02,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:35:02,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:35:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:35:02,778 INFO L87 Difference]: Start difference. First operand 10321 states and 13788 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2021-11-25 18:35:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:08,447 INFO L93 Difference]: Finished difference Result 15666 states and 20942 transitions. [2021-11-25 18:35:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:35:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 [2021-11-25 18:35:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:08,462 INFO L225 Difference]: With dead ends: 15666 [2021-11-25 18:35:08,462 INFO L226 Difference]: Without dead ends: 15055 [2021-11-25 18:35:08,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:35:08,466 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 4138 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:08,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4138 Valid, 3584 Invalid, 3514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 18:35:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15055 states. [2021-11-25 18:35:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15055 to 10320. [2021-11-25 18:35:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10320 states, 10313 states have (on average 1.3367594298458256) internal successors, (13786), 10319 states have internal predecessors, (13786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 13786 transitions. [2021-11-25 18:35:10,977 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 13786 transitions. Word has length 69 [2021-11-25 18:35:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:10,978 INFO L470 AbstractCegarLoop]: Abstraction has 10320 states and 13786 transitions. [2021-11-25 18:35:10,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2021-11-25 18:35:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 13786 transitions. [2021-11-25 18:35:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:35:10,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:10,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:10,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:35:10,982 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1878130755, now seen corresponding path program 1 times [2021-11-25 18:35:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:10,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600999779] [2021-11-25 18:35:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:10,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:11,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600999779] [2021-11-25 18:35:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600999779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:11,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:11,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:35:11,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033534744] [2021-11-25 18:35:11,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:11,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:35:11,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:35:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:35:11,239 INFO L87 Difference]: Start difference. First operand 10320 states and 13786 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 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) [2021-11-25 18:35:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:18,513 INFO L93 Difference]: Finished difference Result 22293 states and 30218 transitions. [2021-11-25 18:35:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:35:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 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 [2021-11-25 18:35:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:18,540 INFO L225 Difference]: With dead ends: 22293 [2021-11-25 18:35:18,540 INFO L226 Difference]: Without dead ends: 20281 [2021-11-25 18:35:18,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:35:18,547 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 5406 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:18,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 5748 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:35:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2021-11-25 18:35:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 10190. [2021-11-25 18:35:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 10186 states have (on average 1.3366385234635774) internal successors, (13615), 10189 states have internal predecessors, (13615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 13615 transitions. [2021-11-25 18:35:21,248 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 13615 transitions. Word has length 69 [2021-11-25 18:35:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 10190 states and 13615 transitions. [2021-11-25 18:35:21,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 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) [2021-11-25 18:35:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 13615 transitions. [2021-11-25 18:35:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:35:21,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:21,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:21,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 18:35:21,260 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2021-11-25 18:35:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:21,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667875128] [2021-11-25 18:35:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:21,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:21,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:21,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667875128] [2021-11-25 18:35:21,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667875128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:21,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:21,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:35:21,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357702773] [2021-11-25 18:35:21,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:35:21,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:35:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:35:21,320 INFO L87 Difference]: Start difference. First operand 10190 states and 13615 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2021-11-25 18:35:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:24,631 INFO L93 Difference]: Finished difference Result 19141 states and 25869 transitions. [2021-11-25 18:35:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:35:24,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2021-11-25 18:35:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:24,643 INFO L225 Difference]: With dead ends: 19141 [2021-11-25 18:35:24,643 INFO L226 Difference]: Without dead ends: 10404 [2021-11-25 18:35:24,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:35:24,660 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 933 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:24,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 1639 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:35:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2021-11-25 18:35:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 8323. [2021-11-25 18:35:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8319 states have (on average 1.3448731818728212) internal successors, (11188), 8322 states have internal predecessors, (11188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 11188 transitions. [2021-11-25 18:35:27,169 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 11188 transitions. Word has length 69 [2021-11-25 18:35:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 11188 transitions. [2021-11-25 18:35:27,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2021-11-25 18:35:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 11188 transitions. [2021-11-25 18:35:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:35:27,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:27,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:27,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:35:27,172 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2021-11-25 18:35:27,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045807539] [2021-11-25 18:35:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:27,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:27,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:27,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045807539] [2021-11-25 18:35:27,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045807539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:27,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:27,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:35:27,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931771415] [2021-11-25 18:35:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:27,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:35:27,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:35:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:35:27,342 INFO L87 Difference]: Start difference. First operand 8323 states and 11188 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 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) [2021-11-25 18:35:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:37,030 INFO L93 Difference]: Finished difference Result 21930 states and 29658 transitions. [2021-11-25 18:35:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:35:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 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 [2021-11-25 18:35:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:37,053 INFO L225 Difference]: With dead ends: 21930 [2021-11-25 18:35:37,053 INFO L226 Difference]: Without dead ends: 19902 [2021-11-25 18:35:37,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:35:37,058 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 4629 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4629 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:37,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4629 Valid, 3706 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:35:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19902 states. [2021-11-25 18:35:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19902 to 8251. [2021-11-25 18:35:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345822723414575) internal successors, (11099), 8250 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11099 transitions. [2021-11-25 18:35:39,618 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11099 transitions. Word has length 70 [2021-11-25 18:35:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:39,618 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11099 transitions. [2021-11-25 18:35:39,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 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) [2021-11-25 18:35:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11099 transitions. [2021-11-25 18:35:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:35:39,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:39,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:39,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 18:35:39,621 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2021-11-25 18:35:39,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:39,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694354192] [2021-11-25 18:35:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:39,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:39,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694354192] [2021-11-25 18:35:39,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694354192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:39,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:39,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:35:39,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28251373] [2021-11-25 18:35:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:39,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:35:39,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:35:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:35:39,760 INFO L87 Difference]: Start difference. First operand 8251 states and 11099 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2021-11-25 18:35:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:45,586 INFO L93 Difference]: Finished difference Result 13436 states and 18049 transitions. [2021-11-25 18:35:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:35:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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 [2021-11-25 18:35:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:45,600 INFO L225 Difference]: With dead ends: 13436 [2021-11-25 18:35:45,600 INFO L226 Difference]: Without dead ends: 12821 [2021-11-25 18:35:45,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:35:45,604 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 3441 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3441 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:45,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3441 Valid, 2491 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:35:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12821 states. [2021-11-25 18:35:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12821 to 8251. [2021-11-25 18:35:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345701467200194) internal successors, (11098), 8250 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11098 transitions. [2021-11-25 18:35:48,072 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11098 transitions. Word has length 70 [2021-11-25 18:35:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:48,072 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11098 transitions. [2021-11-25 18:35:48,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2021-11-25 18:35:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11098 transitions. [2021-11-25 18:35:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:35:48,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:48,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:48,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 18:35:48,075 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2021-11-25 18:35:48,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245000556] [2021-11-25 18:35:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:48,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:48,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:48,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245000556] [2021-11-25 18:35:48,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245000556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:48,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:48,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:35:48,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211434691] [2021-11-25 18:35:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:48,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:35:48,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:35:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:35:48,196 INFO L87 Difference]: Start difference. First operand 8251 states and 11098 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2021-11-25 18:35:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:35:55,040 INFO L93 Difference]: Finished difference Result 15519 states and 20914 transitions. [2021-11-25 18:35:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:35:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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 [2021-11-25 18:35:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:35:55,058 INFO L225 Difference]: With dead ends: 15519 [2021-11-25 18:35:55,058 INFO L226 Difference]: Without dead ends: 14565 [2021-11-25 18:35:55,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:35:55,063 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 3582 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:35:55,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3582 Valid, 3212 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:35:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2021-11-25 18:35:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 8251. [2021-11-25 18:35:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8251 states, 8247 states have (on average 1.345580210985813) internal successors, (11097), 8250 states have internal predecessors, (11097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:35:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11097 transitions. [2021-11-25 18:35:57,609 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11097 transitions. Word has length 70 [2021-11-25 18:35:57,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:35:57,610 INFO L470 AbstractCegarLoop]: Abstraction has 8251 states and 11097 transitions. [2021-11-25 18:35:57,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 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) [2021-11-25 18:35:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11097 transitions. [2021-11-25 18:35:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 18:35:57,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:35:57,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:35:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 18:35:57,613 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:35:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:35:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1750057004, now seen corresponding path program 1 times [2021-11-25 18:35:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:35:57,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146389092] [2021-11-25 18:35:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:35:57,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:35:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:35:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:35:57,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:35:57,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146389092] [2021-11-25 18:35:57,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146389092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:35:57,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:35:57,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:35:57,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083466274] [2021-11-25 18:35:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:35:57,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:35:57,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:35:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:35:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:35:57,680 INFO L87 Difference]: Start difference. First operand 8251 states and 11097 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:36:01,776 INFO L93 Difference]: Finished difference Result 18081 states and 24924 transitions. [2021-11-25 18:36:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:36:01,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-25 18:36:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:36:01,790 INFO L225 Difference]: With dead ends: 18081 [2021-11-25 18:36:01,790 INFO L226 Difference]: Without dead ends: 11842 [2021-11-25 18:36:01,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:36:01,800 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 602 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:36:01,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1587 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:36:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2021-11-25 18:36:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 10551. [2021-11-25 18:36:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 10547 states have (on average 1.357068360671281) internal successors, (14313), 10550 states have internal predecessors, (14313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 14313 transitions. [2021-11-25 18:36:05,345 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 14313 transitions. Word has length 71 [2021-11-25 18:36:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:36:05,345 INFO L470 AbstractCegarLoop]: Abstraction has 10551 states and 14313 transitions. [2021-11-25 18:36:05,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 14313 transitions. [2021-11-25 18:36:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 18:36:05,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:36:05,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:36:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 18:36:05,349 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:36:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:36:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1762815561, now seen corresponding path program 1 times [2021-11-25 18:36:05,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:36:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518550787] [2021-11-25 18:36:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:36:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:36:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:05,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:36:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518550787] [2021-11-25 18:36:05,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518550787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:36:05,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:36:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:36:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695925568] [2021-11-25 18:36:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:36:05,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:36:05,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:36:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:36:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:36:05,750 INFO L87 Difference]: Start difference. First operand 10551 states and 14313 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:36:21,274 INFO L93 Difference]: Finished difference Result 31966 states and 43477 transitions. [2021-11-25 18:36:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 18:36:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-25 18:36:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:36:21,320 INFO L225 Difference]: With dead ends: 31966 [2021-11-25 18:36:21,320 INFO L226 Difference]: Without dead ends: 31393 [2021-11-25 18:36:21,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:36:21,327 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 6765 mSDsluCounter, 8739 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6765 SdHoareTripleChecker+Valid, 9993 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:36:21,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6765 Valid, 9993 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:36:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31393 states. [2021-11-25 18:36:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31393 to 10540. [2021-11-25 18:36:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10540 states, 10537 states have (on average 1.3570276169687767) internal successors, (14299), 10539 states have internal predecessors, (14299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 14299 transitions. [2021-11-25 18:36:25,518 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 14299 transitions. Word has length 72 [2021-11-25 18:36:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:36:25,518 INFO L470 AbstractCegarLoop]: Abstraction has 10540 states and 14299 transitions. [2021-11-25 18:36:25,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 14299 transitions. [2021-11-25 18:36:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 18:36:25,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:36:25,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:36:25,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 18:36:25,521 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:36:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:36:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -891142700, now seen corresponding path program 1 times [2021-11-25 18:36:25,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:36:25,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844769721] [2021-11-25 18:36:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:36:25,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:36:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:25,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:36:25,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844769721] [2021-11-25 18:36:25,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844769721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:36:25,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:36:25,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:36:25,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912451843] [2021-11-25 18:36:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:36:25,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:36:25,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:36:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:36:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:36:25,574 INFO L87 Difference]: Start difference. First operand 10540 states and 14299 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:36:29,977 INFO L93 Difference]: Finished difference Result 20531 states and 28117 transitions. [2021-11-25 18:36:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:36:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-25 18:36:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:36:29,991 INFO L225 Difference]: With dead ends: 20531 [2021-11-25 18:36:29,991 INFO L226 Difference]: Without dead ends: 10856 [2021-11-25 18:36:29,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:36:30,000 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 954 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:36:30,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1387 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:36:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10856 states. [2021-11-25 18:36:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10856 to 9610. [2021-11-25 18:36:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9607 states have (on average 1.3642135942541898) internal successors, (13106), 9609 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 13106 transitions. [2021-11-25 18:36:33,732 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 13106 transitions. Word has length 72 [2021-11-25 18:36:33,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:36:33,733 INFO L470 AbstractCegarLoop]: Abstraction has 9610 states and 13106 transitions. [2021-11-25 18:36:33,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 13106 transitions. [2021-11-25 18:36:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:36:33,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:36:33,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:36:33,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 18:36:33,735 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:36:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:36:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2021-11-25 18:36:33,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:36:33,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775496234] [2021-11-25 18:36:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:36:33,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:36:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:34,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:36:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775496234] [2021-11-25 18:36:34,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775496234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:36:34,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:36:34,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:36:34,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515972556] [2021-11-25 18:36:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:36:34,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:36:34,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:36:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:36:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:36:34,049 INFO L87 Difference]: Start difference. First operand 9610 states and 13106 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:36:41,736 INFO L93 Difference]: Finished difference Result 16624 states and 22570 transitions. [2021-11-25 18:36:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:36:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-25 18:36:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:36:41,758 INFO L225 Difference]: With dead ends: 16624 [2021-11-25 18:36:41,758 INFO L226 Difference]: Without dead ends: 16058 [2021-11-25 18:36:41,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:36:41,763 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 5873 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5873 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:36:41,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5873 Valid, 4753 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:36:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16058 states. [2021-11-25 18:36:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16058 to 9606. [2021-11-25 18:36:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9604 states have (on average 1.364119117034569) internal successors, (13101), 9605 states have internal predecessors, (13101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 13101 transitions. [2021-11-25 18:36:45,458 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 13101 transitions. Word has length 73 [2021-11-25 18:36:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:36:45,458 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 13101 transitions. [2021-11-25 18:36:45,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 13101 transitions. [2021-11-25 18:36:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:36:45,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:36:45,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:36:45,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 18:36:45,461 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:36:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:36:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2021-11-25 18:36:45,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:36:45,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920203096] [2021-11-25 18:36:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:36:45,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:36:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:45,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:36:45,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920203096] [2021-11-25 18:36:45,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920203096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:36:45,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:36:45,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:36:45,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834606449] [2021-11-25 18:36:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:36:45,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:36:45,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:36:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:36:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:36:45,849 INFO L87 Difference]: Start difference. First operand 9606 states and 13101 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:03,902 INFO L93 Difference]: Finished difference Result 35079 states and 47591 transitions. [2021-11-25 18:37:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 18:37:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-25 18:37:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:03,945 INFO L225 Difference]: With dead ends: 35079 [2021-11-25 18:37:03,946 INFO L226 Difference]: Without dead ends: 34496 [2021-11-25 18:37:03,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:37:03,952 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 6544 mSDsluCounter, 9253 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 10580 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:03,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6544 Valid, 10580 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:37:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34496 states. [2021-11-25 18:37:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34496 to 9585. [2021-11-25 18:37:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 9584 states have (on average 1.3642529215358932) internal successors, (13075), 9584 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 13075 transitions. [2021-11-25 18:37:07,904 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 13075 transitions. Word has length 73 [2021-11-25 18:37:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:07,904 INFO L470 AbstractCegarLoop]: Abstraction has 9585 states and 13075 transitions. [2021-11-25 18:37:07,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 13075 transitions. [2021-11-25 18:37:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:37:07,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:07,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:07,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 18:37:07,907 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:37:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash -397158000, now seen corresponding path program 1 times [2021-11-25 18:37:07,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:07,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351677293] [2021-11-25 18:37:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:07,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:07,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351677293] [2021-11-25 18:37:07,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351677293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:07,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:07,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:07,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164122976] [2021-11-25 18:37:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:07,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:07,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:07,971 INFO L87 Difference]: Start difference. First operand 9585 states and 13075 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:13,776 INFO L93 Difference]: Finished difference Result 22633 states and 31293 transitions. [2021-11-25 18:37:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-25 18:37:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:13,793 INFO L225 Difference]: With dead ends: 22633 [2021-11-25 18:37:13,793 INFO L226 Difference]: Without dead ends: 14183 [2021-11-25 18:37:13,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:13,803 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 623 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:13,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 1374 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:37:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14183 states. [2021-11-25 18:37:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14183 to 13163. [2021-11-25 18:37:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.361951071265765) internal successors, (17926), 13162 states have internal predecessors, (17926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 17926 transitions. [2021-11-25 18:37:19,147 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 17926 transitions. Word has length 73 [2021-11-25 18:37:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:19,147 INFO L470 AbstractCegarLoop]: Abstraction has 13163 states and 17926 transitions. [2021-11-25 18:37:19,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 17926 transitions. [2021-11-25 18:37:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:37:19,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:19,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:19,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 18:37:19,149 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:37:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 491799337, now seen corresponding path program 1 times [2021-11-25 18:37:19,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:19,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978348375] [2021-11-25 18:37:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:19,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:19,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978348375] [2021-11-25 18:37:19,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978348375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:19,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:19,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:37:19,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217234320] [2021-11-25 18:37:19,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:19,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:37:19,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:37:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:37:19,244 INFO L87 Difference]: Start difference. First operand 13163 states and 17926 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:24,578 INFO L93 Difference]: Finished difference Result 24435 states and 33470 transitions. [2021-11-25 18:37:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:37:24,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-25 18:37:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:24,594 INFO L225 Difference]: With dead ends: 24435 [2021-11-25 18:37:24,594 INFO L226 Difference]: Without dead ends: 12439 [2021-11-25 18:37:24,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:37:24,605 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1351 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:24,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1581 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:37:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2021-11-25 18:37:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12433. [2021-11-25 18:37:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12432 states have (on average 1.3564189189189189) internal successors, (16863), 12432 states have internal predecessors, (16863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:29,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16863 transitions. [2021-11-25 18:37:29,787 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16863 transitions. Word has length 73 [2021-11-25 18:37:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:29,787 INFO L470 AbstractCegarLoop]: Abstraction has 12433 states and 16863 transitions. [2021-11-25 18:37:29,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16863 transitions. [2021-11-25 18:37:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 18:37:29,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:29,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:29,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 18:37:29,790 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:37:29,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 438553479, now seen corresponding path program 1 times [2021-11-25 18:37:29,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:29,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419487455] [2021-11-25 18:37:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:29,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:29,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:29,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419487455] [2021-11-25 18:37:29,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419487455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:29,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:29,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:29,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748044574] [2021-11-25 18:37:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:29,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:29,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:29,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:29,852 INFO L87 Difference]: Start difference. First operand 12433 states and 16863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:37,708 INFO L93 Difference]: Finished difference Result 29660 states and 40659 transitions. [2021-11-25 18:37:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-25 18:37:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:37,728 INFO L225 Difference]: With dead ends: 29660 [2021-11-25 18:37:37,728 INFO L226 Difference]: Without dead ends: 18758 [2021-11-25 18:37:37,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:37,735 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 529 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:37,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1398 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:37:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2021-11-25 18:37:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 17324. [2021-11-25 18:37:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17324 states, 17323 states have (on average 1.351324828263003) internal successors, (23409), 17323 states have internal predecessors, (23409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 23409 transitions. [2021-11-25 18:37:44,962 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 23409 transitions. Word has length 75 [2021-11-25 18:37:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:44,962 INFO L470 AbstractCegarLoop]: Abstraction has 17324 states and 23409 transitions. [2021-11-25 18:37:44,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 23409 transitions. [2021-11-25 18:37:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 18:37:44,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:44,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:44,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 18:37:44,964 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:37:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1140941538, now seen corresponding path program 1 times [2021-11-25 18:37:44,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291278395] [2021-11-25 18:37:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:44,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:37:45,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:45,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291278395] [2021-11-25 18:37:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291278395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:45,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:45,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:37:45,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708161026] [2021-11-25 18:37:45,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:45,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:37:45,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:37:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:45,022 INFO L87 Difference]: Start difference. First operand 17324 states and 23409 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:37:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:55,944 INFO L93 Difference]: Finished difference Result 41600 states and 56726 transitions. [2021-11-25 18:37:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:37:55,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 18:37:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:55,980 INFO L225 Difference]: With dead ends: 41600 [2021-11-25 18:37:55,980 INFO L226 Difference]: Without dead ends: 26214 [2021-11-25 18:37:55,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:37:55,994 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 420 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:55,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1464 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:37:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26214 states. [2021-11-25 18:38:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26214 to 24134. [2021-11-25 18:38:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24134 states, 24133 states have (on average 1.3438445282393403) internal successors, (32431), 24133 states have internal predecessors, (32431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24134 states to 24134 states and 32431 transitions. [2021-11-25 18:38:06,609 INFO L78 Accepts]: Start accepts. Automaton has 24134 states and 32431 transitions. Word has length 78 [2021-11-25 18:38:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:06,610 INFO L470 AbstractCegarLoop]: Abstraction has 24134 states and 32431 transitions. [2021-11-25 18:38:06,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 24134 states and 32431 transitions. [2021-11-25 18:38:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 18:38:06,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:06,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:06,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 18:38:06,613 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:38:06,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1875624208, now seen corresponding path program 1 times [2021-11-25 18:38:06,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:06,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015050081] [2021-11-25 18:38:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:06,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:38:06,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015050081] [2021-11-25 18:38:06,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015050081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:06,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:06,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:38:06,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337971149] [2021-11-25 18:38:06,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:06,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:38:06,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:38:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:38:06,750 INFO L87 Difference]: Start difference. First operand 24134 states and 32431 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:36,462 INFO L93 Difference]: Finished difference Result 58731 states and 78403 transitions. [2021-11-25 18:38:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:38:36,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 18:38:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:36,563 INFO L225 Difference]: With dead ends: 58731 [2021-11-25 18:38:36,563 INFO L226 Difference]: Without dead ends: 58729 [2021-11-25 18:38:36,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:38:36,576 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 4659 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:36,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 5339 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:38:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58729 states. [2021-11-25 18:38:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58729 to 26241. [2021-11-25 18:38:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 26240 states have (on average 1.3388338414634147) internal successors, (35131), 26240 states have internal predecessors, (35131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 35131 transitions. [2021-11-25 18:38:49,783 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 35131 transitions. Word has length 82 [2021-11-25 18:38:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:49,783 INFO L470 AbstractCegarLoop]: Abstraction has 26241 states and 35131 transitions. [2021-11-25 18:38:49,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:38:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 35131 transitions. [2021-11-25 18:38:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 18:38:49,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:49,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:49,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 18:38:49,786 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:38:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash 587842462, now seen corresponding path program 1 times [2021-11-25 18:38:49,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658875769] [2021-11-25 18:38:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:49,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:38:49,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:49,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658875769] [2021-11-25 18:38:49,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658875769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:49,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:49,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:38:49,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279507255] [2021-11-25 18:38:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:49,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:38:49,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:38:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:38:49,849 INFO L87 Difference]: Start difference. First operand 26241 states and 35131 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) [2021-11-25 18:39:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:08,941 INFO L93 Difference]: Finished difference Result 59653 states and 80695 transitions. [2021-11-25 18:39:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:39:08,942 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 [2021-11-25 18:39:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:09,007 INFO L225 Difference]: With dead ends: 59653 [2021-11-25 18:39:09,007 INFO L226 Difference]: Without dead ends: 37870 [2021-11-25 18:39:09,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:39:09,031 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 592 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:39:09,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1340 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:39:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37870 states.