./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/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 dad2aa6a134d55c6f9e0680e747fcd11c50dca1f4f191403c757088bda5dc252 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:22:16,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:22:16,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:22:17,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:22:17,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:22:17,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:22:17,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:22:17,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:22:17,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:22:17,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:22:17,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:22:17,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:22:17,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:22:17,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:22:17,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:22:17,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:22:17,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:22:17,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:22:17,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:22:17,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:22:17,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:22:17,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:22:17,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:22:17,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:22:17,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:22:17,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:22:17,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:22:17,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:22:17,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:22:17,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:22:17,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:22:17,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:22:17,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:22:17,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:22:17,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:22:17,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:22:17,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:22:17,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:22:17,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:22:17,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:22:17,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:22:17,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:22:17,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:22:17,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:22:17,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:22:17,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:22:17,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:22:17,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:22:17,150 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:22:17,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:22:17,151 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:22:17,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:22:17,151 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:22:17,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:22:17,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:22:17,152 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:22:17,152 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:22:17,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:22:17,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:22:17,153 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:22:17,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:22:17,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:22:17,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:22:17,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:22:17,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:22:17,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:22:17,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:22:17,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:22:17,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:22:17,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:22:17,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:22:17,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:22:17,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:22:17,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:22:17,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:22:17,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:22:17,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:22:17,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:22:17,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:22:17,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:22:17,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:22:17,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:22:17,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:22:17,159 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad2aa6a134d55c6f9e0680e747fcd11c50dca1f4f191403c757088bda5dc252 [2021-11-25 18:22:17,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:22:17,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:22:17,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:22:17,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:22:17,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:22:17,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 18:22:17,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/data/4588cf8f7/38d68e05972d4fa1b5f139ca2f2f374c/FLAGd29cae985 [2021-11-25 18:22:18,394 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:22:18,395 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 18:22:18,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/data/4588cf8f7/38d68e05972d4fa1b5f139ca2f2f374c/FLAGd29cae985 [2021-11-25 18:22:18,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/data/4588cf8f7/38d68e05972d4fa1b5f139ca2f2f374c [2021-11-25 18:22:18,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:22:18,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:22:18,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:18,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:22:18,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:22:18,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:18" (1/1) ... [2021-11-25 18:22:18,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68518f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18, skipping insertion in model container [2021-11-25 18:22:18,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:18" (1/1) ... [2021-11-25 18:22:18,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:22:18,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:22:19,602 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2021-11-25 18:22:19,652 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2021-11-25 18:22:19,766 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2021-11-25 18:22:19,791 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2021-11-25 18:22:19,810 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2021-11-25 18:22:19,846 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2021-11-25 18:22:19,870 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2021-11-25 18:22:19,908 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2021-11-25 18:22:20,077 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2021-11-25 18:22:20,087 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2021-11-25 18:22:20,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2021-11-25 18:22:20,135 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2021-11-25 18:22:20,257 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2021-11-25 18:22:20,341 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2021-11-25 18:22:20,422 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2021-11-25 18:22:20,494 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2021-11-25 18:22:20,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2021-11-25 18:22:20,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:20,892 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:22:21,059 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2021-11-25 18:22:21,076 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2021-11-25 18:22:21,134 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2021-11-25 18:22:21,153 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2021-11-25 18:22:21,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2021-11-25 18:22:21,196 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2021-11-25 18:22:21,217 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2021-11-25 18:22:21,236 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2021-11-25 18:22:21,319 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2021-11-25 18:22:21,328 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2021-11-25 18:22:21,347 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2021-11-25 18:22:21,363 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2021-11-25 18:22:21,418 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2021-11-25 18:22:21,488 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2021-11-25 18:22:21,566 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2021-11-25 18:22:21,627 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2021-11-25 18:22:21,698 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_4d7daed4-5c3d-42b9-9541-599c6accc0c5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2021-11-25 18:22:21,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:22,006 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:22:22,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22 WrapperNode [2021-11-25 18:22:22,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:22,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:22,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:22:22,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:22:22,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,311 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18051 [2021-11-25 18:22:22,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:22,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:22:22,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:22:22,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:22:22,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:22:22,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:22:22,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:22:22,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:22:22,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (1/1) ... [2021-11-25 18:22:22,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:22:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:22,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:22:22,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7daed4-5c3d-42b9-9541-599c6accc0c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:22:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:22:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:22:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:22:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:22:23,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:22:23,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:22:30,811 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:22:32,132 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:22:32,132 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:22:32,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:32 BoogieIcfgContainer [2021-11-25 18:22:32,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:22:32,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:22:32,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:22:32,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:22:32,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:18" (1/3) ... [2021-11-25 18:22:32,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:32, skipping insertion in model container [2021-11-25 18:22:32,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:22" (2/3) ... [2021-11-25 18:22:32,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:32, skipping insertion in model container [2021-11-25 18:22:32,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:32" (3/3) ... [2021-11-25 18:22:32,151 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-11-25 18:22:32,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:22:32,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-25 18:22:32,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:22:32,224 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 18:22:32,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-25 18:22:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 18:22:32,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:32,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:32,374 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 18:22:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash -354004625, now seen corresponding path program 1 times [2021-11-25 18:22:32,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:32,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490792018] [2021-11-25 18:22:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:32,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:33,028 INFO 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 18:22:33,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490792018] [2021-11-25 18:22:33,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490792018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:33,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:33,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:33,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570239061] [2021-11-25 18:22:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:33,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:33,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:33,075 INFO L87 Difference]: Start difference. First operand has 3597 states, 3579 states have (on average 1.7812238055322716) internal successors, (6375), 3596 states have internal predecessors, (6375), 0 states have call successors, (0), 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 12.8) 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 18:22:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:37,142 INFO L93 Difference]: Finished difference Result 6724 states and 11654 transitions. [2021-11-25 18:22:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:37,145 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 18:22:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:37,191 INFO L225 Difference]: With dead ends: 6724 [2021-11-25 18:22:37,192 INFO L226 Difference]: Without dead ends: 4305 [2021-11-25 18:22:37,204 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 18:22:37,210 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 19362 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19362 SdHoareTripleChecker+Valid, 4061 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:37,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19362 Valid, 4061 Invalid, 3628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [235 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:22:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2021-11-25 18:22:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4280. [2021-11-25 18:22:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4263 states have (on average 1.2758620689655173) internal successors, (5439), 4279 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5439 transitions. [2021-11-25 18:22:37,549 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5439 transitions. Word has length 64 [2021-11-25 18:22:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:37,551 INFO L470 AbstractCegarLoop]: Abstraction has 4280 states and 5439 transitions. [2021-11-25 18:22:37,551 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 18:22:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5439 transitions. [2021-11-25 18:22:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:22:37,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:37,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:37,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:22:37,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:22:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash 838909937, now seen corresponding path program 1 times [2021-11-25 18:22:37,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232101189] [2021-11-25 18:22:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:37,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:37,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:37,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232101189] [2021-11-25 18:22:37,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232101189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:37,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:37,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:37,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477960984] [2021-11-25 18:22:37,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:37,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:37,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:37,802 INFO L87 Difference]: Start difference. First operand 4280 states and 5439 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 18:22:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:40,443 INFO L93 Difference]: Finished difference Result 7947 states and 10075 transitions. [2021-11-25 18:22:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:40,444 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 18:22:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:40,473 INFO L225 Difference]: With dead ends: 7947 [2021-11-25 18:22:40,473 INFO L226 Difference]: Without dead ends: 5317 [2021-11-25 18:22:40,481 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 18:22:40,483 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 12226 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:40,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 2270 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:22:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2021-11-25 18:22:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 5287. [2021-11-25 18:22:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5270 states have (on average 1.2736242884250475) internal successors, (6712), 5286 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6712 transitions. [2021-11-25 18:22:40,736 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6712 transitions. Word has length 65 [2021-11-25 18:22:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:40,737 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 6712 transitions. [2021-11-25 18:22:40,737 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 18:22:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6712 transitions. [2021-11-25 18:22:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:22:40,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:40,751 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 18:22:40,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:22:40,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:22:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1512929807, now seen corresponding path program 1 times [2021-11-25 18:22:40,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:40,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242552451] [2021-11-25 18:22:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:40,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:40,964 INFO 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 18:22:40,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:40,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242552451] [2021-11-25 18:22:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242552451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:40,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:40,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:40,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767428446] [2021-11-25 18:22:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:40,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:40,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:40,967 INFO L87 Difference]: Start difference. First operand 5287 states and 6712 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 18:22:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:43,457 INFO L93 Difference]: Finished difference Result 10460 states and 13243 transitions. [2021-11-25 18:22:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:43,458 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 18:22:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:43,496 INFO L225 Difference]: With dead ends: 10460 [2021-11-25 18:22:43,496 INFO L226 Difference]: Without dead ends: 6516 [2021-11-25 18:22:43,504 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 18:22:43,508 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 10467 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10467 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:43,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10467 Valid, 2002 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 18:22:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2021-11-25 18:22:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 6496. [2021-11-25 18:22:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6496 states, 6479 states have (on average 1.2690229973761382) internal successors, (8222), 6495 states have internal predecessors, (8222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 8222 transitions. [2021-11-25 18:22:43,896 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 8222 transitions. Word has length 65 [2021-11-25 18:22:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:43,899 INFO L470 AbstractCegarLoop]: Abstraction has 6496 states and 8222 transitions. [2021-11-25 18:22:43,899 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 18:22:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 8222 transitions. [2021-11-25 18:22:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:22:43,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:43,912 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 18:22:43,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:22:43,912 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 18:22:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1700677701, now seen corresponding path program 1 times [2021-11-25 18:22:43,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:43,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705497875] [2021-11-25 18:22:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:43,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:44,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:44,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705497875] [2021-11-25 18:22:44,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705497875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:44,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:44,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:44,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164229629] [2021-11-25 18:22:44,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:44,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:44,103 INFO L87 Difference]: Start difference. First operand 6496 states and 8222 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 18:22:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:45,976 INFO L93 Difference]: Finished difference Result 12428 states and 15786 transitions. [2021-11-25 18:22:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 18:22:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:46,026 INFO L225 Difference]: With dead ends: 12428 [2021-11-25 18:22:46,027 INFO L226 Difference]: Without dead ends: 8280 [2021-11-25 18:22:46,035 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 18:22:46,036 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 8683 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8683 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:46,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8683 Valid, 1726 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:22:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2021-11-25 18:22:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8240. [2021-11-25 18:22:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8223 states have (on average 1.2736227654140824) internal successors, (10473), 8239 states have internal predecessors, (10473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 10473 transitions. [2021-11-25 18:22:46,519 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 10473 transitions. Word has length 66 [2021-11-25 18:22:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:46,520 INFO L470 AbstractCegarLoop]: Abstraction has 8240 states and 10473 transitions. [2021-11-25 18:22:46,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 18:22:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 10473 transitions. [2021-11-25 18:22:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:22:46,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:46,529 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 18:22:46,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:22:46,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:22:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1596749287, now seen corresponding path program 1 times [2021-11-25 18:22:46,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732369107] [2021-11-25 18:22:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:46,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:46,707 INFO 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 18:22:46,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732369107] [2021-11-25 18:22:46,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732369107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:46,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:46,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:22:46,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524966613] [2021-11-25 18:22:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:46,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:22:46,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:22:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:22:46,712 INFO L87 Difference]: Start difference. First operand 8240 states and 10473 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 18:22:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:50,016 INFO L93 Difference]: Finished difference Result 12223 states and 15846 transitions. [2021-11-25 18:22:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:22:50,016 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 18:22:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:50,063 INFO L225 Difference]: With dead ends: 12223 [2021-11-25 18:22:50,063 INFO L226 Difference]: Without dead ends: 11097 [2021-11-25 18:22:50,069 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 18:22:50,070 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 9217 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9217 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:50,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9217 Valid, 4420 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:22:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11097 states. [2021-11-25 18:22:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11097 to 8096. [2021-11-25 18:22:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8096 states, 8079 states have (on average 1.2734249288278252) internal successors, (10288), 8095 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8096 states to 8096 states and 10288 transitions. [2021-11-25 18:22:50,579 INFO L78 Accepts]: Start accepts. Automaton has 8096 states and 10288 transitions. Word has length 67 [2021-11-25 18:22:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:50,580 INFO L470 AbstractCegarLoop]: Abstraction has 8096 states and 10288 transitions. [2021-11-25 18:22:50,580 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 18:22:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 8096 states and 10288 transitions. [2021-11-25 18:22:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 18:22:50,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:50,589 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 18:22:50,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:22:50,590 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:22:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash -738498771, now seen corresponding path program 1 times [2021-11-25 18:22:50,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:50,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490228649] [2021-11-25 18:22:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:50,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:50,751 INFO 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 18:22:50,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:50,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490228649] [2021-11-25 18:22:50,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490228649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:50,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:50,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:22:50,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572395244] [2021-11-25 18:22:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:50,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:22:50,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:22:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:50,754 INFO L87 Difference]: Start difference. First operand 8096 states and 10288 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 18:22:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:55,219 INFO L93 Difference]: Finished difference Result 14777 states and 19115 transitions. [2021-11-25 18:22:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:22:55,219 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 18:22:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:55,248 INFO L225 Difference]: With dead ends: 14777 [2021-11-25 18:22:55,248 INFO L226 Difference]: Without dead ends: 13761 [2021-11-25 18:22:55,253 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 18:22:55,254 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 5069 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 7139 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 6939 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 7139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:55,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 6939 Invalid, 7347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 7139 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:22:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2021-11-25 18:22:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 8046. [2021-11-25 18:22:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8046 states, 8029 states have (on average 1.2732594345497572) internal successors, (10223), 8045 states have internal predecessors, (10223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8046 states to 8046 states and 10223 transitions. [2021-11-25 18:22:55,735 INFO L78 Accepts]: Start accepts. Automaton has 8046 states and 10223 transitions. Word has length 67 [2021-11-25 18:22:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:55,736 INFO L470 AbstractCegarLoop]: Abstraction has 8046 states and 10223 transitions. [2021-11-25 18:22:55,737 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 18:22:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 8046 states and 10223 transitions. [2021-11-25 18:22:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:22:55,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:55,745 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 18:22:55,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:22:55,746 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:22:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 757912053, now seen corresponding path program 1 times [2021-11-25 18:22:55,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:55,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249184281] [2021-11-25 18:22:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:55,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:56,246 INFO 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 18:22:56,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249184281] [2021-11-25 18:22:56,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249184281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:56,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:56,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:22:56,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250399157] [2021-11-25 18:22:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:22:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:22:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:22:56,248 INFO L87 Difference]: Start difference. First operand 8046 states and 10223 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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 18:22:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:58,959 INFO L93 Difference]: Finished difference Result 12713 states and 16634 transitions. [2021-11-25 18:22:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:22:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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 18:22:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:58,988 INFO L225 Difference]: With dead ends: 12713 [2021-11-25 18:22:58,988 INFO L226 Difference]: Without dead ends: 12709 [2021-11-25 18:22:58,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:22:58,994 INFO L933 BasicCegarLoop]: 2511 mSDtfsCounter, 14015 mSDsluCounter, 11043 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14015 SdHoareTripleChecker+Valid, 13410 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:58,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14015 Valid, 13410 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:22:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12709 states. [2021-11-25 18:22:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12709 to 8042. [2021-11-25 18:22:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8026 states have (on average 1.2732369798155994) internal successors, (10219), 8041 states have internal predecessors, (10219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 10219 transitions. [2021-11-25 18:22:59,647 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 10219 transitions. Word has length 68 [2021-11-25 18:22:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:59,647 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 10219 transitions. [2021-11-25 18:22:59,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 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 18:22:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 10219 transitions. [2021-11-25 18:22:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:22:59,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:59,655 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 18:22:59,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:22:59,656 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 18:22:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1434028365, now seen corresponding path program 1 times [2021-11-25 18:22:59,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:59,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526346528] [2021-11-25 18:22:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:59,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:59,807 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 18:22:59,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:59,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526346528] [2021-11-25 18:22:59,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526346528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:59,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:59,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:22:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513192509] [2021-11-25 18:22:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:59,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:22:59,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:22:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:59,810 INFO L87 Difference]: Start difference. First operand 8042 states and 10219 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:02,813 INFO L93 Difference]: Finished difference Result 9383 states and 11927 transitions. [2021-11-25 18:23:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:23:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:02,831 INFO L225 Difference]: With dead ends: 9383 [2021-11-25 18:23:02,831 INFO L226 Difference]: Without dead ends: 9377 [2021-11-25 18:23:02,835 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 18:23:02,835 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 5110 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 5624 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5110 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 5731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 5624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:02,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5110 Valid, 6269 Invalid, 5731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 5624 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:23:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9377 states. [2021-11-25 18:23:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9377 to 8042. [2021-11-25 18:23:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8026 states have (on average 1.273112384749564) internal successors, (10218), 8041 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 10218 transitions. [2021-11-25 18:23:03,491 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 10218 transitions. Word has length 68 [2021-11-25 18:23:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:03,492 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 10218 transitions. [2021-11-25 18:23:03,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 10218 transitions. [2021-11-25 18:23:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:23:03,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:03,500 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 18:23:03,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:23:03,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -896669404, now seen corresponding path program 1 times [2021-11-25 18:23:03,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015318862] [2021-11-25 18:23:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:03,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:03,638 INFO 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 18:23:03,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:03,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015318862] [2021-11-25 18:23:03,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015318862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:03,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:03,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:23:03,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720834169] [2021-11-25 18:23:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:03,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:03,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:03,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:03,641 INFO L87 Difference]: Start difference. First operand 8042 states and 10218 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:06,704 INFO L93 Difference]: Finished difference Result 10101 states and 12789 transitions. [2021-11-25 18:23:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:23:06,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:06,718 INFO L225 Difference]: With dead ends: 10101 [2021-11-25 18:23:06,718 INFO L226 Difference]: Without dead ends: 10092 [2021-11-25 18:23:06,721 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 18:23:06,722 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 5998 mSDsluCounter, 4043 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5998 SdHoareTripleChecker+Valid, 5306 SdHoareTripleChecker+Invalid, 5313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:06,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5998 Valid, 5306 Invalid, 5313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:23:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2021-11-25 18:23:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 8042. [2021-11-25 18:23:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8026 states have (on average 1.2729877896835284) internal successors, (10217), 8041 states have internal predecessors, (10217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 10217 transitions. [2021-11-25 18:23:07,239 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 10217 transitions. Word has length 68 [2021-11-25 18:23:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 10217 transitions. [2021-11-25 18:23:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 18:23:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 10217 transitions. [2021-11-25 18:23:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:23:07,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:07,247 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 18:23:07,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:23:07,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1848914971, now seen corresponding path program 1 times [2021-11-25 18:23:07,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:07,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138430345] [2021-11-25 18:23:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:07,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:07,533 INFO 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 18:23:07,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:07,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138430345] [2021-11-25 18:23:07,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138430345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:07,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:07,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:23:07,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736124993] [2021-11-25 18:23:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:07,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:23:07,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:23:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:23:07,536 INFO L87 Difference]: Start difference. First operand 8042 states and 10217 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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 18:23:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:10,169 INFO L93 Difference]: Finished difference Result 12704 states and 16621 transitions. [2021-11-25 18:23:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:23:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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 18:23:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:10,188 INFO L225 Difference]: With dead ends: 12704 [2021-11-25 18:23:10,188 INFO L226 Difference]: Without dead ends: 12700 [2021-11-25 18:23:10,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:23:10,194 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 13941 mSDsluCounter, 9969 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13941 SdHoareTripleChecker+Valid, 12328 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:10,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13941 Valid, 12328 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:23:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12700 states. [2021-11-25 18:23:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12700 to 8038. [2021-11-25 18:23:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8038 states, 8023 states have (on average 1.2729652249781878) internal successors, (10213), 8037 states have internal predecessors, (10213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8038 states to 8038 states and 10213 transitions. [2021-11-25 18:23:10,846 INFO L78 Accepts]: Start accepts. Automaton has 8038 states and 10213 transitions. Word has length 68 [2021-11-25 18:23:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:10,847 INFO L470 AbstractCegarLoop]: Abstraction has 8038 states and 10213 transitions. [2021-11-25 18:23:10,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 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 18:23:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8038 states and 10213 transitions. [2021-11-25 18:23:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:23:10,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:10,856 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 18:23:10,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:23:10,856 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash 267145537, now seen corresponding path program 1 times [2021-11-25 18:23:10,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:10,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512080747] [2021-11-25 18:23:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:10,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:11,195 INFO 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 18:23:11,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:11,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512080747] [2021-11-25 18:23:11,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512080747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:11,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:11,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:23:11,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521255248] [2021-11-25 18:23:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:11,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:23:11,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:23:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:23:11,198 INFO L87 Difference]: Start difference. First operand 8038 states and 10213 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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 18:23:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:14,226 INFO L93 Difference]: Finished difference Result 13357 states and 17441 transitions. [2021-11-25 18:23:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:23:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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 18:23:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:14,238 INFO L225 Difference]: With dead ends: 13357 [2021-11-25 18:23:14,238 INFO L226 Difference]: Without dead ends: 13348 [2021-11-25 18:23:14,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:23:14,241 INFO L933 BasicCegarLoop]: 2525 mSDtfsCounter, 14083 mSDsluCounter, 11306 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14083 SdHoareTripleChecker+Valid, 13688 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:14,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14083 Valid, 13688 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:23:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2021-11-25 18:23:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 8029. [2021-11-25 18:23:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8029 states, 8015 states have (on average 1.272988147223955) internal successors, (10203), 8028 states have internal predecessors, (10203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 10203 transitions. [2021-11-25 18:23:15,002 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 10203 transitions. Word has length 69 [2021-11-25 18:23:15,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:15,002 INFO L470 AbstractCegarLoop]: Abstraction has 8029 states and 10203 transitions. [2021-11-25 18:23:15,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 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 18:23:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 10203 transitions. [2021-11-25 18:23:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:23:15,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:15,010 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 18:23:15,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:23:15,011 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 554101842, now seen corresponding path program 1 times [2021-11-25 18:23:15,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:15,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227487784] [2021-11-25 18:23:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:15,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:15,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:15,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227487784] [2021-11-25 18:23:15,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227487784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:15,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:15,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:23:15,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72889961] [2021-11-25 18:23:15,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:15,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:23:15,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:23:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:23:15,269 INFO L87 Difference]: Start difference. First operand 8029 states and 10203 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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 18:23:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:18,797 INFO L93 Difference]: Finished difference Result 15667 states and 20660 transitions. [2021-11-25 18:23:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:23:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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 18:23:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:18,811 INFO L225 Difference]: With dead ends: 15667 [2021-11-25 18:23:18,811 INFO L226 Difference]: Without dead ends: 14585 [2021-11-25 18:23:18,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:23:18,817 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 12799 mSDsluCounter, 8111 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12799 SdHoareTripleChecker+Valid, 10409 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:18,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12799 Valid, 10409 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:23:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14585 states. [2021-11-25 18:23:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14585 to 7990. [2021-11-25 18:23:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7990 states, 7976 states have (on average 1.273445336008024) internal successors, (10157), 7989 states have internal predecessors, (10157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 10157 transitions. [2021-11-25 18:23:19,890 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 10157 transitions. Word has length 69 [2021-11-25 18:23:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:19,891 INFO L470 AbstractCegarLoop]: Abstraction has 7990 states and 10157 transitions. [2021-11-25 18:23:19,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 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 18:23:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 10157 transitions. [2021-11-25 18:23:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 18:23:19,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:19,899 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 18:23:19,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:23:19,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash -631202535, now seen corresponding path program 1 times [2021-11-25 18:23:19,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:19,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509737005] [2021-11-25 18:23:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:19,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:19,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:19,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509737005] [2021-11-25 18:23:19,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509737005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:19,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:19,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:19,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974608249] [2021-11-25 18:23:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:19,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:19,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:19,976 INFO L87 Difference]: Start difference. First operand 7990 states and 10157 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 18:23:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:20,837 INFO L93 Difference]: Finished difference Result 11225 states and 14418 transitions. [2021-11-25 18:23:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:20,837 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 18:23:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:20,844 INFO L225 Difference]: With dead ends: 11225 [2021-11-25 18:23:20,844 INFO L226 Difference]: Without dead ends: 6939 [2021-11-25 18:23:20,850 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 18:23:20,851 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1769 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:20,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 2360 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6939 states. [2021-11-25 18:23:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6939 to 6920. [2021-11-25 18:23:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6920 states, 6910 states have (on average 1.2808972503617946) internal successors, (8851), 6919 states have internal predecessors, (8851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 8851 transitions. [2021-11-25 18:23:21,689 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 8851 transitions. Word has length 69 [2021-11-25 18:23:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:21,689 INFO L470 AbstractCegarLoop]: Abstraction has 6920 states and 8851 transitions. [2021-11-25 18:23:21,689 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 18:23:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 8851 transitions. [2021-11-25 18:23:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:23:21,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:21,694 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 18:23:21,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:23:21,695 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1482540624, now seen corresponding path program 1 times [2021-11-25 18:23:21,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478924854] [2021-11-25 18:23:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:21,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:21,989 INFO 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 18:23:21,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:21,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478924854] [2021-11-25 18:23:21,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478924854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:21,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:21,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:23:21,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142806474] [2021-11-25 18:23:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:21,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:23:21,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:23:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:23:21,991 INFO L87 Difference]: Start difference. First operand 6920 states and 8851 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 18:23:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:25,735 INFO L93 Difference]: Finished difference Result 16500 states and 22084 transitions. [2021-11-25 18:23:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:23:25,735 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 18:23:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:25,748 INFO L225 Difference]: With dead ends: 16500 [2021-11-25 18:23:25,749 INFO L226 Difference]: Without dead ends: 14854 [2021-11-25 18:23:25,752 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 18:23:25,752 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 9171 mSDsluCounter, 5607 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9171 SdHoareTripleChecker+Valid, 7347 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:25,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9171 Valid, 7347 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:23:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14854 states. [2021-11-25 18:23:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 6684. [2021-11-25 18:23:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6684 states, 6677 states have (on average 1.2790175228395986) internal successors, (8540), 6683 states have internal predecessors, (8540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 8540 transitions. [2021-11-25 18:23:26,596 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 8540 transitions. Word has length 70 [2021-11-25 18:23:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:26,596 INFO L470 AbstractCegarLoop]: Abstraction has 6684 states and 8540 transitions. [2021-11-25 18:23:26,597 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 18:23:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 8540 transitions. [2021-11-25 18:23:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:23:26,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:26,601 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 18:23:26,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:23:26,601 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1937924781, now seen corresponding path program 1 times [2021-11-25 18:23:26,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:26,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551903269] [2021-11-25 18:23:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:26,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:26,723 INFO 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 18:23:26,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:26,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551903269] [2021-11-25 18:23:26,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551903269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:26,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:26,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:23:26,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291431230] [2021-11-25 18:23:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:26,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:23:26,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:23:26,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:23:26,726 INFO L87 Difference]: Start difference. First operand 6684 states and 8540 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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 18:23:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:29,837 INFO L93 Difference]: Finished difference Result 11861 states and 15635 transitions. [2021-11-25 18:23:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:23:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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 18:23:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:29,849 INFO L225 Difference]: With dead ends: 11861 [2021-11-25 18:23:29,849 INFO L226 Difference]: Without dead ends: 10020 [2021-11-25 18:23:29,853 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 18:23:29,854 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 6520 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6520 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:29,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6520 Valid, 3024 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:23:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10020 states. [2021-11-25 18:23:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10020 to 6684. [2021-11-25 18:23:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6684 states, 6677 states have (on average 1.2788677549797813) internal successors, (8539), 6683 states have internal predecessors, (8539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 8539 transitions. [2021-11-25 18:23:30,717 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 8539 transitions. Word has length 70 [2021-11-25 18:23:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:30,718 INFO L470 AbstractCegarLoop]: Abstraction has 6684 states and 8539 transitions. [2021-11-25 18:23:30,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 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 18:23:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 8539 transitions. [2021-11-25 18:23:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:23:30,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:30,724 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 18:23:30,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:23:30,725 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:30,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1770122057, now seen corresponding path program 1 times [2021-11-25 18:23:30,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:30,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128809951] [2021-11-25 18:23:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:30,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:30,799 INFO 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 18:23:30,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:30,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128809951] [2021-11-25 18:23:30,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128809951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:30,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:30,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:30,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743146319] [2021-11-25 18:23:30,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:30,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:30,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:30,802 INFO L87 Difference]: Start difference. First operand 6684 states and 8539 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 18:23:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:32,049 INFO L93 Difference]: Finished difference Result 10415 states and 13443 transitions. [2021-11-25 18:23:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:32,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 18:23:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:32,055 INFO L225 Difference]: With dead ends: 10415 [2021-11-25 18:23:32,055 INFO L226 Difference]: Without dead ends: 6125 [2021-11-25 18:23:32,059 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 18:23:32,060 INFO L933 BasicCegarLoop]: 1322 mSDtfsCounter, 1316 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:32,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 1730 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:32,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2021-11-25 18:23:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6121. [2021-11-25 18:23:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6121 states, 6117 states have (on average 1.2893575282000982) internal successors, (7887), 6120 states have internal predecessors, (7887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 7887 transitions. [2021-11-25 18:23:33,050 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 7887 transitions. Word has length 70 [2021-11-25 18:23:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:33,050 INFO L470 AbstractCegarLoop]: Abstraction has 6121 states and 7887 transitions. [2021-11-25 18:23:33,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 18:23:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 7887 transitions. [2021-11-25 18:23:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 18:23:33,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:33,054 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 18:23:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:23:33,055 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:33,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1009351057, now seen corresponding path program 1 times [2021-11-25 18:23:33,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657228270] [2021-11-25 18:23:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:33,130 INFO 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 18:23:33,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:33,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657228270] [2021-11-25 18:23:33,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657228270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:33,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:33,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467157276] [2021-11-25 18:23:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:33,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:33,132 INFO L87 Difference]: Start difference. First operand 6121 states and 7887 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 18:23:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:35,061 INFO L93 Difference]: Finished difference Result 12845 states and 16757 transitions. [2021-11-25 18:23:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:35,061 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 18:23:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:35,069 INFO L225 Difference]: With dead ends: 12845 [2021-11-25 18:23:35,069 INFO L226 Difference]: Without dead ends: 9261 [2021-11-25 18:23:35,074 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 18:23:35,074 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 692 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:35,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 2692 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9261 states. [2021-11-25 18:23:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9261 to 9253. [2021-11-25 18:23:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9253 states, 9249 states have (on average 1.2725700075683857) internal successors, (11770), 9252 states have internal predecessors, (11770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9253 states to 9253 states and 11770 transitions. [2021-11-25 18:23:36,701 INFO L78 Accepts]: Start accepts. Automaton has 9253 states and 11770 transitions. Word has length 71 [2021-11-25 18:23:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:36,701 INFO L470 AbstractCegarLoop]: Abstraction has 9253 states and 11770 transitions. [2021-11-25 18:23:36,701 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 18:23:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 9253 states and 11770 transitions. [2021-11-25 18:23:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 18:23:36,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:36,709 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 18:23:36,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:23:36,710 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1569860402, now seen corresponding path program 1 times [2021-11-25 18:23:36,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:36,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998246224] [2021-11-25 18:23:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:36,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:36,776 INFO 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 18:23:36,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998246224] [2021-11-25 18:23:36,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998246224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:36,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:36,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:36,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392940387] [2021-11-25 18:23:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:36,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:36,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:36,779 INFO L87 Difference]: Start difference. First operand 9253 states and 11770 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 18:23:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:38,743 INFO L93 Difference]: Finished difference Result 16079 states and 20727 transitions. [2021-11-25 18:23:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:38,744 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 18:23:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:38,751 INFO L225 Difference]: With dead ends: 16079 [2021-11-25 18:23:38,751 INFO L226 Difference]: Without dead ends: 8403 [2021-11-25 18:23:38,757 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 18:23:38,757 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 936 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:38,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 1707 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8403 states. [2021-11-25 18:23:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8403 to 7182. [2021-11-25 18:23:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7178 states have (on average 1.28071886319309) internal successors, (9193), 7181 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 9193 transitions. [2021-11-25 18:23:40,188 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 9193 transitions. Word has length 72 [2021-11-25 18:23:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:40,189 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 9193 transitions. [2021-11-25 18:23:40,189 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 18:23:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 9193 transitions. [2021-11-25 18:23:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:23:40,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:40,193 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 18:23:40,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:23:40,194 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -104672906, now seen corresponding path program 1 times [2021-11-25 18:23:40,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62397438] [2021-11-25 18:23:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:40,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:40,328 INFO 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 18:23:40,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:40,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62397438] [2021-11-25 18:23:40,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62397438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:40,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:40,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:23:40,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706337789] [2021-11-25 18:23:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:40,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:40,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:40,331 INFO L87 Difference]: Start difference. First operand 7182 states and 9193 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:45,128 INFO L93 Difference]: Finished difference Result 15642 states and 20571 transitions. [2021-11-25 18:23:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:23:45,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:45,141 INFO L225 Difference]: With dead ends: 15642 [2021-11-25 18:23:45,141 INFO L226 Difference]: Without dead ends: 13382 [2021-11-25 18:23:45,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:23:45,146 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 2436 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:45,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 3720 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:23:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2021-11-25 18:23:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 7182. [2021-11-25 18:23:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7178 states have (on average 1.2804402340484815) internal successors, (9191), 7181 states have internal predecessors, (9191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 9191 transitions. [2021-11-25 18:23:46,645 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 9191 transitions. Word has length 73 [2021-11-25 18:23:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:46,645 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 9191 transitions. [2021-11-25 18:23:46,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 9191 transitions. [2021-11-25 18:23:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:23:46,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:46,650 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 18:23:46,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:23:46,650 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1330912566, now seen corresponding path program 1 times [2021-11-25 18:23:46,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:46,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075066677] [2021-11-25 18:23:46,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:46,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:46,816 INFO 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 18:23:46,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075066677] [2021-11-25 18:23:46,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075066677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:46,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:46,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:23:46,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551942690] [2021-11-25 18:23:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:46,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:46,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:46,819 INFO L87 Difference]: Start difference. First operand 7182 states and 9191 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:50,961 INFO L93 Difference]: Finished difference Result 11298 states and 14725 transitions. [2021-11-25 18:23:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:23:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:50,971 INFO L225 Difference]: With dead ends: 11298 [2021-11-25 18:23:50,971 INFO L226 Difference]: Without dead ends: 10470 [2021-11-25 18:23:50,974 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 18:23:50,975 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 2714 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:50,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2714 Valid, 3290 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:23:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10470 states. [2021-11-25 18:23:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10470 to 7182. [2021-11-25 18:23:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7178 states have (on average 1.2801616049038729) internal successors, (9189), 7181 states have internal predecessors, (9189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 9189 transitions. [2021-11-25 18:23:52,479 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 9189 transitions. Word has length 73 [2021-11-25 18:23:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:52,479 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 9189 transitions. [2021-11-25 18:23:52,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 9189 transitions. [2021-11-25 18:23:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:23:52,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:52,483 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 18:23:52,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:23:52,483 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash -24596204, now seen corresponding path program 1 times [2021-11-25 18:23:52,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:52,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684522842] [2021-11-25 18:23:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:52,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:52,625 INFO 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 18:23:52,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:52,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684522842] [2021-11-25 18:23:52,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684522842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:52,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:52,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:23:52,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699602412] [2021-11-25 18:23:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:52,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:52,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:52,627 INFO L87 Difference]: Start difference. First operand 7182 states and 9189 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:57,651 INFO L93 Difference]: Finished difference Result 14262 states and 18546 transitions. [2021-11-25 18:23:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:23:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:57,665 INFO L225 Difference]: With dead ends: 14262 [2021-11-25 18:23:57,666 INFO L226 Difference]: Without dead ends: 12966 [2021-11-25 18:23:57,670 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 18:23:57,670 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 3846 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3846 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:57,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3846 Valid, 3643 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 18:23:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2021-11-25 18:23:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 7182. [2021-11-25 18:23:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7182 states, 7178 states have (on average 1.2798829757592645) internal successors, (9187), 7181 states have internal predecessors, (9187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 9187 transitions. [2021-11-25 18:23:59,248 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 9187 transitions. Word has length 73 [2021-11-25 18:23:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:59,248 INFO L470 AbstractCegarLoop]: Abstraction has 7182 states and 9187 transitions. [2021-11-25 18:23:59,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 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 18:23:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 9187 transitions. [2021-11-25 18:23:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 18:23:59,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:59,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:59,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:23:59,251 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:23:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1202956632, now seen corresponding path program 1 times [2021-11-25 18:23:59,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899730642] [2021-11-25 18:23:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:59,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:59,351 INFO 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 18:23:59,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899730642] [2021-11-25 18:23:59,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899730642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:59,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:59,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622232675] [2021-11-25 18:23:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:59,354 INFO L87 Difference]: Start difference. First operand 7182 states and 9187 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:02,041 INFO L93 Difference]: Finished difference Result 15631 states and 20487 transitions. [2021-11-25 18:24:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:02,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-25 18:24:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:02,051 INFO L225 Difference]: With dead ends: 15631 [2021-11-25 18:24:02,052 INFO L226 Difference]: Without dead ends: 11207 [2021-11-25 18:24:02,057 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 18:24:02,058 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 700 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:02,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 2331 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:24:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11207 states. [2021-11-25 18:24:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11207 to 11203. [2021-11-25 18:24:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11203 states, 11199 states have (on average 1.2878828466827394) internal successors, (14423), 11202 states have internal predecessors, (14423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11203 states to 11203 states and 14423 transitions. [2021-11-25 18:24:04,651 INFO L78 Accepts]: Start accepts. Automaton has 11203 states and 14423 transitions. Word has length 74 [2021-11-25 18:24:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:04,651 INFO L470 AbstractCegarLoop]: Abstraction has 11203 states and 14423 transitions. [2021-11-25 18:24:04,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11203 states and 14423 transitions. [2021-11-25 18:24:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 18:24:04,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:04,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:24:04,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 18:24:04,655 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:24:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1151506913, now seen corresponding path program 1 times [2021-11-25 18:24:04,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869992428] [2021-11-25 18:24:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:04,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:04,729 INFO 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 18:24:04,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:04,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869992428] [2021-11-25 18:24:04,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869992428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:04,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:04,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:04,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231757863] [2021-11-25 18:24:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:04,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:04,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:04,732 INFO L87 Difference]: Start difference. First operand 11203 states and 14423 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:08,170 INFO L93 Difference]: Finished difference Result 20185 states and 26706 transitions. [2021-11-25 18:24:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-25 18:24:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:08,182 INFO L225 Difference]: With dead ends: 20185 [2021-11-25 18:24:08,182 INFO L226 Difference]: Without dead ends: 12755 [2021-11-25 18:24:08,189 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 18:24:08,190 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 713 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:08,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 1783 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:24:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12755 states. [2021-11-25 18:24:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12755 to 10033. [2021-11-25 18:24:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 10029 states have (on average 1.2945458171303221) internal successors, (12983), 10032 states have internal predecessors, (12983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 12983 transitions. [2021-11-25 18:24:10,786 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 12983 transitions. Word has length 74 [2021-11-25 18:24:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:10,787 INFO L470 AbstractCegarLoop]: Abstraction has 10033 states and 12983 transitions. [2021-11-25 18:24:10,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 12983 transitions. [2021-11-25 18:24:10,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 18:24:10,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:10,790 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] [2021-11-25 18:24:10,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:24:10,790 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:24:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1237286764, now seen corresponding path program 1 times [2021-11-25 18:24:10,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:10,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401465878] [2021-11-25 18:24:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:10,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:11,212 INFO 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 18:24:11,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:11,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401465878] [2021-11-25 18:24:11,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401465878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:11,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:11,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:24:11,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471812064] [2021-11-25 18:24:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:11,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:24:11,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:24:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:24:11,214 INFO L87 Difference]: Start difference. First operand 10033 states and 12983 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:21,249 INFO L93 Difference]: Finished difference Result 26584 states and 34844 transitions. [2021-11-25 18:24:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:24:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-25 18:24:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:21,281 INFO L225 Difference]: With dead ends: 26584 [2021-11-25 18:24:21,281 INFO L226 Difference]: Without dead ends: 25494 [2021-11-25 18:24:21,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-11-25 18:24:21,286 INFO L933 BasicCegarLoop]: 1458 mSDtfsCounter, 6243 mSDsluCounter, 9827 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6243 SdHoareTripleChecker+Valid, 11088 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:21,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6243 Valid, 11088 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:24:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25494 states. [2021-11-25 18:24:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25494 to 9993. [2021-11-25 18:24:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9993 states, 9990 states have (on average 1.2942942942942943) internal successors, (12930), 9992 states have internal predecessors, (12930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9993 states to 9993 states and 12930 transitions. [2021-11-25 18:24:24,120 INFO L78 Accepts]: Start accepts. Automaton has 9993 states and 12930 transitions. Word has length 74 [2021-11-25 18:24:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:24,121 INFO L470 AbstractCegarLoop]: Abstraction has 9993 states and 12930 transitions. [2021-11-25 18:24:24,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 9993 states and 12930 transitions. [2021-11-25 18:24:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 18:24:24,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:24,124 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 18:24:24,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 18:24:24,125 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:24:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2115466575, now seen corresponding path program 1 times [2021-11-25 18:24:24,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:24,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855007692] [2021-11-25 18:24:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:24,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:24,192 INFO 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 18:24:24,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:24,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855007692] [2021-11-25 18:24:24,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855007692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:24,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:24,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:24,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076219818] [2021-11-25 18:24:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:24,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:24,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:24,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:24,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:24,195 INFO L87 Difference]: Start difference. First operand 9993 states and 12930 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 18:24:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:27,365 INFO L93 Difference]: Finished difference Result 18566 states and 24338 transitions. [2021-11-25 18:24:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:27,366 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 18:24:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:27,375 INFO L225 Difference]: With dead ends: 18566 [2021-11-25 18:24:27,375 INFO L226 Difference]: Without dead ends: 9966 [2021-11-25 18:24:27,383 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 18:24:27,384 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 1068 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:27,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 1584 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:24:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2021-11-25 18:24:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 8755. [2021-11-25 18:24:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8752 states have (on average 1.305073126142596) internal successors, (11422), 8754 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 11422 transitions. [2021-11-25 18:24:29,974 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 11422 transitions. Word has length 75 [2021-11-25 18:24:29,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:29,975 INFO L470 AbstractCegarLoop]: Abstraction has 8755 states and 11422 transitions. [2021-11-25 18:24:29,975 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 18:24:29,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 11422 transitions. [2021-11-25 18:24:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 18:24:29,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:29,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:24:29,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 18:24:29,978 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:24:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1506470067, now seen corresponding path program 1 times [2021-11-25 18:24:29,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:29,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697556102] [2021-11-25 18:24:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:29,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:30,335 INFO 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 18:24:30,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697556102] [2021-11-25 18:24:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697556102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:30,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:30,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:24:30,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730103994] [2021-11-25 18:24:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:30,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:24:30,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:24:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:24:30,337 INFO L87 Difference]: Start difference. First operand 8755 states and 11422 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:40,734 INFO L93 Difference]: Finished difference Result 25501 states and 33442 transitions. [2021-11-25 18:24:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 18:24:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 18:24:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:40,759 INFO L225 Difference]: With dead ends: 25501 [2021-11-25 18:24:40,759 INFO L226 Difference]: Without dead ends: 24401 [2021-11-25 18:24:40,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2021-11-25 18:24:40,765 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 7157 mSDsluCounter, 10754 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7157 SdHoareTripleChecker+Valid, 12070 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:40,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7157 Valid, 12070 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:24:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24401 states. [2021-11-25 18:24:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24401 to 8705. [2021-11-25 18:24:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8705 states, 8703 states have (on average 1.3054119269217512) internal successors, (11361), 8704 states have internal predecessors, (11361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8705 states to 8705 states and 11361 transitions. [2021-11-25 18:24:43,497 INFO L78 Accepts]: Start accepts. Automaton has 8705 states and 11361 transitions. Word has length 76 [2021-11-25 18:24:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:43,497 INFO L470 AbstractCegarLoop]: Abstraction has 8705 states and 11361 transitions. [2021-11-25 18:24:43,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8705 states and 11361 transitions. [2021-11-25 18:24:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 18:24:43,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:43,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:24:43,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 18:24:43,500 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:24:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1520723396, now seen corresponding path program 1 times [2021-11-25 18:24:43,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604334160] [2021-11-25 18:24:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:43,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:43,805 INFO 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 18:24:43,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:43,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604334160] [2021-11-25 18:24:43,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604334160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:43,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:43,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:24:43,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512847475] [2021-11-25 18:24:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:43,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:24:43,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:24:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:24:43,807 INFO L87 Difference]: Start difference. First operand 8705 states and 11361 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:50,239 INFO L93 Difference]: Finished difference Result 15996 states and 20934 transitions. [2021-11-25 18:24:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:24:50,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-25 18:24:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:50,255 INFO L225 Difference]: With dead ends: 15996 [2021-11-25 18:24:50,255 INFO L226 Difference]: Without dead ends: 15300 [2021-11-25 18:24:50,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-25 18:24:50,260 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 5548 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:50,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5548 Valid, 6236 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:24:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15300 states. [2021-11-25 18:24:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15300 to 8699. [2021-11-25 18:24:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8699 states, 8698 states have (on average 1.3051276155438032) internal successors, (11352), 8698 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 11352 transitions. [2021-11-25 18:24:53,060 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 11352 transitions. Word has length 76 [2021-11-25 18:24:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:53,060 INFO L470 AbstractCegarLoop]: Abstraction has 8699 states and 11352 transitions. [2021-11-25 18:24:53,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 11352 transitions. [2021-11-25 18:24:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 18:24:53,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:53,064 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] [2021-11-25 18:24:53,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 18:24:53,065 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 18:24:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash -793913692, now seen corresponding path program 1 times [2021-11-25 18:24:53,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:53,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637953530] [2021-11-25 18:24:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:53,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:53,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637953530] [2021-11-25 18:24:53,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637953530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:53,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:53,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:24:53,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116772026] [2021-11-25 18:24:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:53,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:24:53,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:53,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:24:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:24:53,180 INFO L87 Difference]: Start difference. First operand 8699 states and 11352 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:57,539 INFO L93 Difference]: Finished difference Result 19107 states and 25372 transitions. [2021-11-25 18:24:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:24:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 18:24:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:57,552 INFO L225 Difference]: With dead ends: 19107 [2021-11-25 18:24:57,552 INFO L226 Difference]: Without dead ends: 12175 [2021-11-25 18:24:57,558 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 18:24:57,559 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 2849 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:57,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2849 Valid, 1594 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:24:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12175 states. [2021-11-25 18:25:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12175 to 10726. [2021-11-25 18:25:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10726 states, 10725 states have (on average 1.3073193473193474) internal successors, (14021), 10725 states have internal predecessors, (14021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10726 states to 10726 states and 14021 transitions. [2021-11-25 18:25:01,336 INFO L78 Accepts]: Start accepts. Automaton has 10726 states and 14021 transitions. Word has length 77 [2021-11-25 18:25:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:01,336 INFO L470 AbstractCegarLoop]: Abstraction has 10726 states and 14021 transitions. [2021-11-25 18:25:01,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10726 states and 14021 transitions. [2021-11-25 18:25:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 18:25:01,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:01,339 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 18:25:01,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 18:25:01,339 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:25:01,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1006902671, now seen corresponding path program 1 times [2021-11-25 18:25:01,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:01,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232958989] [2021-11-25 18:25:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:01,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:01,427 INFO 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 18:25:01,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232958989] [2021-11-25 18:25:01,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232958989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:01,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:01,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:01,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092312146] [2021-11-25 18:25:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:01,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:01,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:01,429 INFO L87 Difference]: Start difference. First operand 10726 states and 14021 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 18:25:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:06,978 INFO L93 Difference]: Finished difference Result 24534 states and 32528 transitions. [2021-11-25 18:25:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:06,979 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 18:25:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:06,994 INFO L225 Difference]: With dead ends: 24534 [2021-11-25 18:25:06,994 INFO L226 Difference]: Without dead ends: 15668 [2021-11-25 18:25:07,001 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 18:25:07,001 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 726 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:07,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1493 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:25:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15668 states. [2021-11-25 18:25:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15668 to 14706. [2021-11-25 18:25:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14706 states, 14705 states have (on average 1.3047262835770146) internal successors, (19186), 14705 states have internal predecessors, (19186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14706 states to 14706 states and 19186 transitions. [2021-11-25 18:25:12,400 INFO L78 Accepts]: Start accepts. Automaton has 14706 states and 19186 transitions. Word has length 78 [2021-11-25 18:25:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:12,401 INFO L470 AbstractCegarLoop]: Abstraction has 14706 states and 19186 transitions. [2021-11-25 18:25:12,401 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 18:25:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 14706 states and 19186 transitions. [2021-11-25 18:25:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 18:25:12,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:12,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:12,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 18:25:12,403 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:25:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -858707611, now seen corresponding path program 1 times [2021-11-25 18:25:12,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:12,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537428246] [2021-11-25 18:25:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:12,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:12,477 INFO 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 18:25:12,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:12,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537428246] [2021-11-25 18:25:12,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537428246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:12,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:12,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:12,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659583670] [2021-11-25 18:25:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:12,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:12,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:12,480 INFO L87 Difference]: Start difference. First operand 14706 states and 19186 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:20,371 INFO L93 Difference]: Finished difference Result 34660 states and 45730 transitions. [2021-11-25 18:25:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:20,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 18:25:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:20,395 INFO L225 Difference]: With dead ends: 34660 [2021-11-25 18:25:20,395 INFO L226 Difference]: Without dead ends: 22018 [2021-11-25 18:25:20,404 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 18:25:20,404 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 619 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:20,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1572 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:25:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22018 states. [2021-11-25 18:25:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22018 to 20578. [2021-11-25 18:25:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20578 states, 20577 states have (on average 1.2989259853234194) internal successors, (26728), 20577 states have internal predecessors, (26728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20578 states to 20578 states and 26728 transitions. [2021-11-25 18:25:27,734 INFO L78 Accepts]: Start accepts. Automaton has 20578 states and 26728 transitions. Word has length 79 [2021-11-25 18:25:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:27,735 INFO L470 AbstractCegarLoop]: Abstraction has 20578 states and 26728 transitions. [2021-11-25 18:25:27,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 20578 states and 26728 transitions. [2021-11-25 18:25:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 18:25:27,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:27,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:25:27,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 18:25:27,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-25 18:25:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 756660939, now seen corresponding path program 1 times [2021-11-25 18:25:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:27,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308616001] [2021-11-25 18:25:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:27,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:27,805 INFO 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 18:25:27,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:27,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308616001] [2021-11-25 18:25:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308616001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:27,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:25:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230681499] [2021-11-25 18:25:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:25:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:25:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:25:27,807 INFO L87 Difference]: Start difference. First operand 20578 states and 26728 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 18:25:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:38,561 INFO L93 Difference]: Finished difference Result 48851 states and 64051 transitions. [2021-11-25 18:25:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:25:38,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 18:25:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:38,598 INFO L225 Difference]: With dead ends: 48851 [2021-11-25 18:25:38,598 INFO L226 Difference]: Without dead ends: 30855 [2021-11-25 18:25:38,613 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 18:25:38,614 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 485 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:38,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1664 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:25:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30855 states. [2021-11-25 18:25:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30855 to 28757. [2021-11-25 18:25:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28757 states, 28756 states have (on average 1.2909305883989428) internal successors, (37122), 28756 states have internal predecessors, (37122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:25:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28757 states to 28757 states and 37122 transitions. [2021-11-25 18:25:48,784 INFO L78 Accepts]: Start accepts. Automaton has 28757 states and 37122 transitions. Word has length 82 [2021-11-25 18:25:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:48,784 INFO L470 AbstractCegarLoop]: Abstraction has 28757 states and 37122 transitions. [2021-11-25 18:25:48,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 18:25:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28757 states and 37122 transitions. [2021-11-25 18:25:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 18:25:48,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:48,787 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 18:25:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 18:25:48,787 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 18:25:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1977270907, now seen corresponding path program 1 times [2021-11-25 18:25:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:48,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989300409] [2021-11-25 18:25:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:48,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:48,935 INFO 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 18:25:48,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:48,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989300409] [2021-11-25 18:25:48,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989300409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:48,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:25:48,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:25:48,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979065576] [2021-11-25 18:25:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:48,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:25:48,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:25:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:25:48,937 INFO L87 Difference]: Start difference. First operand 28757 states and 37122 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 18:26:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:26:17,652 INFO L93 Difference]: Finished difference Result 71639 states and 92047 transitions. [2021-11-25 18:26:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 18:26:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 18:26:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:26:17,748 INFO L225 Difference]: With dead ends: 71639 [2021-11-25 18:26:17,749 INFO L226 Difference]: Without dead ends: 71637 [2021-11-25 18:26:17,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:26:17,761 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 5155 mSDsluCounter, 5113 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:26:17,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5155 Valid, 6308 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:26:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71637 states. [2021-11-25 18:26:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71637 to 31425. [2021-11-25 18:26:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31425 states, 31424 states have (on average 1.2871690427698574) internal successors, (40448), 31424 states have internal predecessors, (40448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:26:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31425 states to 31425 states and 40448 transitions. [2021-11-25 18:26:30,519 INFO L78 Accepts]: Start accepts. Automaton has 31425 states and 40448 transitions. Word has length 87 [2021-11-25 18:26:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:26:30,519 INFO L470 AbstractCegarLoop]: Abstraction has 31425 states and 40448 transitions. [2021-11-25 18:26:30,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 18:26:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 31425 states and 40448 transitions. [2021-11-25 18:26:30,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 18:26:30,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:26:30,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:26:30,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 18:26:30,524 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 18:26:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:26:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1655454424, now seen corresponding path program 1 times [2021-11-25 18:26:30,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:26:30,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949829661] [2021-11-25 18:26:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:26:30,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:26:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:30,684 INFO 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 18:26:30,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:26:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949829661] [2021-11-25 18:26:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949829661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:30,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:26:30,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:26:30,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304477038] [2021-11-25 18:26:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:30,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:26:30,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:26:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:26:30,686 INFO L87 Difference]: Start difference. First operand 31425 states and 40448 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:27:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:00,363 INFO L93 Difference]: Finished difference Result 69976 states and 89977 transitions. [2021-11-25 18:27:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:27:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-25 18:27:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:00,455 INFO L225 Difference]: With dead ends: 69976 [2021-11-25 18:27:00,455 INFO L226 Difference]: Without dead ends: 69974 [2021-11-25 18:27:00,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:27:00,468 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 4393 mSDsluCounter, 4752 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4393 SdHoareTripleChecker+Valid, 5936 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:00,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4393 Valid, 5936 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:27:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69974 states.