/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:17:14,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:17:14,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:17:15,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:17:15,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:17:15,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:17:15,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:17:15,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:17:15,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:17:15,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:17:15,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:17:15,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:17:15,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:17:15,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:17:15,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:17:15,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:17:15,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:17:15,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:17:15,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:17:15,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:17:15,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:17:15,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:17:15,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:17:15,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:17:15,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:17:15,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:17:15,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:17:15,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:17:15,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:17:15,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:17:15,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:17:15,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:17:15,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:17:15,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:17:15,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:17:15,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:17:15,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:17:15,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:17:15,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:17:15,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:17:15,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:17:15,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:17:15,115 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:17:15,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:17:15,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:17:15,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:17:15,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:17:15,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:17:15,117 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:17:15,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:17:15,117 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:17:15,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:17:15,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:17:15,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:17:15,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:17:15,119 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:17:15,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:17:15,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:17:15,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:17:15,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:17:15,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:17:15,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:17:15,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:17:15,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:17:15,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:17:15,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:17:15,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:17:15,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:17:15,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:17:15,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:17:15,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:17:15,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:17:15,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:17:15,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:17:15,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:17:15,388 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:17:15,389 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:17:15,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:17:16,478 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:17:17,049 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:17:17,050 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:17:17,113 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f1494212/bf30013809754330868166881402394f/FLAGa9d3dc510 [2023-04-03 03:17:17,130 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f1494212/bf30013809754330868166881402394f [2023-04-03 03:17:17,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:17:17,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:17:17,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:17:17,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:17:17,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:17:17,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:17:17" (1/1) ... [2023-04-03 03:17:17,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5cd11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:17, skipping insertion in model container [2023-04-03 03:17:17,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:17:17" (1/1) ... [2023-04-03 03:17:17,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:17:17,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:17:18,581 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2023-04-03 03:17:18,765 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2023-04-03 03:17:18,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2023-04-03 03:17:18,893 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2023-04-03 03:17:18,914 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2023-04-03 03:17:18,925 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2023-04-03 03:17:18,937 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2023-04-03 03:17:19,139 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2023-04-03 03:17:19,214 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2023-04-03 03:17:19,252 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2023-04-03 03:17:19,274 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2023-04-03 03:17:19,286 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2023-04-03 03:17:19,297 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2023-04-03 03:17:19,377 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2023-04-03 03:17:19,415 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2023-04-03 03:17:19,436 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2023-04-03 03:17:19,447 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2023-04-03 03:17:19,458 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2023-04-03 03:17:19,499 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2023-04-03 03:17:19,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2023-04-03 03:17:19,530 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2023-04-03 03:17:19,541 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2023-04-03 03:17:19,554 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2023-04-03 03:17:19,565 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2023-04-03 03:17:19,577 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2023-04-03 03:17:19,587 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2023-04-03 03:17:19,599 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2023-04-03 03:17:19,609 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2023-04-03 03:17:19,621 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2023-04-03 03:17:19,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:17:19,696 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:17:20,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[147376,147389] [2023-04-03 03:17:20,203 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[216640,216653] [2023-04-03 03:17:20,275 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[251269,251282] [2023-04-03 03:17:20,311 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[268618,268631] [2023-04-03 03:17:20,329 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[277293,277306] [2023-04-03 03:17:20,339 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[281602,281615] [2023-04-03 03:17:20,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[285742,285755] [2023-04-03 03:17:20,478 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[353833,353846] [2023-04-03 03:17:20,542 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[387694,387707] [2023-04-03 03:17:20,577 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[404802,404815] [2023-04-03 03:17:20,595 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[413481,413494] [2023-04-03 03:17:20,605 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[417791,417804] [2023-04-03 03:17:20,616 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[421932,421945] [2023-04-03 03:17:20,681 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[456014,456027] [2023-04-03 03:17:20,715 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[473125,473138] [2023-04-03 03:17:20,733 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[481792,481805] [2023-04-03 03:17:20,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[486086,486099] [2023-04-03 03:17:20,752 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[490211,490224] [2023-04-03 03:17:20,790 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[508509,508522] [2023-04-03 03:17:20,809 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[517152,517165] [2023-04-03 03:17:20,819 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[521446,521459] [2023-04-03 03:17:20,828 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[525571,525584] [2023-04-03 03:17:20,839 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[530444,530457] [2023-04-03 03:17:20,848 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[534605,534618] [2023-04-03 03:17:20,858 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[538899,538912] [2023-04-03 03:17:20,867 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[543024,543037] [2023-04-03 03:17:20,877 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[547518,547531] [2023-04-03 03:17:20,887 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[551659,551672] [2023-04-03 03:17:20,897 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[555964,555977] [2023-04-03 03:17:20,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:17:20,981 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:17:20,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20 WrapperNode [2023-04-03 03:17:20,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:17:20,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:17:20,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:17:20,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:17:20,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:20,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:17:21,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:17:21,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:17:21,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:17:21,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (1/1) ... [2023-04-03 03:17:21,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:17:21,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:17:21,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:17:21,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:17:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:17:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:17:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:17:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:17:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:17:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:17:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:17:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:17:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:17:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:17:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:17:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 03:17:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:17:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:17:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:17:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:17:22,106 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:17:22,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:17:29,609 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:17:30,573 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:17:30,574 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:17:30,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:17:30 BoogieIcfgContainer [2023-04-03 03:17:30,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:17:30,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:17:30,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:17:30,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:17:30,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:17:17" (1/3) ... [2023-04-03 03:17:30,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678fed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:17:30, skipping insertion in model container [2023-04-03 03:17:30,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:20" (2/3) ... [2023-04-03 03:17:30,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678fed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:17:30, skipping insertion in model container [2023-04-03 03:17:30,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:17:30" (3/3) ... [2023-04-03 03:17:30,590 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:17:30,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:17:30,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-04-03 03:17:30,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:17:30,743 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8988948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:17:30,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-04-03 03:17:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 4948 states, 4914 states have (on average 1.8164428164428164) internal successors, (8926), 4943 states have internal predecessors, (8926), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 03:17:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-03 03:17:30,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:30,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:30,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:30,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2080083028, now seen corresponding path program 1 times [2023-04-03 03:17:30,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:30,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443304310] [2023-04-03 03:17:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:31,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:31,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443304310] [2023-04-03 03:17:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443304310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:31,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347781264] [2023-04-03 03:17:31,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:31,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:31,832 INFO L87 Difference]: Start difference. First operand has 4948 states, 4914 states have (on average 1.8164428164428164) internal successors, (8926), 4943 states have internal predecessors, (8926), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:34,456 INFO L93 Difference]: Finished difference Result 5186 states and 9269 transitions. [2023-04-03 03:17:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:34,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-03 03:17:34,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:34,483 INFO L225 Difference]: With dead ends: 5186 [2023-04-03 03:17:34,483 INFO L226 Difference]: Without dead ends: 2803 [2023-04-03 03:17:34,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:34,505 INFO L413 NwaCegarLoop]: 2620 mSDtfsCounter, 14706 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14706 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14706 Valid, 2717 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 03:17:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2023-04-03 03:17:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2023-04-03 03:17:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2771 states have (on average 1.3009743774810538) internal successors, (3605), 2799 states have internal predecessors, (3605), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3608 transitions. [2023-04-03 03:17:34,737 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3608 transitions. Word has length 104 [2023-04-03 03:17:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:34,738 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 3608 transitions. [2023-04-03 03:17:34,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3608 transitions. [2023-04-03 03:17:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-03 03:17:34,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:34,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:34,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:17:34,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:34,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1428876429, now seen corresponding path program 1 times [2023-04-03 03:17:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403532753] [2023-04-03 03:17:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:35,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403532753] [2023-04-03 03:17:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403532753] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:35,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181531537] [2023-04-03 03:17:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:35,068 INFO L87 Difference]: Start difference. First operand 2803 states and 3608 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:36,604 INFO L93 Difference]: Finished difference Result 3575 states and 4626 transitions. [2023-04-03 03:17:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:36,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-03 03:17:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:36,613 INFO L225 Difference]: With dead ends: 3575 [2023-04-03 03:17:36,614 INFO L226 Difference]: Without dead ends: 2153 [2023-04-03 03:17:36,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:36,617 INFO L413 NwaCegarLoop]: 1263 mSDtfsCounter, 8388 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8388 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:36,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8388 Valid, 1278 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:17:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-04-03 03:17:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2023-04-03 03:17:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2121 states have (on average 1.3323903818953324) internal successors, (2826), 2149 states have internal predecessors, (2826), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2829 transitions. [2023-04-03 03:17:36,694 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2829 transitions. Word has length 104 [2023-04-03 03:17:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:36,694 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 2829 transitions. [2023-04-03 03:17:36,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2829 transitions. [2023-04-03 03:17:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-03 03:17:36,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:36,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:17:36,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:36,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 700235300, now seen corresponding path program 1 times [2023-04-03 03:17:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448344182] [2023-04-03 03:17:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:37,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:37,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448344182] [2023-04-03 03:17:37,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448344182] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:37,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:37,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637804329] [2023-04-03 03:17:37,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:37,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:37,018 INFO L87 Difference]: Start difference. First operand 2153 states and 2829 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:38,350 INFO L93 Difference]: Finished difference Result 2797 states and 3670 transitions. [2023-04-03 03:17:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-03 03:17:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:38,357 INFO L225 Difference]: With dead ends: 2797 [2023-04-03 03:17:38,357 INFO L226 Difference]: Without dead ends: 1703 [2023-04-03 03:17:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:38,360 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 6689 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6689 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:38,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6689 Valid, 1056 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2023-04-03 03:17:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2023-04-03 03:17:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1671 states have (on average 1.3542788749251944) internal successors, (2263), 1699 states have internal predecessors, (2263), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2266 transitions. [2023-04-03 03:17:38,451 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2266 transitions. Word has length 104 [2023-04-03 03:17:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:38,452 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2266 transitions. [2023-04-03 03:17:38,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2266 transitions. [2023-04-03 03:17:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:17:38,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:38,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:17:38,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:38,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1034312632, now seen corresponding path program 1 times [2023-04-03 03:17:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982628760] [2023-04-03 03:17:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:38,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:38,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982628760] [2023-04-03 03:17:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982628760] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:38,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:38,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754580005] [2023-04-03 03:17:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:38,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:38,790 INFO L87 Difference]: Start difference. First operand 1703 states and 2266 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:40,150 INFO L93 Difference]: Finished difference Result 2499 states and 3342 transitions. [2023-04-03 03:17:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:17:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:40,157 INFO L225 Difference]: With dead ends: 2499 [2023-04-03 03:17:40,158 INFO L226 Difference]: Without dead ends: 1639 [2023-04-03 03:17:40,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:40,162 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 6381 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:40,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 920 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2023-04-03 03:17:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2023-04-03 03:17:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1607 states have (on average 1.3627878033602987) internal successors, (2190), 1635 states have internal predecessors, (2190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2193 transitions. [2023-04-03 03:17:40,277 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2193 transitions. Word has length 105 [2023-04-03 03:17:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:40,277 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2193 transitions. [2023-04-03 03:17:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2193 transitions. [2023-04-03 03:17:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-03 03:17:40,282 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:40,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:40,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:17:40,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:40,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:40,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1163174163, now seen corresponding path program 1 times [2023-04-03 03:17:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:40,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78324732] [2023-04-03 03:17:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:40,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:40,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78324732] [2023-04-03 03:17:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78324732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:40,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794687217] [2023-04-03 03:17:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:40,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:40,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:40,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:40,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:40,593 INFO L87 Difference]: Start difference. First operand 1639 states and 2193 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:41,538 INFO L93 Difference]: Finished difference Result 2155 states and 2856 transitions. [2023-04-03 03:17:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-03 03:17:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:41,544 INFO L225 Difference]: With dead ends: 2155 [2023-04-03 03:17:41,544 INFO L226 Difference]: Without dead ends: 1321 [2023-04-03 03:17:41,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:41,547 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 5202 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:41,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 866 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-04-03 03:17:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1321. [2023-04-03 03:17:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1289 states have (on average 1.373933281613654) internal successors, (1771), 1317 states have internal predecessors, (1771), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1774 transitions. [2023-04-03 03:17:41,623 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1774 transitions. Word has length 106 [2023-04-03 03:17:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:41,624 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1774 transitions. [2023-04-03 03:17:41,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1774 transitions. [2023-04-03 03:17:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-03 03:17:41,628 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:41,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:41,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:17:41,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:41,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -400201819, now seen corresponding path program 1 times [2023-04-03 03:17:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755504724] [2023-04-03 03:17:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:41,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755504724] [2023-04-03 03:17:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755504724] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:41,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171344235] [2023-04-03 03:17:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:41,889 INFO L87 Difference]: Start difference. First operand 1321 states and 1774 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:42,586 INFO L93 Difference]: Finished difference Result 1709 states and 2260 transitions. [2023-04-03 03:17:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2023-04-03 03:17:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:42,590 INFO L225 Difference]: With dead ends: 1709 [2023-04-03 03:17:42,590 INFO L226 Difference]: Without dead ends: 1037 [2023-04-03 03:17:42,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:42,592 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 4042 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:42,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 732 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:17:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-03 03:17:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2023-04-03 03:17:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1005 states have (on average 1.381094527363184) internal successors, (1388), 1033 states have internal predecessors, (1388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1391 transitions. [2023-04-03 03:17:42,655 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1391 transitions. Word has length 107 [2023-04-03 03:17:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:42,655 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1391 transitions. [2023-04-03 03:17:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1391 transitions. [2023-04-03 03:17:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-03 03:17:42,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:42,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:17:42,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:42,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 685904030, now seen corresponding path program 1 times [2023-04-03 03:17:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702641862] [2023-04-03 03:17:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:42,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:42,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702641862] [2023-04-03 03:17:42,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702641862] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:42,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:42,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887019119] [2023-04-03 03:17:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:42,949 INFO L87 Difference]: Start difference. First operand 1037 states and 1391 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:43,971 INFO L93 Difference]: Finished difference Result 2099 states and 2823 transitions. [2023-04-03 03:17:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2023-04-03 03:17:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:43,978 INFO L225 Difference]: With dead ends: 2099 [2023-04-03 03:17:43,978 INFO L226 Difference]: Without dead ends: 1547 [2023-04-03 03:17:43,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:17:43,980 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 5370 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5370 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:43,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5370 Valid, 1141 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:17:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-04-03 03:17:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1445. [2023-04-03 03:17:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4154281670205238) internal successors, (2000), 1441 states have internal predecessors, (2000), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2003 transitions. [2023-04-03 03:17:44,108 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2003 transitions. Word has length 108 [2023-04-03 03:17:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:44,108 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2003 transitions. [2023-04-03 03:17:44,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2003 transitions. [2023-04-03 03:17:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:44,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:44,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:17:44,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:44,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -258493121, now seen corresponding path program 1 times [2023-04-03 03:17:44,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719834502] [2023-04-03 03:17:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:44,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719834502] [2023-04-03 03:17:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719834502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:44,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:44,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:17:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300170829] [2023-04-03 03:17:44,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:44,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:17:44,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:44,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:17:44,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:17:44,667 INFO L87 Difference]: Start difference. First operand 1445 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:46,105 INFO L93 Difference]: Finished difference Result 2423 states and 3220 transitions. [2023-04-03 03:17:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:17:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:17:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:46,113 INFO L225 Difference]: With dead ends: 2423 [2023-04-03 03:17:46,113 INFO L226 Difference]: Without dead ends: 1829 [2023-04-03 03:17:46,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:17:46,116 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 5810 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5810 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:46,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5810 Valid, 1467 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:17:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-04-03 03:17:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1445. [2023-04-03 03:17:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4147204529370134) internal successors, (1999), 1441 states have internal predecessors, (1999), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2002 transitions. [2023-04-03 03:17:46,261 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2002 transitions. Word has length 109 [2023-04-03 03:17:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:46,261 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2002 transitions. [2023-04-03 03:17:46,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2002 transitions. [2023-04-03 03:17:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:46,265 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:46,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:46,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:17:46,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:46,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash -207627036, now seen corresponding path program 1 times [2023-04-03 03:17:46,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:46,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992546077] [2023-04-03 03:17:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:47,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992546077] [2023-04-03 03:17:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992546077] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:47,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965166984] [2023-04-03 03:17:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:47,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:47,153 INFO L87 Difference]: Start difference. First operand 1445 states and 2002 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:49,654 INFO L93 Difference]: Finished difference Result 2538 states and 3418 transitions. [2023-04-03 03:17:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:17:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:49,663 INFO L225 Difference]: With dead ends: 2538 [2023-04-03 03:17:49,663 INFO L226 Difference]: Without dead ends: 2429 [2023-04-03 03:17:49,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:49,665 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 4282 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 4419 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4282 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:49,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4282 Valid, 4018 Invalid, 4440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4419 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 03:17:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-03 03:17:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1470. [2023-04-03 03:17:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1438 states have (on average 1.415855354659249) internal successors, (2036), 1466 states have internal predecessors, (2036), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2039 transitions. [2023-04-03 03:17:49,826 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2039 transitions. Word has length 109 [2023-04-03 03:17:49,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:49,826 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 2039 transitions. [2023-04-03 03:17:49,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:49,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2039 transitions. [2023-04-03 03:17:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:49,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:49,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:17:49,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:49,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash -904681461, now seen corresponding path program 1 times [2023-04-03 03:17:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954565522] [2023-04-03 03:17:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:50,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954565522] [2023-04-03 03:17:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954565522] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:50,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731084672] [2023-04-03 03:17:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:50,620 INFO L87 Difference]: Start difference. First operand 1470 states and 2039 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:53,108 INFO L93 Difference]: Finished difference Result 2540 states and 3420 transitions. [2023-04-03 03:17:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:53,108 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:17:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:53,117 INFO L225 Difference]: With dead ends: 2540 [2023-04-03 03:17:53,117 INFO L226 Difference]: Without dead ends: 2431 [2023-04-03 03:17:53,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:53,119 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 4458 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 4210 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 4234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:53,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4458 Valid, 3934 Invalid, 4234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4210 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 03:17:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-04-03 03:17:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1490. [2023-04-03 03:17:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1458 states have (on average 1.416323731138546) internal successors, (2065), 1486 states have internal predecessors, (2065), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2068 transitions. [2023-04-03 03:17:53,297 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2068 transitions. Word has length 109 [2023-04-03 03:17:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:53,298 INFO L495 AbstractCegarLoop]: Abstraction has 1490 states and 2068 transitions. [2023-04-03 03:17:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2068 transitions. [2023-04-03 03:17:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:53,300 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:53,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:17:53,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr24ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:53,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash -200780088, now seen corresponding path program 1 times [2023-04-03 03:17:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167405957] [2023-04-03 03:17:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:54,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167405957] [2023-04-03 03:17:54,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167405957] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:54,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:54,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:54,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710627387] [2023-04-03 03:17:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:54,084 INFO L87 Difference]: Start difference. First operand 1490 states and 2068 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:56,281 INFO L93 Difference]: Finished difference Result 2536 states and 3415 transitions. [2023-04-03 03:17:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:17:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:56,288 INFO L225 Difference]: With dead ends: 2536 [2023-04-03 03:17:56,288 INFO L226 Difference]: Without dead ends: 2427 [2023-04-03 03:17:56,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:56,290 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 7650 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7650 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 4151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:56,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7650 Valid, 3673 Invalid, 4151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:17:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2023-04-03 03:17:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1504. [2023-04-03 03:17:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1472 states have (on average 1.4164402173913044) internal successors, (2085), 1500 states have internal predecessors, (2085), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2088 transitions. [2023-04-03 03:17:56,500 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2088 transitions. Word has length 109 [2023-04-03 03:17:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:56,500 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2088 transitions. [2023-04-03 03:17:56,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2088 transitions. [2023-04-03 03:17:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:56,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:56,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:56,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:17:56,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:56,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash 758674528, now seen corresponding path program 1 times [2023-04-03 03:17:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:56,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829747369] [2023-04-03 03:17:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:57,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829747369] [2023-04-03 03:17:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829747369] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:57,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548221986] [2023-04-03 03:17:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:57,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:57,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:57,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:57,017 INFO L87 Difference]: Start difference. First operand 1504 states and 2088 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:58,422 INFO L93 Difference]: Finished difference Result 1859 states and 2561 transitions. [2023-04-03 03:17:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:17:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:58,428 INFO L225 Difference]: With dead ends: 1859 [2023-04-03 03:17:58,428 INFO L226 Difference]: Without dead ends: 1557 [2023-04-03 03:17:58,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:58,430 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 5575 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:58,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 2968 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:17:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2023-04-03 03:17:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1445. [2023-04-03 03:17:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.414012738853503) internal successors, (1998), 1441 states have internal predecessors, (1998), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2001 transitions. [2023-04-03 03:17:58,635 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2001 transitions. Word has length 109 [2023-04-03 03:17:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:58,636 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2001 transitions. [2023-04-03 03:17:58,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2001 transitions. [2023-04-03 03:17:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:58,639 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:58,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:58,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:17:58,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:58,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1134236611, now seen corresponding path program 1 times [2023-04-03 03:17:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375028254] [2023-04-03 03:17:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:59,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375028254] [2023-04-03 03:17:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375028254] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:59,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574750535] [2023-04-03 03:17:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:59,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:59,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:59,208 INFO L87 Difference]: Start difference. First operand 1445 states and 2001 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:00,901 INFO L93 Difference]: Finished difference Result 2279 states and 3074 transitions. [2023-04-03 03:18:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-03 03:18:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:00,910 INFO L225 Difference]: With dead ends: 2279 [2023-04-03 03:18:00,910 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:18:00,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:00,911 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 5651 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5651 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:00,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5651 Valid, 2845 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:18:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:18:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.413305024769993) internal successors, (1997), 1441 states have internal predecessors, (1997), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2000 transitions. [2023-04-03 03:18:01,104 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2000 transitions. Word has length 109 [2023-04-03 03:18:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:01,105 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2000 transitions. [2023-04-03 03:18:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 8 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2000 transitions. [2023-04-03 03:18:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:01,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:01,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:18:01,108 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:01,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1284195457, now seen corresponding path program 1 times [2023-04-03 03:18:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122580289] [2023-04-03 03:18:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:01,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:01,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122580289] [2023-04-03 03:18:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122580289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:01,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:01,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353887041] [2023-04-03 03:18:01,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:01,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:01,622 INFO L87 Difference]: Start difference. First operand 1445 states and 2000 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:03,372 INFO L93 Difference]: Finished difference Result 2479 states and 3382 transitions. [2023-04-03 03:18:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:03,381 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:18:03,381 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:18:03,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:03,382 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 7564 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7564 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:03,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7564 Valid, 3095 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:18:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:18:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4125973106864826) internal successors, (1996), 1441 states have internal predecessors, (1996), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1999 transitions. [2023-04-03 03:18:03,614 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1999 transitions. Word has length 111 [2023-04-03 03:18:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:03,615 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1999 transitions. [2023-04-03 03:18:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1999 transitions. [2023-04-03 03:18:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:03,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:03,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:03,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:18:03,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:03,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1981249882, now seen corresponding path program 1 times [2023-04-03 03:18:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018455405] [2023-04-03 03:18:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:04,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018455405] [2023-04-03 03:18:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018455405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:04,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:04,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:04,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349092102] [2023-04-03 03:18:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:04,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:04,104 INFO L87 Difference]: Start difference. First operand 1445 states and 1999 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:05,793 INFO L93 Difference]: Finished difference Result 2383 states and 3212 transitions. [2023-04-03 03:18:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:05,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:05,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:05,798 INFO L225 Difference]: With dead ends: 2383 [2023-04-03 03:18:05,799 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:18:05,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:05,800 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 7399 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7399 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:05,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7399 Valid, 2880 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:18:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:18:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4118895966029723) internal successors, (1995), 1441 states have internal predecessors, (1995), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1998 transitions. [2023-04-03 03:18:05,985 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1998 transitions. Word has length 111 [2023-04-03 03:18:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:05,985 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1998 transitions. [2023-04-03 03:18:05,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1998 transitions. [2023-04-03 03:18:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:05,988 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:05,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:05,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:18:05,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr24ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:05,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1277348509, now seen corresponding path program 1 times [2023-04-03 03:18:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773608711] [2023-04-03 03:18:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:06,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773608711] [2023-04-03 03:18:06,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773608711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:06,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:06,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:06,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19145498] [2023-04-03 03:18:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:06,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:06,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:06,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:06,459 INFO L87 Difference]: Start difference. First operand 1445 states and 1998 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:08,260 INFO L93 Difference]: Finished difference Result 2383 states and 3210 transitions. [2023-04-03 03:18:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:08,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:08,265 INFO L225 Difference]: With dead ends: 2383 [2023-04-03 03:18:08,265 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:18:08,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:08,266 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 5642 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5642 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:08,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5642 Valid, 2884 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:18:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:18:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4111818825194622) internal successors, (1994), 1441 states have internal predecessors, (1994), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1997 transitions. [2023-04-03 03:18:08,458 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1997 transitions. Word has length 111 [2023-04-03 03:18:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:08,458 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1997 transitions. [2023-04-03 03:18:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1997 transitions. [2023-04-03 03:18:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:08,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:08,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:18:08,461 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:08,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -317893893, now seen corresponding path program 1 times [2023-04-03 03:18:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872282283] [2023-04-03 03:18:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:09,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:09,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872282283] [2023-04-03 03:18:09,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872282283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:09,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:09,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334077611] [2023-04-03 03:18:09,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:09,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:09,377 INFO L87 Difference]: Start difference. First operand 1445 states and 1997 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:12,766 INFO L93 Difference]: Finished difference Result 3334 states and 4556 transitions. [2023-04-03 03:18:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:18:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:12,771 INFO L225 Difference]: With dead ends: 3334 [2023-04-03 03:18:12,771 INFO L226 Difference]: Without dead ends: 3116 [2023-04-03 03:18:12,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:18:12,773 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 9464 mSDsluCounter, 3516 mSDsCounter, 0 mSdLazyCounter, 4438 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9464 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 4823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 4438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:12,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9464 Valid, 4582 Invalid, 4823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 4438 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 03:18:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-04-03 03:18:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 1449. [2023-04-03 03:18:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4100211714890614) internal successors, (1998), 1445 states have internal predecessors, (1998), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2001 transitions. [2023-04-03 03:18:13,004 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2001 transitions. Word has length 111 [2023-04-03 03:18:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2001 transitions. [2023-04-03 03:18:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2001 transitions. [2023-04-03 03:18:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:13,007 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:13,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:18:13,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:13,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash -76366455, now seen corresponding path program 1 times [2023-04-03 03:18:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956847317] [2023-04-03 03:18:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:13,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956847317] [2023-04-03 03:18:13,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956847317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:13,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:13,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:13,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124380847] [2023-04-03 03:18:13,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:13,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:13,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:13,489 INFO L87 Difference]: Start difference. First operand 1449 states and 2001 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:15,339 INFO L93 Difference]: Finished difference Result 2479 states and 3376 transitions. [2023-04-03 03:18:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:15,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:15,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:15,343 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:18:15,343 INFO L226 Difference]: Without dead ends: 2367 [2023-04-03 03:18:15,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:15,344 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 3763 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 2954 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:15,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3763 Valid, 3070 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2954 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-03 03:18:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2023-04-03 03:18:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4093154551870148) internal successors, (1997), 1445 states have internal predecessors, (1997), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2000 transitions. [2023-04-03 03:18:15,599 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2000 transitions. Word has length 111 [2023-04-03 03:18:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:15,600 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2000 transitions. [2023-04-03 03:18:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2000 transitions. [2023-04-03 03:18:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:15,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:15,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:15,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:18:15,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:15,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash 356052547, now seen corresponding path program 1 times [2023-04-03 03:18:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:15,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531610194] [2023-04-03 03:18:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:15,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:16,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531610194] [2023-04-03 03:18:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531610194] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:16,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744211199] [2023-04-03 03:18:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:16,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:16,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:16,092 INFO L87 Difference]: Start difference. First operand 1449 states and 2000 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:17,904 INFO L93 Difference]: Finished difference Result 2479 states and 3374 transitions. [2023-04-03 03:18:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:17,907 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:18:17,907 INFO L226 Difference]: Without dead ends: 2367 [2023-04-03 03:18:17,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:17,908 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 3709 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:17,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3709 Valid, 3105 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-03 03:18:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2023-04-03 03:18:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4086097388849683) internal successors, (1996), 1445 states have internal predecessors, (1996), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1999 transitions. [2023-04-03 03:18:18,122 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1999 transitions. Word has length 111 [2023-04-03 03:18:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:18,123 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1999 transitions. [2023-04-03 03:18:18,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1999 transitions. [2023-04-03 03:18:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:18,126 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:18,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:18,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:18:18,126 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:18,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:18,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1914066798, now seen corresponding path program 1 times [2023-04-03 03:18:18,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:18,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367042865] [2023-04-03 03:18:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:18,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:18,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367042865] [2023-04-03 03:18:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367042865] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474232405] [2023-04-03 03:18:18,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:18,602 INFO L87 Difference]: Start difference. First operand 1449 states and 1999 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:20,461 INFO L93 Difference]: Finished difference Result 2384 states and 3208 transitions. [2023-04-03 03:18:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:20,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:20,469 INFO L225 Difference]: With dead ends: 2384 [2023-04-03 03:18:20,469 INFO L226 Difference]: Without dead ends: 2278 [2023-04-03 03:18:20,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:20,470 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 5591 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5591 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:20,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5591 Valid, 2904 Invalid, 2966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2949 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2023-04-03 03:18:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1449. [2023-04-03 03:18:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4079040225829216) internal successors, (1995), 1445 states have internal predecessors, (1995), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1998 transitions. [2023-04-03 03:18:20,720 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1998 transitions. Word has length 111 [2023-04-03 03:18:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:20,720 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1998 transitions. [2023-04-03 03:18:20,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1998 transitions. [2023-04-03 03:18:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:20,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:20,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:20,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:18:20,723 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:20,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash 747309110, now seen corresponding path program 1 times [2023-04-03 03:18:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278723881] [2023-04-03 03:18:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:21,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278723881] [2023-04-03 03:18:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278723881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:21,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226017903] [2023-04-03 03:18:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:21,180 INFO L87 Difference]: Start difference. First operand 1449 states and 1998 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:23,110 INFO L93 Difference]: Finished difference Result 2483 states and 3373 transitions. [2023-04-03 03:18:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:23,115 INFO L225 Difference]: With dead ends: 2483 [2023-04-03 03:18:23,115 INFO L226 Difference]: Without dead ends: 2367 [2023-04-03 03:18:23,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:23,118 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 7520 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7520 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:23,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7520 Valid, 3097 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-03 03:18:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2023-04-03 03:18:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.407198306280875) internal successors, (1994), 1445 states have internal predecessors, (1994), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1997 transitions. [2023-04-03 03:18:23,432 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1997 transitions. Word has length 111 [2023-04-03 03:18:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:23,432 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1997 transitions. [2023-04-03 03:18:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1997 transitions. [2023-04-03 03:18:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:23,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:23,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:23,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:18:23,435 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:23,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1121965349, now seen corresponding path program 1 times [2023-04-03 03:18:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864524174] [2023-04-03 03:18:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:23,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864524174] [2023-04-03 03:18:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864524174] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734192989] [2023-04-03 03:18:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:23,865 INFO L87 Difference]: Start difference. First operand 1449 states and 1997 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:25,735 INFO L93 Difference]: Finished difference Result 2479 states and 3369 transitions. [2023-04-03 03:18:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:25,742 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:18:25,742 INFO L226 Difference]: Without dead ends: 2367 [2023-04-03 03:18:25,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:25,743 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 4363 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:25,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 3101 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-03 03:18:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2023-04-03 03:18:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4064925899788285) internal successors, (1993), 1445 states have internal predecessors, (1993), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1996 transitions. [2023-04-03 03:18:26,091 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1996 transitions. Word has length 111 [2023-04-03 03:18:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:26,091 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1996 transitions. [2023-04-03 03:18:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1996 transitions. [2023-04-03 03:18:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:26,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:26,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:26,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:18:26,093 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:26,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash -810318310, now seen corresponding path program 1 times [2023-04-03 03:18:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:26,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146987116] [2023-04-03 03:18:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:26,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:26,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146987116] [2023-04-03 03:18:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146987116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8531574] [2023-04-03 03:18:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:26,574 INFO L87 Difference]: Start difference. First operand 1449 states and 1996 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:28,528 INFO L93 Difference]: Finished difference Result 2489 states and 3379 transitions. [2023-04-03 03:18:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:28,531 INFO L225 Difference]: With dead ends: 2489 [2023-04-03 03:18:28,531 INFO L226 Difference]: Without dead ends: 2367 [2023-04-03 03:18:28,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:28,532 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 7509 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7509 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:28,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7509 Valid, 3097 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2023-04-03 03:18:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1449. [2023-04-03 03:18:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4050811573747353) internal successors, (1991), 1445 states have internal predecessors, (1991), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1994 transitions. [2023-04-03 03:18:28,769 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1994 transitions. Word has length 111 [2023-04-03 03:18:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:28,769 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1994 transitions. [2023-04-03 03:18:28,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1994 transitions. [2023-04-03 03:18:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:28,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:28,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:18:28,771 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:28,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash -381825144, now seen corresponding path program 1 times [2023-04-03 03:18:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310240035] [2023-04-03 03:18:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:29,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310240035] [2023-04-03 03:18:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310240035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:29,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:29,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564212347] [2023-04-03 03:18:29,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:29,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:29,204 INFO L87 Difference]: Start difference. First operand 1449 states and 1994 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:31,265 INFO L93 Difference]: Finished difference Result 2748 states and 3777 transitions. [2023-04-03 03:18:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:31,271 INFO L225 Difference]: With dead ends: 2748 [2023-04-03 03:18:31,271 INFO L226 Difference]: Without dead ends: 2442 [2023-04-03 03:18:31,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:31,274 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 6274 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6274 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:31,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6274 Valid, 3484 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-04-03 03:18:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1449. [2023-04-03 03:18:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.4036697247706422) internal successors, (1989), 1445 states have internal predecessors, (1989), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1992 transitions. [2023-04-03 03:18:31,665 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1992 transitions. Word has length 111 [2023-04-03 03:18:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1992 transitions. [2023-04-03 03:18:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1992 transitions. [2023-04-03 03:18:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:31,669 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:31,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:31,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:18:31,669 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:31,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1282586705, now seen corresponding path program 1 times [2023-04-03 03:18:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:31,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421177208] [2023-04-03 03:18:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:32,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421177208] [2023-04-03 03:18:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421177208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:32,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648672868] [2023-04-03 03:18:32,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:32,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:32,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:32,244 INFO L87 Difference]: Start difference. First operand 1449 states and 1992 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:34,784 INFO L93 Difference]: Finished difference Result 2677 states and 3589 transitions. [2023-04-03 03:18:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:18:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:34,788 INFO L225 Difference]: With dead ends: 2677 [2023-04-03 03:18:34,788 INFO L226 Difference]: Without dead ends: 2565 [2023-04-03 03:18:34,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:18:34,790 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 6209 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 4315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6209 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:34,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6209 Valid, 4162 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4315 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:18:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-04-03 03:18:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1495. [2023-04-03 03:18:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1463 states have (on average 1.4073820915926178) internal successors, (2059), 1491 states have internal predecessors, (2059), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2062 transitions. [2023-04-03 03:18:35,167 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2062 transitions. Word has length 111 [2023-04-03 03:18:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:35,167 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2062 transitions. [2023-04-03 03:18:35,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2062 transitions. [2023-04-03 03:18:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:35,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:35,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:18:35,169 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:35,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash 585991071, now seen corresponding path program 1 times [2023-04-03 03:18:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993081165] [2023-04-03 03:18:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:35,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:35,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993081165] [2023-04-03 03:18:35,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993081165] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:35,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:35,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884138700] [2023-04-03 03:18:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:35,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:35,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:35,685 INFO L87 Difference]: Start difference. First operand 1495 states and 2062 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:38,211 INFO L93 Difference]: Finished difference Result 2671 states and 3580 transitions. [2023-04-03 03:18:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:18:38,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:38,214 INFO L225 Difference]: With dead ends: 2671 [2023-04-03 03:18:38,214 INFO L226 Difference]: Without dead ends: 2559 [2023-04-03 03:18:38,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:18:38,215 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 7396 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7396 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:38,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7396 Valid, 3890 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:18:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2023-04-03 03:18:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1523. [2023-04-03 03:18:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1491 states have (on average 1.4077800134138163) internal successors, (2099), 1519 states have internal predecessors, (2099), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2102 transitions. [2023-04-03 03:18:38,543 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2102 transitions. Word has length 111 [2023-04-03 03:18:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:38,543 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2102 transitions. [2023-04-03 03:18:38,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2102 transitions. [2023-04-03 03:18:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:18:38,545 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:38,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:38,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:18:38,545 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:38,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1296902711, now seen corresponding path program 1 times [2023-04-03 03:18:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324942101] [2023-04-03 03:18:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:38,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324942101] [2023-04-03 03:18:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324942101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:38,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945554617] [2023-04-03 03:18:38,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:38,903 INFO L87 Difference]: Start difference. First operand 1523 states and 2102 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:40,455 INFO L93 Difference]: Finished difference Result 2141 states and 2936 transitions. [2023-04-03 03:18:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:18:40,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:18:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:40,457 INFO L225 Difference]: With dead ends: 2141 [2023-04-03 03:18:40,458 INFO L226 Difference]: Without dead ends: 1561 [2023-04-03 03:18:40,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:18:40,459 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2837 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:40,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 2988 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:18:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-04-03 03:18:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1449. [2023-04-03 03:18:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1417 states have (on average 1.402258292166549) internal successors, (1987), 1445 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1990 transitions. [2023-04-03 03:18:40,754 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1990 transitions. Word has length 111 [2023-04-03 03:18:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:40,754 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1990 transitions. [2023-04-03 03:18:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1990 transitions. [2023-04-03 03:18:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:18:40,756 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:40,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:40,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:18:40,756 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:40,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1852226673, now seen corresponding path program 1 times [2023-04-03 03:18:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360065104] [2023-04-03 03:18:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:41,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:41,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360065104] [2023-04-03 03:18:41,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360065104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:41,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:41,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:41,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513611249] [2023-04-03 03:18:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:41,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:41,153 INFO L87 Difference]: Start difference. First operand 1449 states and 1990 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:43,421 INFO L93 Difference]: Finished difference Result 2660 states and 3642 transitions. [2023-04-03 03:18:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:43,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2023-04-03 03:18:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:43,424 INFO L225 Difference]: With dead ends: 2660 [2023-04-03 03:18:43,424 INFO L226 Difference]: Without dead ends: 2442 [2023-04-03 03:18:43,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:43,425 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 4601 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:43,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 4461 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:18:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-04-03 03:18:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1445. [2023-04-03 03:18:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.402689313517339) internal successors, (1982), 1441 states have internal predecessors, (1982), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1985 transitions. [2023-04-03 03:18:43,727 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1985 transitions. Word has length 112 [2023-04-03 03:18:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:43,727 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1985 transitions. [2023-04-03 03:18:43,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1985 transitions. [2023-04-03 03:18:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:43,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:43,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:43,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:18:43,730 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:43,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2028469248, now seen corresponding path program 1 times [2023-04-03 03:18:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723943692] [2023-04-03 03:18:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:44,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723943692] [2023-04-03 03:18:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723943692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903332602] [2023-04-03 03:18:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:44,121 INFO L87 Difference]: Start difference. First operand 1445 states and 1985 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:46,461 INFO L93 Difference]: Finished difference Result 2603 states and 3555 transitions. [2023-04-03 03:18:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:18:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:46,464 INFO L225 Difference]: With dead ends: 2603 [2023-04-03 03:18:46,464 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:18:46,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:46,465 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 4683 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:46,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 4298 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:18:46,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:18:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:18:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4019815994338287) internal successors, (1981), 1441 states have internal predecessors, (1981), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1984 transitions. [2023-04-03 03:18:46,754 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1984 transitions. Word has length 113 [2023-04-03 03:18:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:46,754 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1984 transitions. [2023-04-03 03:18:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1984 transitions. [2023-04-03 03:18:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:46,756 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:46,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:18:46,756 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:46,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2103925124, now seen corresponding path program 1 times [2023-04-03 03:18:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152009096] [2023-04-03 03:18:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:47,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152009096] [2023-04-03 03:18:47,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152009096] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:47,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:47,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662300490] [2023-04-03 03:18:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:47,165 INFO L87 Difference]: Start difference. First operand 1445 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:49,520 INFO L93 Difference]: Finished difference Result 2584 states and 3532 transitions. [2023-04-03 03:18:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:18:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:49,523 INFO L225 Difference]: With dead ends: 2584 [2023-04-03 03:18:49,523 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:18:49,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:49,525 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 4811 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 4070 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 4085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 4689 Invalid, 4085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4070 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:18:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:18:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:18:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4012738853503184) internal successors, (1980), 1441 states have internal predecessors, (1980), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1983 transitions. [2023-04-03 03:18:49,815 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1983 transitions. Word has length 113 [2023-04-03 03:18:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:49,815 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1983 transitions. [2023-04-03 03:18:49,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1983 transitions. [2023-04-03 03:18:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:49,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:49,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:18:49,818 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:49,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash 461144205, now seen corresponding path program 1 times [2023-04-03 03:18:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:49,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700688648] [2023-04-03 03:18:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:50,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700688648] [2023-04-03 03:18:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700688648] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:50,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:50,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461745195] [2023-04-03 03:18:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:50,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:50,221 INFO L87 Difference]: Start difference. First operand 1445 states and 1983 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:52,419 INFO L93 Difference]: Finished difference Result 2530 states and 3447 transitions. [2023-04-03 03:18:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:52,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:18:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:52,422 INFO L225 Difference]: With dead ends: 2530 [2023-04-03 03:18:52,422 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:18:52,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:18:52,423 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 7122 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7122 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:52,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7122 Valid, 3578 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:18:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:18:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.4005661712668083) internal successors, (1979), 1441 states have internal predecessors, (1979), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1982 transitions. [2023-04-03 03:18:52,759 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1982 transitions. Word has length 113 [2023-04-03 03:18:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:52,759 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1982 transitions. [2023-04-03 03:18:52,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1982 transitions. [2023-04-03 03:18:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:52,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:52,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:18:52,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:52,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash 276813316, now seen corresponding path program 1 times [2023-04-03 03:18:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:52,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60572585] [2023-04-03 03:18:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:53,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:53,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60572585] [2023-04-03 03:18:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60572585] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:53,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193852627] [2023-04-03 03:18:53,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:53,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:53,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:53,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:53,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:53,136 INFO L87 Difference]: Start difference. First operand 1445 states and 1982 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:55,497 INFO L93 Difference]: Finished difference Result 2578 states and 3524 transitions. [2023-04-03 03:18:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:55,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:18:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:55,500 INFO L225 Difference]: With dead ends: 2578 [2023-04-03 03:18:55,500 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:18:55,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:55,501 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 4689 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 3872 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4689 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 3886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:55,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4689 Valid, 4362 Invalid, 3886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3872 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:18:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:18:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:18:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.399858457183298) internal successors, (1978), 1441 states have internal predecessors, (1978), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1981 transitions. [2023-04-03 03:18:55,811 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1981 transitions. Word has length 113 [2023-04-03 03:18:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:55,811 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1981 transitions. [2023-04-03 03:18:55,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1981 transitions. [2023-04-03 03:18:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:55,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:55,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:55,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:18:55,813 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:55,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1533766690, now seen corresponding path program 1 times [2023-04-03 03:18:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663227899] [2023-04-03 03:18:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:56,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:56,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663227899] [2023-04-03 03:18:56,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663227899] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:56,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:56,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503559329] [2023-04-03 03:18:56,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:56,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:56,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:56,131 INFO L87 Difference]: Start difference. First operand 1445 states and 1981 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:58,270 INFO L93 Difference]: Finished difference Result 2380 states and 3190 transitions. [2023-04-03 03:18:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:58,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:18:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:58,276 INFO L225 Difference]: With dead ends: 2380 [2023-04-03 03:18:58,276 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:18:58,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:58,277 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 3640 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:58,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 3147 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:18:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:18:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3991507430997876) internal successors, (1977), 1441 states have internal predecessors, (1977), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1980 transitions. [2023-04-03 03:18:58,596 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1980 transitions. Word has length 113 [2023-04-03 03:18:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:58,597 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1980 transitions. [2023-04-03 03:18:58,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1980 transitions. [2023-04-03 03:18:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:18:58,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:58,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:18:58,599 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:58,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 710607483, now seen corresponding path program 1 times [2023-04-03 03:18:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:58,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006544549] [2023-04-03 03:18:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:59,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006544549] [2023-04-03 03:18:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006544549] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:59,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:59,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:59,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534228846] [2023-04-03 03:18:59,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:59,012 INFO L87 Difference]: Start difference. First operand 1445 states and 1980 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:01,463 INFO L93 Difference]: Finished difference Result 2640 states and 3609 transitions. [2023-04-03 03:19:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:01,466 INFO L225 Difference]: With dead ends: 2640 [2023-04-03 03:19:01,466 INFO L226 Difference]: Without dead ends: 2442 [2023-04-03 03:19:01,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:01,467 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 5786 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 4032 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5786 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 4048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:01,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5786 Valid, 4653 Invalid, 4048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4032 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-04-03 03:19:01,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1445. [2023-04-03 03:19:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3984430290162775) internal successors, (1976), 1441 states have internal predecessors, (1976), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1979 transitions. [2023-04-03 03:19:01,828 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1979 transitions. Word has length 113 [2023-04-03 03:19:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:01,828 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1979 transitions. [2023-04-03 03:19:01,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1979 transitions. [2023-04-03 03:19:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:01,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:01,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:19:01,830 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:01,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1990138154, now seen corresponding path program 1 times [2023-04-03 03:19:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032254056] [2023-04-03 03:19:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:02,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032254056] [2023-04-03 03:19:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032254056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:02,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:02,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:02,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454180306] [2023-04-03 03:19:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:02,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:02,169 INFO L87 Difference]: Start difference. First operand 1445 states and 1979 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:04,243 INFO L93 Difference]: Finished difference Result 2489 states and 3366 transitions. [2023-04-03 03:19:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:04,246 INFO L225 Difference]: With dead ends: 2489 [2023-04-03 03:19:04,246 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:04,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:04,248 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 3679 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:04,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3679 Valid, 3137 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:19:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3970276008492568) internal successors, (1974), 1441 states have internal predecessors, (1974), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1977 transitions. [2023-04-03 03:19:04,591 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1977 transitions. Word has length 113 [2023-04-03 03:19:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:04,591 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1977 transitions. [2023-04-03 03:19:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1977 transitions. [2023-04-03 03:19:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:04,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:04,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:19:04,594 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:04,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1608233508, now seen corresponding path program 1 times [2023-04-03 03:19:04,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:04,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88788758] [2023-04-03 03:19:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:04,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88788758] [2023-04-03 03:19:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88788758] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:04,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671714368] [2023-04-03 03:19:04,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:04,898 INFO L87 Difference]: Start difference. First operand 1445 states and 1977 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:07,099 INFO L93 Difference]: Finished difference Result 2386 states and 3192 transitions. [2023-04-03 03:19:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:07,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:07,103 INFO L225 Difference]: With dead ends: 2386 [2023-04-03 03:19:07,103 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:19:07,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:07,104 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 5420 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 2988 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5420 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:07,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5420 Valid, 3045 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2988 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:19:07,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:19:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3956121726822364) internal successors, (1972), 1441 states have internal predecessors, (1972), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1975 transitions. [2023-04-03 03:19:07,471 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1975 transitions. Word has length 113 [2023-04-03 03:19:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:07,471 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1975 transitions. [2023-04-03 03:19:07,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1975 transitions. [2023-04-03 03:19:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:07,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:07,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:07,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:19:07,474 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:07,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1975822148, now seen corresponding path program 1 times [2023-04-03 03:19:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177382789] [2023-04-03 03:19:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:07,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177382789] [2023-04-03 03:19:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177382789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869479900] [2023-04-03 03:19:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:07,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:07,852 INFO L87 Difference]: Start difference. First operand 1445 states and 1975 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:10,354 INFO L93 Difference]: Finished difference Result 2653 states and 3616 transitions. [2023-04-03 03:19:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:10,357 INFO L225 Difference]: With dead ends: 2653 [2023-04-03 03:19:10,357 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:19:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:10,358 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 4537 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 4628 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:10,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4537 Valid, 4628 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:19:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:19:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:19:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.394196744515216) internal successors, (1970), 1441 states have internal predecessors, (1970), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1973 transitions. [2023-04-03 03:19:10,704 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1973 transitions. Word has length 113 [2023-04-03 03:19:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:10,704 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1973 transitions. [2023-04-03 03:19:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1973 transitions. [2023-04-03 03:19:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:10,706 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:10,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:10,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:19:10,706 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:10,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1416425948, now seen corresponding path program 1 times [2023-04-03 03:19:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916840759] [2023-04-03 03:19:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:11,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916840759] [2023-04-03 03:19:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916840759] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796476979] [2023-04-03 03:19:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:11,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:11,037 INFO L87 Difference]: Start difference. First operand 1445 states and 1973 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:13,452 INFO L93 Difference]: Finished difference Result 2800 states and 3813 transitions. [2023-04-03 03:19:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:13,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:13,455 INFO L225 Difference]: With dead ends: 2800 [2023-04-03 03:19:13,455 INFO L226 Difference]: Without dead ends: 2442 [2023-04-03 03:19:13,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:13,457 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 5740 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5740 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 3873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:13,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5740 Valid, 4414 Invalid, 3873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2023-04-03 03:19:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1445. [2023-04-03 03:19:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3927813163481952) internal successors, (1968), 1441 states have internal predecessors, (1968), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1971 transitions. [2023-04-03 03:19:13,814 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1971 transitions. Word has length 113 [2023-04-03 03:19:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:13,814 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1971 transitions. [2023-04-03 03:19:13,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1971 transitions. [2023-04-03 03:19:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:13,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:13,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:13,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:19:13,816 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:13,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash -33306547, now seen corresponding path program 1 times [2023-04-03 03:19:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446013245] [2023-04-03 03:19:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:14,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446013245] [2023-04-03 03:19:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446013245] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:14,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:14,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528859975] [2023-04-03 03:19:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:14,143 INFO L87 Difference]: Start difference. First operand 1445 states and 1971 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:16,471 INFO L93 Difference]: Finished difference Result 2559 states and 3472 transitions. [2023-04-03 03:19:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:16,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:16,473 INFO L225 Difference]: With dead ends: 2559 [2023-04-03 03:19:16,473 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:19:16,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:16,474 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 5889 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 3422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:16,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5889 Valid, 3866 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3422 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:19:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:19:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3913658881811748) internal successors, (1966), 1441 states have internal predecessors, (1966), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1969 transitions. [2023-04-03 03:19:16,835 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1969 transitions. Word has length 113 [2023-04-03 03:19:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:16,835 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1969 transitions. [2023-04-03 03:19:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1969 transitions. [2023-04-03 03:19:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:16,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:16,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:19:16,837 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:16,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1851585650, now seen corresponding path program 1 times [2023-04-03 03:19:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877684994] [2023-04-03 03:19:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:17,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877684994] [2023-04-03 03:19:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877684994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:17,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:17,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521288344] [2023-04-03 03:19:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:17,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:17,211 INFO L87 Difference]: Start difference. First operand 1445 states and 1969 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:19,681 INFO L93 Difference]: Finished difference Result 2637 states and 3585 transitions. [2023-04-03 03:19:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:19,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:19,683 INFO L225 Difference]: With dead ends: 2637 [2023-04-03 03:19:19,683 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:19:19,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:19,684 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 5560 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 4025 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5560 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:19,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5560 Valid, 4630 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4025 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:19:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:19:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3899504600141543) internal successors, (1964), 1441 states have internal predecessors, (1964), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1967 transitions. [2023-04-03 03:19:20,046 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1967 transitions. Word has length 113 [2023-04-03 03:19:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:20,046 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1967 transitions. [2023-04-03 03:19:20,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1967 transitions. [2023-04-03 03:19:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:20,048 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:20,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:19:20,048 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:20,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash -787138409, now seen corresponding path program 1 times [2023-04-03 03:19:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:20,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276938101] [2023-04-03 03:19:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:20,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276938101] [2023-04-03 03:19:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276938101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17335667] [2023-04-03 03:19:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:20,351 INFO L87 Difference]: Start difference. First operand 1445 states and 1967 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:22,592 INFO L93 Difference]: Finished difference Result 2382 states and 3177 transitions. [2023-04-03 03:19:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:22,595 INFO L225 Difference]: With dead ends: 2382 [2023-04-03 03:19:22,595 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:19:22,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:22,596 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 7056 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7056 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:22,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7056 Valid, 3020 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:19:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:19:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:19:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3885350318471337) internal successors, (1962), 1441 states have internal predecessors, (1962), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1965 transitions. [2023-04-03 03:19:22,980 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1965 transitions. Word has length 113 [2023-04-03 03:19:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:22,980 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1965 transitions. [2023-04-03 03:19:22,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:22,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1965 transitions. [2023-04-03 03:19:22,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 03:19:22,982 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:22,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:22,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:19:22,982 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:22,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash -817089921, now seen corresponding path program 1 times [2023-04-03 03:19:22,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:22,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356835719] [2023-04-03 03:19:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:23,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356835719] [2023-04-03 03:19:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356835719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956767725] [2023-04-03 03:19:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:23,314 INFO L87 Difference]: Start difference. First operand 1445 states and 1965 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:25,824 INFO L93 Difference]: Finished difference Result 2633 states and 3579 transitions. [2023-04-03 03:19:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-03 03:19:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:25,827 INFO L225 Difference]: With dead ends: 2633 [2023-04-03 03:19:25,827 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:19:25,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:25,828 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 5566 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:25,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5566 Valid, 4683 Invalid, 4047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4030 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:19:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:19:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3871196036801132) internal successors, (1960), 1441 states have internal predecessors, (1960), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1963 transitions. [2023-04-03 03:19:26,216 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1963 transitions. Word has length 113 [2023-04-03 03:19:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1963 transitions. [2023-04-03 03:19:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1963 transitions. [2023-04-03 03:19:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:19:26,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:26,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-03 03:19:26,219 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:26,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -516832919, now seen corresponding path program 1 times [2023-04-03 03:19:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:26,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970150098] [2023-04-03 03:19:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:26,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970150098] [2023-04-03 03:19:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970150098] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:26,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:26,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:26,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405624423] [2023-04-03 03:19:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:26,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:26,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:26,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:26,664 INFO L87 Difference]: Start difference. First operand 1445 states and 1963 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:28,949 INFO L93 Difference]: Finished difference Result 2469 states and 3317 transitions. [2023-04-03 03:19:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:28,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-03 03:19:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:28,952 INFO L225 Difference]: With dead ends: 2469 [2023-04-03 03:19:28,952 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:28,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:28,953 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 3585 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 2962 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:28,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3585 Valid, 3204 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2962 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:19:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3864118895966029) internal successors, (1959), 1441 states have internal predecessors, (1959), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1962 transitions. [2023-04-03 03:19:29,358 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1962 transitions. Word has length 114 [2023-04-03 03:19:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:29,358 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1962 transitions. [2023-04-03 03:19:29,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1962 transitions. [2023-04-03 03:19:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:19:29,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:29,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-03 03:19:29,361 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:29,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -25433569, now seen corresponding path program 1 times [2023-04-03 03:19:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:29,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194963077] [2023-04-03 03:19:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:29,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:29,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194963077] [2023-04-03 03:19:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194963077] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836352712] [2023-04-03 03:19:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:29,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:29,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:29,860 INFO L87 Difference]: Start difference. First operand 1445 states and 1962 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:32,445 INFO L93 Difference]: Finished difference Result 2529 states and 3422 transitions. [2023-04-03 03:19:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:32,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-03 03:19:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:32,451 INFO L225 Difference]: With dead ends: 2529 [2023-04-03 03:19:32,452 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:19:32,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:32,452 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 6104 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6104 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:32,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6104 Valid, 4233 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3763 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:19:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:19:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3857041755130928) internal successors, (1958), 1441 states have internal predecessors, (1958), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1961 transitions. [2023-04-03 03:19:32,842 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1961 transitions. Word has length 114 [2023-04-03 03:19:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:32,842 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1961 transitions. [2023-04-03 03:19:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1961 transitions. [2023-04-03 03:19:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:32,844 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:32,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:32,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-03 03:19:32,845 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:32,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1820521563, now seen corresponding path program 1 times [2023-04-03 03:19:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:32,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134413820] [2023-04-03 03:19:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:33,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:33,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134413820] [2023-04-03 03:19:33,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134413820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:33,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:33,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762306189] [2023-04-03 03:19:33,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:33,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:33,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:33,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:33,186 INFO L87 Difference]: Start difference. First operand 1445 states and 1961 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:35,669 INFO L93 Difference]: Finished difference Result 2549 states and 3442 transitions. [2023-04-03 03:19:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:35,671 INFO L225 Difference]: With dead ends: 2549 [2023-04-03 03:19:35,672 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:19:35,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:35,672 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 3180 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 3665 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:35,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 4141 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3665 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:19:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:19:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3849964614295824) internal successors, (1957), 1441 states have internal predecessors, (1957), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1960 transitions. [2023-04-03 03:19:36,089 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1960 transitions. Word has length 115 [2023-04-03 03:19:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:36,089 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1960 transitions. [2023-04-03 03:19:36,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1960 transitions. [2023-04-03 03:19:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:36,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:36,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:36,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-03 03:19:36,091 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:36,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1684281790, now seen corresponding path program 1 times [2023-04-03 03:19:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069073304] [2023-04-03 03:19:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:36,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:36,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069073304] [2023-04-03 03:19:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069073304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:36,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893784558] [2023-04-03 03:19:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:36,438 INFO L87 Difference]: Start difference. First operand 1445 states and 1960 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:38,933 INFO L93 Difference]: Finished difference Result 2479 states and 3327 transitions. [2023-04-03 03:19:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:38,936 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:19:38,936 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:38,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:38,938 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 7088 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 3067 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7088 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:38,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7088 Valid, 3349 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3067 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.384288747346072) internal successors, (1956), 1441 states have internal predecessors, (1956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1959 transitions. [2023-04-03 03:19:39,377 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1959 transitions. Word has length 115 [2023-04-03 03:19:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:39,377 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1959 transitions. [2023-04-03 03:19:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1959 transitions. [2023-04-03 03:19:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:39,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:39,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-04-03 03:19:39,379 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:39,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1744325548, now seen corresponding path program 1 times [2023-04-03 03:19:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197349846] [2023-04-03 03:19:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:39,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197349846] [2023-04-03 03:19:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197349846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226902266] [2023-04-03 03:19:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:39,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:39,684 INFO L87 Difference]: Start difference. First operand 1445 states and 1959 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:42,097 INFO L93 Difference]: Finished difference Result 2380 states and 3165 transitions. [2023-04-03 03:19:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:42,100 INFO L225 Difference]: With dead ends: 2380 [2023-04-03 03:19:42,100 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:19:42,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:42,101 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 3678 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3678 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:42,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3678 Valid, 3056 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:19:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:19:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:19:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.383581033262562) internal successors, (1955), 1441 states have internal predecessors, (1955), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1958 transitions. [2023-04-03 03:19:42,539 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1958 transitions. Word has length 115 [2023-04-03 03:19:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:42,539 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1958 transitions. [2023-04-03 03:19:42,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1958 transitions. [2023-04-03 03:19:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:42,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:42,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-04-03 03:19:42,541 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:42,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1386680902, now seen corresponding path program 1 times [2023-04-03 03:19:42,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:42,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040377304] [2023-04-03 03:19:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:42,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:42,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040377304] [2023-04-03 03:19:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040377304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:42,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902445188] [2023-04-03 03:19:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:42,887 INFO L87 Difference]: Start difference. First operand 1445 states and 1958 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:45,356 INFO L93 Difference]: Finished difference Result 2479 states and 3323 transitions. [2023-04-03 03:19:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:45,359 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:19:45,359 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:45,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:45,361 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 5942 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5942 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:45,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5942 Valid, 3344 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3828733191790517) internal successors, (1954), 1441 states have internal predecessors, (1954), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1957 transitions. [2023-04-03 03:19:45,813 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1957 transitions. Word has length 115 [2023-04-03 03:19:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:45,813 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1957 transitions. [2023-04-03 03:19:45,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1957 transitions. [2023-04-03 03:19:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:45,814 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:45,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-04-03 03:19:45,815 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:45,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1850454494, now seen corresponding path program 1 times [2023-04-03 03:19:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398762502] [2023-04-03 03:19:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:46,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:46,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398762502] [2023-04-03 03:19:46,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398762502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:46,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:46,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:46,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689795735] [2023-04-03 03:19:46,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:46,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:46,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:46,173 INFO L87 Difference]: Start difference. First operand 1445 states and 1957 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:48,750 INFO L93 Difference]: Finished difference Result 2475 states and 3318 transitions. [2023-04-03 03:19:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:48,752 INFO L225 Difference]: With dead ends: 2475 [2023-04-03 03:19:48,753 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:48,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:48,753 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 7058 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7058 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:48,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7058 Valid, 3358 Invalid, 3074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3821656050955413) internal successors, (1953), 1441 states have internal predecessors, (1953), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1956 transitions. [2023-04-03 03:19:49,200 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1956 transitions. Word has length 115 [2023-04-03 03:19:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1956 transitions. [2023-04-03 03:19:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1956 transitions. [2023-04-03 03:19:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:49,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:49,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:49,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-04-03 03:19:49,202 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:49,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1934571401, now seen corresponding path program 1 times [2023-04-03 03:19:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:49,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235435508] [2023-04-03 03:19:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:49,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:49,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235435508] [2023-04-03 03:19:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235435508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511503022] [2023-04-03 03:19:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:49,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:49,544 INFO L87 Difference]: Start difference. First operand 1445 states and 1956 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:52,580 INFO L93 Difference]: Finished difference Result 2540 states and 3427 transitions. [2023-04-03 03:19:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:52,583 INFO L225 Difference]: With dead ends: 2540 [2023-04-03 03:19:52,583 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:19:52,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:52,584 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 4457 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 4270 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:52,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 4932 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4270 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:19:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:19:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:19:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3814578910120312) internal successors, (1952), 1441 states have internal predecessors, (1952), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1955 transitions. [2023-04-03 03:19:53,049 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1955 transitions. Word has length 115 [2023-04-03 03:19:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:53,049 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1955 transitions. [2023-04-03 03:19:53,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1955 transitions. [2023-04-03 03:19:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:53,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:53,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:53,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-04-03 03:19:53,051 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:53,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1022279802, now seen corresponding path program 1 times [2023-04-03 03:19:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:53,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191770009] [2023-04-03 03:19:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:53,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:53,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191770009] [2023-04-03 03:19:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191770009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:53,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290553780] [2023-04-03 03:19:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:53,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:53,404 INFO L87 Difference]: Start difference. First operand 1445 states and 1955 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:56,034 INFO L93 Difference]: Finished difference Result 2475 states and 3316 transitions. [2023-04-03 03:19:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:56,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:56,037 INFO L225 Difference]: With dead ends: 2475 [2023-04-03 03:19:56,037 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:56,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:56,038 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 6816 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6816 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6816 Valid, 3508 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3807501769285209) internal successors, (1951), 1441 states have internal predecessors, (1951), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1954 transitions. [2023-04-03 03:19:56,492 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1954 transitions. Word has length 115 [2023-04-03 03:19:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:56,492 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1954 transitions. [2023-04-03 03:19:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1954 transitions. [2023-04-03 03:19:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:56,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:56,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:56,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-04-03 03:19:56,494 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:56,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1886443730, now seen corresponding path program 1 times [2023-04-03 03:19:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171185567] [2023-04-03 03:19:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:56,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:56,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171185567] [2023-04-03 03:19:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171185567] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:56,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:56,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454668395] [2023-04-03 03:19:56,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:56,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:56,803 INFO L87 Difference]: Start difference. First operand 1445 states and 1954 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:59,344 INFO L93 Difference]: Finished difference Result 2475 states and 3315 transitions. [2023-04-03 03:19:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:59,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:19:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:59,347 INFO L225 Difference]: With dead ends: 2475 [2023-04-03 03:19:59,347 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:19:59,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:59,348 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 5767 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5767 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:59,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5767 Valid, 3489 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:19:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:19:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3800424628450105) internal successors, (1950), 1441 states have internal predecessors, (1950), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1953 transitions. [2023-04-03 03:19:59,828 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1953 transitions. Word has length 115 [2023-04-03 03:19:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:59,828 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1953 transitions. [2023-04-03 03:19:59,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1953 transitions. [2023-04-03 03:19:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:59,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:59,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:59,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-04-03 03:19:59,830 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:59,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 497999900, now seen corresponding path program 1 times [2023-04-03 03:19:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214173881] [2023-04-03 03:19:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:59,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:00,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214173881] [2023-04-03 03:20:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214173881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:00,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:00,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:00,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786370134] [2023-04-03 03:20:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:00,200 INFO L87 Difference]: Start difference. First operand 1445 states and 1953 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:02,847 INFO L93 Difference]: Finished difference Result 2469 states and 3304 transitions. [2023-04-03 03:20:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:02,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:02,850 INFO L225 Difference]: With dead ends: 2469 [2023-04-03 03:20:02,850 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:20:02,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:02,851 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 6973 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6973 SdHoareTripleChecker+Valid, 3416 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:02,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6973 Valid, 3416 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:20:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:20:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3793347487615004) internal successors, (1949), 1441 states have internal predecessors, (1949), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1952 transitions. [2023-04-03 03:20:03,324 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1952 transitions. Word has length 115 [2023-04-03 03:20:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:03,324 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1952 transitions. [2023-04-03 03:20:03,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1952 transitions. [2023-04-03 03:20:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:03,325 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:03,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:03,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-04-03 03:20:03,326 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:03,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash 30550358, now seen corresponding path program 1 times [2023-04-03 03:20:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224713790] [2023-04-03 03:20:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:03,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224713790] [2023-04-03 03:20:03,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224713790] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925423825] [2023-04-03 03:20:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:03,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:03,678 INFO L87 Difference]: Start difference. First operand 1445 states and 1952 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:06,682 INFO L93 Difference]: Finished difference Result 2589 states and 3493 transitions. [2023-04-03 03:20:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:06,685 INFO L225 Difference]: With dead ends: 2589 [2023-04-03 03:20:06,685 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:20:06,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:06,686 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 4303 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 4523 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:06,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 5376 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4523 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:20:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:20:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:20:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.37862703467799) internal successors, (1948), 1441 states have internal predecessors, (1948), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1951 transitions. [2023-04-03 03:20:07,187 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1951 transitions. Word has length 115 [2023-04-03 03:20:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:07,188 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1951 transitions. [2023-04-03 03:20:07,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1951 transitions. [2023-04-03 03:20:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:07,189 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:07,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:07,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-04-03 03:20:07,189 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:07,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2111214351, now seen corresponding path program 1 times [2023-04-03 03:20:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:07,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047828677] [2023-04-03 03:20:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:07,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047828677] [2023-04-03 03:20:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047828677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:07,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018139173] [2023-04-03 03:20:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:07,523 INFO L87 Difference]: Start difference. First operand 1445 states and 1951 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:10,350 INFO L93 Difference]: Finished difference Result 2535 states and 3415 transitions. [2023-04-03 03:20:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:10,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:10,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:10,353 INFO L225 Difference]: With dead ends: 2535 [2023-04-03 03:20:10,353 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:20:10,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:10,354 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 5852 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5852 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:10,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5852 Valid, 4395 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:20:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:20:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:20:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3779193205944797) internal successors, (1947), 1441 states have internal predecessors, (1947), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1950 transitions. [2023-04-03 03:20:10,834 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1950 transitions. Word has length 115 [2023-04-03 03:20:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:10,834 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1950 transitions. [2023-04-03 03:20:10,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1950 transitions. [2023-04-03 03:20:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:10,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:10,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:10,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-04-03 03:20:10,836 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:10,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1394808161, now seen corresponding path program 1 times [2023-04-03 03:20:10,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:10,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418335610] [2023-04-03 03:20:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:10,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:11,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418335610] [2023-04-03 03:20:11,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418335610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:11,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:11,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:11,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696862875] [2023-04-03 03:20:11,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:11,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:11,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:11,183 INFO L87 Difference]: Start difference. First operand 1445 states and 1950 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:13,770 INFO L93 Difference]: Finished difference Result 2380 states and 3156 transitions. [2023-04-03 03:20:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:13,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:13,773 INFO L225 Difference]: With dead ends: 2380 [2023-04-03 03:20:13,773 INFO L226 Difference]: Without dead ends: 2274 [2023-04-03 03:20:13,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:13,774 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 5144 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5144 Valid, 3239 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-04-03 03:20:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1445. [2023-04-03 03:20:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3772116065109696) internal successors, (1946), 1441 states have internal predecessors, (1946), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1949 transitions. [2023-04-03 03:20:14,277 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1949 transitions. Word has length 115 [2023-04-03 03:20:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:14,277 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1949 transitions. [2023-04-03 03:20:14,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1949 transitions. [2023-04-03 03:20:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:14,278 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:14,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:14,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-04-03 03:20:14,279 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:14,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 177375063, now seen corresponding path program 1 times [2023-04-03 03:20:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834711347] [2023-04-03 03:20:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:14,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834711347] [2023-04-03 03:20:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834711347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:14,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:14,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512651788] [2023-04-03 03:20:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:14,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:14,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:14,630 INFO L87 Difference]: Start difference. First operand 1445 states and 1949 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:17,358 INFO L93 Difference]: Finished difference Result 2571 states and 3459 transitions. [2023-04-03 03:20:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:17,361 INFO L225 Difference]: With dead ends: 2571 [2023-04-03 03:20:17,361 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:20:17,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:17,362 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 5811 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 3583 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5811 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:17,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5811 Valid, 4233 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3583 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:20:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:20:17,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:20:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.375796178343949) internal successors, (1944), 1441 states have internal predecessors, (1944), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1947 transitions. [2023-04-03 03:20:17,869 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1947 transitions. Word has length 115 [2023-04-03 03:20:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:17,869 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1947 transitions. [2023-04-03 03:20:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1947 transitions. [2023-04-03 03:20:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:17,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:17,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:17,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-04-03 03:20:17,871 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:17,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1688080737, now seen corresponding path program 1 times [2023-04-03 03:20:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:17,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477237482] [2023-04-03 03:20:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:17,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:18,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477237482] [2023-04-03 03:20:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477237482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:18,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172521428] [2023-04-03 03:20:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:18,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:18,178 INFO L87 Difference]: Start difference. First operand 1445 states and 1947 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:20,811 INFO L93 Difference]: Finished difference Result 2489 states and 3324 transitions. [2023-04-03 03:20:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:20,814 INFO L225 Difference]: With dead ends: 2489 [2023-04-03 03:20:20,814 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:20:20,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:20,815 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 4992 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 3582 Invalid, 3199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:20:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:20:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3743807501769285) internal successors, (1942), 1441 states have internal predecessors, (1942), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1945 transitions. [2023-04-03 03:20:21,328 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1945 transitions. Word has length 115 [2023-04-03 03:20:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1945 transitions. [2023-04-03 03:20:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1945 transitions. [2023-04-03 03:20:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:21,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:21,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-04-03 03:20:21,330 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr23ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:21,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash 809198452, now seen corresponding path program 1 times [2023-04-03 03:20:21,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:21,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617686540] [2023-04-03 03:20:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:21,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:21,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617686540] [2023-04-03 03:20:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617686540] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845249171] [2023-04-03 03:20:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:21,652 INFO L87 Difference]: Start difference. First operand 1445 states and 1945 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:24,535 INFO L93 Difference]: Finished difference Result 2669 states and 3587 transitions. [2023-04-03 03:20:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:24,538 INFO L225 Difference]: With dead ends: 2669 [2023-04-03 03:20:24,538 INFO L226 Difference]: Without dead ends: 2435 [2023-04-03 03:20:24,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:24,539 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 5512 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5512 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 3918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:24,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5512 Valid, 4570 Invalid, 3918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:20:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-04-03 03:20:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1445. [2023-04-03 03:20:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.372965322009908) internal successors, (1940), 1441 states have internal predecessors, (1940), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1943 transitions. [2023-04-03 03:20:25,059 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1943 transitions. Word has length 115 [2023-04-03 03:20:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:25,059 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1943 transitions. [2023-04-03 03:20:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1943 transitions. [2023-04-03 03:20:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:25,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:25,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-04-03 03:20:25,061 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:25,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 761744375, now seen corresponding path program 1 times [2023-04-03 03:20:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245237389] [2023-04-03 03:20:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:25,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245237389] [2023-04-03 03:20:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245237389] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714020181] [2023-04-03 03:20:25,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:25,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:25,410 INFO L87 Difference]: Start difference. First operand 1445 states and 1943 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:28,351 INFO L93 Difference]: Finished difference Result 2571 states and 3451 transitions. [2023-04-03 03:20:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:28,353 INFO L225 Difference]: With dead ends: 2571 [2023-04-03 03:20:28,353 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:20:28,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:28,354 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 5508 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 3840 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5508 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:28,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5508 Valid, 4526 Invalid, 3858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3840 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:20:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:20:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:20:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3715498938428874) internal successors, (1938), 1441 states have internal predecessors, (1938), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1941 transitions. [2023-04-03 03:20:28,889 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1941 transitions. Word has length 115 [2023-04-03 03:20:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:28,889 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1941 transitions. [2023-04-03 03:20:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1941 transitions. [2023-04-03 03:20:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:28,891 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:28,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:28,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-04-03 03:20:28,891 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:28,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1561538409, now seen corresponding path program 1 times [2023-04-03 03:20:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:28,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203471389] [2023-04-03 03:20:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:29,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203471389] [2023-04-03 03:20:29,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203471389] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:29,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:29,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202124427] [2023-04-03 03:20:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:29,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:29,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:29,279 INFO L87 Difference]: Start difference. First operand 1445 states and 1941 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:32,100 INFO L93 Difference]: Finished difference Result 2489 states and 3318 transitions. [2023-04-03 03:20:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:32,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:32,103 INFO L225 Difference]: With dead ends: 2489 [2023-04-03 03:20:32,103 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:20:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:32,104 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 6578 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6578 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:32,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6578 Valid, 3689 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:20:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:20:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.370134465675867) internal successors, (1936), 1441 states have internal predecessors, (1936), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1939 transitions. [2023-04-03 03:20:32,646 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1939 transitions. Word has length 115 [2023-04-03 03:20:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:32,646 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1939 transitions. [2023-04-03 03:20:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1939 transitions. [2023-04-03 03:20:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:32,647 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:32,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:32,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-04-03 03:20:32,647 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr22ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:32,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:32,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1655537623, now seen corresponding path program 1 times [2023-04-03 03:20:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:32,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814102443] [2023-04-03 03:20:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:33,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:33,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814102443] [2023-04-03 03:20:33,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814102443] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:33,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:33,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644069725] [2023-04-03 03:20:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:33,048 INFO L87 Difference]: Start difference. First operand 1445 states and 1939 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:35,885 INFO L93 Difference]: Finished difference Result 2483 states and 3309 transitions. [2023-04-03 03:20:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:35,888 INFO L225 Difference]: With dead ends: 2483 [2023-04-03 03:20:35,888 INFO L226 Difference]: Without dead ends: 2363 [2023-04-03 03:20:35,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:35,889 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 6562 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:35,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6562 Valid, 3698 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-03 03:20:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1445. [2023-04-03 03:20:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3687190375088465) internal successors, (1934), 1441 states have internal predecessors, (1934), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1937 transitions. [2023-04-03 03:20:36,447 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1937 transitions. Word has length 115 [2023-04-03 03:20:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:36,447 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1937 transitions. [2023-04-03 03:20:36,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:36,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1937 transitions. [2023-04-03 03:20:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:36,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:36,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:36,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-04-03 03:20:36,449 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:36,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -881646085, now seen corresponding path program 1 times [2023-04-03 03:20:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840365692] [2023-04-03 03:20:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:36,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840365692] [2023-04-03 03:20:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840365692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:36,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366728440] [2023-04-03 03:20:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:36,841 INFO L87 Difference]: Start difference. First operand 1445 states and 1937 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:39,986 INFO L93 Difference]: Finished difference Result 2563 states and 3433 transitions. [2023-04-03 03:20:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:39,989 INFO L225 Difference]: With dead ends: 2563 [2023-04-03 03:20:39,989 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:20:39,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:39,990 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 4237 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 5390 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:39,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4237 Valid, 5390 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:20:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:20:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:20:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3673036093418258) internal successors, (1932), 1441 states have internal predecessors, (1932), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1935 transitions. [2023-04-03 03:20:40,527 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1935 transitions. Word has length 115 [2023-04-03 03:20:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:40,527 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1935 transitions. [2023-04-03 03:20:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1935 transitions. [2023-04-03 03:20:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:40,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:40,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:40,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-04-03 03:20:40,529 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:40,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:40,529 INFO L85 PathProgramCache]: Analyzing trace with hash -44964339, now seen corresponding path program 1 times [2023-04-03 03:20:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248370601] [2023-04-03 03:20:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:40,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248370601] [2023-04-03 03:20:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248370601] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880823754] [2023-04-03 03:20:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:40,848 INFO L87 Difference]: Start difference. First operand 1445 states and 1935 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:43,791 INFO L93 Difference]: Finished difference Result 2559 states and 3422 transitions. [2023-04-03 03:20:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:43,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:20:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:43,794 INFO L225 Difference]: With dead ends: 2559 [2023-04-03 03:20:43,794 INFO L226 Difference]: Without dead ends: 2411 [2023-04-03 03:20:43,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:43,795 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 4254 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 3879 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:43,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 4571 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3879 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:20:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2023-04-03 03:20:44,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1445. [2023-04-03 03:20:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1413 states have (on average 1.3658881811748054) internal successors, (1930), 1441 states have internal predecessors, (1930), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1933 transitions. [2023-04-03 03:20:44,338 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1933 transitions. Word has length 115 [2023-04-03 03:20:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:44,338 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1933 transitions. [2023-04-03 03:20:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:20:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1933 transitions. [2023-04-03 03:20:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:20:44,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:44,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:44,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-04-03 03:20:44,340 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:44,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2094956000, now seen corresponding path program 1 times [2023-04-03 03:20:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401674437] [2023-04-03 03:20:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:44,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:44,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401674437] [2023-04-03 03:20:44,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401674437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:44,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:44,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637124781] [2023-04-03 03:20:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:44,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:44,654 INFO L87 Difference]: Start difference. First operand 1445 states and 1933 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)