/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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:38:50,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:38:50,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:38:50,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:38:50,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:38:50,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:38:50,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:38:50,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:38:50,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:38:50,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:38:50,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:38:50,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:38:50,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:38:50,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:38:50,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:38:50,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:38:50,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:38:50,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:38:50,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:38:50,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:38:50,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:38:50,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:38:50,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:38:50,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:38:50,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:38:50,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:38:50,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:38:50,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:38:50,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:38:50,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:38:50,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:38:50,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:38:50,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:38:50,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:38:50,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:38:50,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:38:50,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:38:50,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:38:50,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:38:50,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:38:50,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:38:50,409 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 [2023-04-01 06:38:50,444 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:38:50,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:38:50,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:38:50,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:38:50,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:38:50,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:38:50,446 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:38:50,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:38:50,446 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:38:50,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:38:50,447 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:38:50,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:38:50,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:38:50,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:38:50,447 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:38:50,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:38:50,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:38:50,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:38:50,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:38:50,448 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:38:50,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:38:50,449 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:38:50,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:38:50,450 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:38:50,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:38:50,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:38:50,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:38:50,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:38:50,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:38:50,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:38:50,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:38:50,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:38:50,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:38:50,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:38:50,694 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:38:50,695 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:38:50,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:38:51,766 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:38:52,141 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:38:52,142 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:38:52,162 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef8dba04/e87aac9707464c1787e0dd0c7da8ef42/FLAG5f52c8e6a [2023-04-01 06:38:52,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef8dba04/e87aac9707464c1787e0dd0c7da8ef42 [2023-04-01 06:38:52,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:38:52,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:38:52,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:38:52,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:38:52,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:38:52,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:38:52" (1/1) ... [2023-04-01 06:38:52,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34229a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:52, skipping insertion in model container [2023-04-01 06:38:52,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:38:52" (1/1) ... [2023-04-01 06:38:52,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:38:52,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:38:52,576 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2023-04-01 06:38:52,613 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2023-04-01 06:38:52,621 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2023-04-01 06:38:52,637 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2023-04-01 06:38:52,650 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2023-04-01 06:38:52,654 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2023-04-01 06:38:52,661 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2023-04-01 06:38:52,673 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2023-04-01 06:38:52,683 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2023-04-01 06:38:52,698 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2023-04-01 06:38:52,709 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2023-04-01 06:38:52,733 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2023-04-01 06:38:52,739 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2023-04-01 06:38:52,745 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2023-04-01 06:38:52,757 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2023-04-01 06:38:52,768 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2023-04-01 06:38:52,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:38:52,937 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:38:52,992 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11563,11576] [2023-04-01 06:38:53,001 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15640,15653] [2023-04-01 06:38:53,006 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16861,16874] [2023-04-01 06:38:53,008 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17567,17580] [2023-04-01 06:38:53,013 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19153,19166] [2023-04-01 06:38:53,015 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19859,19872] [2023-04-01 06:38:53,022 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20930,20943] [2023-04-01 06:38:53,030 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23420,23433] [2023-04-01 06:38:53,032 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24129,24142] [2023-04-01 06:38:53,038 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25166,25179] [2023-04-01 06:38:53,044 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27104,27117] [2023-04-01 06:38:53,054 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31138,31151] [2023-04-01 06:38:53,057 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31847,31860] [2023-04-01 06:38:53,060 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32921,32934] [2023-04-01 06:38:53,065 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34896,34909] [2023-04-01 06:38:53,073 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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38277,38290] [2023-04-01 06:38:53,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:38:53,218 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:38:53,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53 WrapperNode [2023-04-01 06:38:53,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:38:53,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:38:53,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:38:53,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:38:53,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:38:53,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:38:53,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:38:53,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:38:53,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (1/1) ... [2023-04-01 06:38:53,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:38:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:38:53,417 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) [2023-04-01 06:38:53,438 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 [2023-04-01 06:38:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:38:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:38:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:38:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:38:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:38:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:38:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:38:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:38:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:38:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:38:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:38:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:38:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:38:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:38:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:38:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:38:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:38:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:38:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:38:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:38:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:38:53,701 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:38:53,703 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:38:55,336 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:38:55,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:38:55,420 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:38:55,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:38:55 BoogieIcfgContainer [2023-04-01 06:38:55,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:38:55,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:38:55,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:38:55,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:38:55,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:38:52" (1/3) ... [2023-04-01 06:38:55,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d86842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:38:55, skipping insertion in model container [2023-04-01 06:38:55,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:38:53" (2/3) ... [2023-04-01 06:38:55,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d86842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:38:55, skipping insertion in model container [2023-04-01 06:38:55,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:38:55" (3/3) ... [2023-04-01 06:38:55,430 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:38:55,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:38:55,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-04-01 06:38:55,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:38:55,505 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;@6487cc20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:38:55,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-04-01 06:38:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 591 states have (on average 1.8510998307952622) internal successors, (1094), 608 states have internal predecessors, (1094), 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) [2023-04-01 06:38:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:38:55,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:55,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:38:55,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:55,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1330220206, now seen corresponding path program 1 times [2023-04-01 06:38:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:55,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422314852] [2023-04-01 06:38:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:56,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422314852] [2023-04-01 06:38:56,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422314852] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:56,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:56,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:38:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139616368] [2023-04-01 06:38:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:56,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:38:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:38:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:38:56,189 INFO L87 Difference]: Start difference. First operand has 613 states, 591 states have (on average 1.8510998307952622) internal successors, (1094), 608 states have internal predecessors, (1094), 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 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:56,841 INFO L93 Difference]: Finished difference Result 943 states and 1625 transitions. [2023-04-01 06:38:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:38:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 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 75 [2023-04-01 06:38:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:56,861 INFO L225 Difference]: With dead ends: 943 [2023-04-01 06:38:56,861 INFO L226 Difference]: Without dead ends: 528 [2023-04-01 06:38:56,870 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 [2023-04-01 06:38:56,876 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2565 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:56,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 635 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:38:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-04-01 06:38:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2023-04-01 06:38:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 509 states have (on average 1.2593320235756384) internal successors, (641), 524 states have internal predecessors, (641), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 644 transitions. [2023-04-01 06:38:56,972 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 644 transitions. Word has length 75 [2023-04-01 06:38:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:56,973 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 644 transitions. [2023-04-01 06:38:56,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 644 transitions. [2023-04-01 06:38:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 06:38:56,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:56,987 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] [2023-04-01 06:38:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:38:56,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:56,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1046699964, now seen corresponding path program 1 times [2023-04-01 06:38:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351105536] [2023-04-01 06:38:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:57,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351105536] [2023-04-01 06:38:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351105536] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:57,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:38:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898010770] [2023-04-01 06:38:57,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:38:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:38:57,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:38:57,228 INFO L87 Difference]: Start difference. First operand 528 states and 644 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:57,532 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2023-04-01 06:38:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:38:57,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 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 76 [2023-04-01 06:38:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:57,535 INFO L225 Difference]: With dead ends: 845 [2023-04-01 06:38:57,535 INFO L226 Difference]: Without dead ends: 446 [2023-04-01 06:38:57,536 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 [2023-04-01 06:38:57,537 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1593 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:57,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 331 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:38:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-04-01 06:38:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2023-04-01 06:38:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 427 states have (on average 1.288056206088993) internal successors, (550), 442 states have internal predecessors, (550), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 553 transitions. [2023-04-01 06:38:57,561 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 553 transitions. Word has length 76 [2023-04-01 06:38:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:57,561 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 553 transitions. [2023-04-01 06:38:57,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:57,562 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 553 transitions. [2023-04-01 06:38:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 06:38:57,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:57,563 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] [2023-04-01 06:38:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:38:57,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:57,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1310178090, now seen corresponding path program 1 times [2023-04-01 06:38:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636767768] [2023-04-01 06:38:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:57,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:57,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636767768] [2023-04-01 06:38:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636767768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:57,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:38:57,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730375412] [2023-04-01 06:38:57,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:57,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:38:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:38:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:38:57,815 INFO L87 Difference]: Start difference. First operand 446 states and 553 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:58,106 INFO L93 Difference]: Finished difference Result 763 states and 970 transitions. [2023-04-01 06:38:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:38:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 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 77 [2023-04-01 06:38:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:58,109 INFO L225 Difference]: With dead ends: 763 [2023-04-01 06:38:58,109 INFO L226 Difference]: Without dead ends: 408 [2023-04-01 06:38:58,110 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 [2023-04-01 06:38:58,111 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1451 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:58,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 307 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:38:58,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-04-01 06:38:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2023-04-01 06:38:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 389 states have (on average 1.3033419023136248) internal successors, (507), 404 states have internal predecessors, (507), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 510 transitions. [2023-04-01 06:38:58,136 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 510 transitions. Word has length 77 [2023-04-01 06:38:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:58,136 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 510 transitions. [2023-04-01 06:38:58,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 510 transitions. [2023-04-01 06:38:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 06:38:58,137 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:58,138 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] [2023-04-01 06:38:58,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:38:58,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:58,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash -35533686, now seen corresponding path program 1 times [2023-04-01 06:38:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495417935] [2023-04-01 06:38:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:58,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:58,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495417935] [2023-04-01 06:38:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495417935] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:38:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981178920] [2023-04-01 06:38:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:58,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:38:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:38:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:38:58,310 INFO L87 Difference]: Start difference. First operand 408 states and 510 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:58,624 INFO L93 Difference]: Finished difference Result 725 states and 926 transitions. [2023-04-01 06:38:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:38:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 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 78 [2023-04-01 06:38:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:58,626 INFO L225 Difference]: With dead ends: 725 [2023-04-01 06:38:58,626 INFO L226 Difference]: Without dead ends: 392 [2023-04-01 06:38:58,627 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 [2023-04-01 06:38:58,630 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1379 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:58,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 291 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:38:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-04-01 06:38:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2023-04-01 06:38:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 373 states have (on average 1.3083109919571045) internal successors, (488), 388 states have internal predecessors, (488), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 491 transitions. [2023-04-01 06:38:58,672 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 491 transitions. Word has length 78 [2023-04-01 06:38:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:58,674 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 491 transitions. [2023-04-01 06:38:58,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 491 transitions. [2023-04-01 06:38:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:38:58,676 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:58,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:38:58,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:38:58,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:58,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -275907722, now seen corresponding path program 1 times [2023-04-01 06:38:58,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:58,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771599025] [2023-04-01 06:38:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:58,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771599025] [2023-04-01 06:38:58,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771599025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:38:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113907613] [2023-04-01 06:38:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:38:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:38:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:38:58,849 INFO L87 Difference]: Start difference. First operand 392 states and 491 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:59,242 INFO L93 Difference]: Finished difference Result 902 states and 1151 transitions. [2023-04-01 06:38:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:38:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 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 79 [2023-04-01 06:38:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:59,246 INFO L225 Difference]: With dead ends: 902 [2023-04-01 06:38:59,246 INFO L226 Difference]: Without dead ends: 568 [2023-04-01 06:38:59,247 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 [2023-04-01 06:38:59,247 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1784 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:59,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 434 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:38:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-04-01 06:38:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 508. [2023-04-01 06:38:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3537832310838447) internal successors, (662), 504 states have internal predecessors, (662), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 665 transitions. [2023-04-01 06:38:59,288 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 665 transitions. Word has length 79 [2023-04-01 06:38:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:59,288 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 665 transitions. [2023-04-01 06:38:59,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 665 transitions. [2023-04-01 06:38:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:38:59,294 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:59,294 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] [2023-04-01 06:38:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:38:59,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:38:59,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1160143204, now seen corresponding path program 1 times [2023-04-01 06:38:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834329768] [2023-04-01 06:38:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:59,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:59,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834329768] [2023-04-01 06:38:59,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834329768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:59,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289168716] [2023-04-01 06:38:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:59,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:59,731 INFO L87 Difference]: Start difference. First operand 508 states and 665 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:00,539 INFO L93 Difference]: Finished difference Result 928 states and 1195 transitions. [2023-04-01 06:39:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 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 80 [2023-04-01 06:39:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:00,545 INFO L225 Difference]: With dead ends: 928 [2023-04-01 06:39:00,545 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:00,546 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 [2023-04-01 06:39:00,547 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2599 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:00,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 1223 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 508. [2023-04-01 06:39:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3517382413087935) internal successors, (661), 504 states have internal predecessors, (661), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 664 transitions. [2023-04-01 06:39:00,633 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 664 transitions. Word has length 80 [2023-04-01 06:39:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:00,635 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 664 transitions. [2023-04-01 06:39:00,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 664 transitions. [2023-04-01 06:39:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:39:00,636 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:00,637 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] [2023-04-01 06:39:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:39:00,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:00,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1063674467, now seen corresponding path program 1 times [2023-04-01 06:39:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486268786] [2023-04-01 06:39:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:01,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486268786] [2023-04-01 06:39:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486268786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:01,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:01,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:01,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026075074] [2023-04-01 06:39:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:01,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:01,007 INFO L87 Difference]: Start difference. First operand 508 states and 664 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:01,840 INFO L93 Difference]: Finished difference Result 945 states and 1227 transitions. [2023-04-01 06:39:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 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 80 [2023-04-01 06:39:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:01,844 INFO L225 Difference]: With dead ends: 945 [2023-04-01 06:39:01,844 INFO L226 Difference]: Without dead ends: 795 [2023-04-01 06:39:01,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:01,846 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1438 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:01,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1239 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-04-01 06:39:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 508. [2023-04-01 06:39:01,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3496932515337423) internal successors, (660), 504 states have internal predecessors, (660), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 663 transitions. [2023-04-01 06:39:01,910 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 663 transitions. Word has length 80 [2023-04-01 06:39:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:01,911 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 663 transitions. [2023-04-01 06:39:01,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 663 transitions. [2023-04-01 06:39:01,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:39:01,912 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:01,912 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] [2023-04-01 06:39:01,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:39:01,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:01,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:01,913 INFO L85 PathProgramCache]: Analyzing trace with hash -795367298, now seen corresponding path program 1 times [2023-04-01 06:39:01,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:01,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176272349] [2023-04-01 06:39:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:01,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:02,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176272349] [2023-04-01 06:39:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176272349] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:02,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:39:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443675418] [2023-04-01 06:39:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:02,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:39:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:39:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:39:02,362 INFO L87 Difference]: Start difference. First operand 508 states and 663 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:03,062 INFO L93 Difference]: Finished difference Result 931 states and 1174 transitions. [2023-04-01 06:39:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:39:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (2), 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 80 [2023-04-01 06:39:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:03,066 INFO L225 Difference]: With dead ends: 931 [2023-04-01 06:39:03,066 INFO L226 Difference]: Without dead ends: 697 [2023-04-01 06:39:03,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-04-01 06:39:03,067 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 2406 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:03,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 819 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-04-01 06:39:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 508. [2023-04-01 06:39:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3476482617586911) internal successors, (659), 504 states have internal predecessors, (659), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 662 transitions. [2023-04-01 06:39:03,148 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 662 transitions. Word has length 80 [2023-04-01 06:39:03,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:03,148 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 662 transitions. [2023-04-01 06:39:03,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 662 transitions. [2023-04-01 06:39:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:03,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:03,150 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] [2023-04-01 06:39:03,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:39:03,150 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:03,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash -258758141, now seen corresponding path program 1 times [2023-04-01 06:39:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001600372] [2023-04-01 06:39:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:03,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001600372] [2023-04-01 06:39:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001600372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:03,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:03,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634115141] [2023-04-01 06:39:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:03,607 INFO L87 Difference]: Start difference. First operand 508 states and 662 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:04,602 INFO L93 Difference]: Finished difference Result 1045 states and 1358 transitions. [2023-04-01 06:39:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:04,607 INFO L225 Difference]: With dead ends: 1045 [2023-04-01 06:39:04,607 INFO L226 Difference]: Without dead ends: 947 [2023-04-01 06:39:04,608 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 [2023-04-01 06:39:04,608 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2648 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:04,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2648 Valid, 1275 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-04-01 06:39:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2023-04-01 06:39:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3456032719836402) internal successors, (658), 504 states have internal predecessors, (658), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 661 transitions. [2023-04-01 06:39:04,702 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 661 transitions. Word has length 82 [2023-04-01 06:39:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:04,702 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 661 transitions. [2023-04-01 06:39:04,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 661 transitions. [2023-04-01 06:39:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:04,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:04,704 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] [2023-04-01 06:39:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:39:04,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:04,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash -388208886, now seen corresponding path program 1 times [2023-04-01 06:39:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:04,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321961263] [2023-04-01 06:39:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:05,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:05,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321961263] [2023-04-01 06:39:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321961263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705416031] [2023-04-01 06:39:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:05,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:05,113 INFO L87 Difference]: Start difference. First operand 508 states and 661 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:06,104 INFO L93 Difference]: Finished difference Result 1091 states and 1425 transitions. [2023-04-01 06:39:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:06,109 INFO L225 Difference]: With dead ends: 1091 [2023-04-01 06:39:06,109 INFO L226 Difference]: Without dead ends: 971 [2023-04-01 06:39:06,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:06,111 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 2144 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:06,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 1472 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:06,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-04-01 06:39:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 508. [2023-04-01 06:39:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.343558282208589) internal successors, (657), 504 states have internal predecessors, (657), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 660 transitions. [2023-04-01 06:39:06,199 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 660 transitions. Word has length 82 [2023-04-01 06:39:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:06,199 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 660 transitions. [2023-04-01 06:39:06,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 660 transitions. [2023-04-01 06:39:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:06,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:06,201 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] [2023-04-01 06:39:06,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:39:06,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:06,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1339857679, now seen corresponding path program 1 times [2023-04-01 06:39:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885917375] [2023-04-01 06:39:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:06,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:06,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885917375] [2023-04-01 06:39:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885917375] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:06,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426595753] [2023-04-01 06:39:06,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:06,583 INFO L87 Difference]: Start difference. First operand 508 states and 660 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:07,680 INFO L93 Difference]: Finished difference Result 1082 states and 1413 transitions. [2023-04-01 06:39:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:07,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:07,684 INFO L225 Difference]: With dead ends: 1082 [2023-04-01 06:39:07,684 INFO L226 Difference]: Without dead ends: 971 [2023-04-01 06:39:07,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:07,686 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1867 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:07,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 1546 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:39:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-04-01 06:39:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 508. [2023-04-01 06:39:07,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3415132924335378) internal successors, (656), 504 states have internal predecessors, (656), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 659 transitions. [2023-04-01 06:39:07,826 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 659 transitions. Word has length 82 [2023-04-01 06:39:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:07,827 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 659 transitions. [2023-04-01 06:39:07,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 659 transitions. [2023-04-01 06:39:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:07,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:07,828 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] [2023-04-01 06:39:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:39:07,829 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:07,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1183557608, now seen corresponding path program 1 times [2023-04-01 06:39:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345690969] [2023-04-01 06:39:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:08,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345690969] [2023-04-01 06:39:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345690969] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:08,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:08,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814572618] [2023-04-01 06:39:08,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:08,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:08,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:08,184 INFO L87 Difference]: Start difference. First operand 508 states and 659 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:09,237 INFO L93 Difference]: Finished difference Result 1041 states and 1351 transitions. [2023-04-01 06:39:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:09,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:09,241 INFO L225 Difference]: With dead ends: 1041 [2023-04-01 06:39:09,241 INFO L226 Difference]: Without dead ends: 947 [2023-04-01 06:39:09,242 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 [2023-04-01 06:39:09,242 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 2411 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:09,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 1433 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-04-01 06:39:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2023-04-01 06:39:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3394683026584866) internal successors, (655), 504 states have internal predecessors, (655), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 658 transitions. [2023-04-01 06:39:09,335 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 658 transitions. Word has length 82 [2023-04-01 06:39:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:09,335 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 658 transitions. [2023-04-01 06:39:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 658 transitions. [2023-04-01 06:39:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:09,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:09,337 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] [2023-04-01 06:39:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:39:09,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:09,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1152886497, now seen corresponding path program 1 times [2023-04-01 06:39:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584717152] [2023-04-01 06:39:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:09,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:09,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:09,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584717152] [2023-04-01 06:39:09,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584717152] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:09,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:09,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488332113] [2023-04-01 06:39:09,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:09,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:09,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:09,708 INFO L87 Difference]: Start difference. First operand 508 states and 658 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:10,779 INFO L93 Difference]: Finished difference Result 1051 states and 1362 transitions. [2023-04-01 06:39:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:10,783 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 06:39:10,783 INFO L226 Difference]: Without dead ends: 947 [2023-04-01 06:39:10,784 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 [2023-04-01 06:39:10,785 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 2401 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:10,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 1449 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-04-01 06:39:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2023-04-01 06:39:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3353783231083844) internal successors, (653), 504 states have internal predecessors, (653), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 656 transitions. [2023-04-01 06:39:10,885 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 656 transitions. Word has length 82 [2023-04-01 06:39:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:10,885 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 656 transitions. [2023-04-01 06:39:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 656 transitions. [2023-04-01 06:39:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:10,886 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:10,886 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] [2023-04-01 06:39:10,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:39:10,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:10,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1407013673, now seen corresponding path program 1 times [2023-04-01 06:39:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031526289] [2023-04-01 06:39:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:11,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031526289] [2023-04-01 06:39:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031526289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:11,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:11,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:11,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35482334] [2023-04-01 06:39:11,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:11,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:11,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:11,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:11,243 INFO L87 Difference]: Start difference. First operand 508 states and 656 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:12,303 INFO L93 Difference]: Finished difference Result 1101 states and 1433 transitions. [2023-04-01 06:39:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:12,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:12,308 INFO L225 Difference]: With dead ends: 1101 [2023-04-01 06:39:12,309 INFO L226 Difference]: Without dead ends: 971 [2023-04-01 06:39:12,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:12,310 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2120 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:12,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 1512 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-04-01 06:39:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 508. [2023-04-01 06:39:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3312883435582823) internal successors, (651), 504 states have internal predecessors, (651), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 654 transitions. [2023-04-01 06:39:12,410 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 654 transitions. Word has length 82 [2023-04-01 06:39:12,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:12,410 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 654 transitions. [2023-04-01 06:39:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 654 transitions. [2023-04-01 06:39:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 06:39:12,412 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:12,412 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] [2023-04-01 06:39:12,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 06:39:12,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:12,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1956123074, now seen corresponding path program 1 times [2023-04-01 06:39:12,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:12,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177693391] [2023-04-01 06:39:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:12,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177693391] [2023-04-01 06:39:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177693391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821180049] [2023-04-01 06:39:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:12,716 INFO L87 Difference]: Start difference. First operand 508 states and 654 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:13,459 INFO L93 Difference]: Finished difference Result 818 states and 1061 transitions. [2023-04-01 06:39:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 06:39:13,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-01 06:39:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:13,461 INFO L225 Difference]: With dead ends: 818 [2023-04-01 06:39:13,461 INFO L226 Difference]: Without dead ends: 602 [2023-04-01 06:39:13,462 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 [2023-04-01 06:39:13,462 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1047 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:13,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1199 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-04-01 06:39:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 508. [2023-04-01 06:39:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.32719836400818) internal successors, (649), 504 states have internal predecessors, (649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 652 transitions. [2023-04-01 06:39:13,541 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 652 transitions. Word has length 82 [2023-04-01 06:39:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:13,542 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 652 transitions. [2023-04-01 06:39:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 652 transitions. [2023-04-01 06:39:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:13,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:13,544 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] [2023-04-01 06:39:13,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 06:39:13,544 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:13,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1565404515, now seen corresponding path program 1 times [2023-04-01 06:39:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176923213] [2023-04-01 06:39:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:13,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176923213] [2023-04-01 06:39:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176923213] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284467547] [2023-04-01 06:39:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:13,834 INFO L87 Difference]: Start difference. First operand 508 states and 652 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:14,792 INFO L93 Difference]: Finished difference Result 1050 states and 1352 transitions. [2023-04-01 06:39:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:14,796 INFO L225 Difference]: With dead ends: 1050 [2023-04-01 06:39:14,796 INFO L226 Difference]: Without dead ends: 947 [2023-04-01 06:39:14,797 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 [2023-04-01 06:39:14,797 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1197 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:14,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1528 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-04-01 06:39:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 508. [2023-04-01 06:39:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3251533742331287) internal successors, (648), 504 states have internal predecessors, (648), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 651 transitions. [2023-04-01 06:39:14,890 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 651 transitions. Word has length 84 [2023-04-01 06:39:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:14,890 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 651 transitions. [2023-04-01 06:39:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 651 transitions. [2023-04-01 06:39:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:14,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:14,892 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] [2023-04-01 06:39:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 06:39:14,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:14,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 800406269, now seen corresponding path program 1 times [2023-04-01 06:39:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:14,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084420875] [2023-04-01 06:39:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:15,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084420875] [2023-04-01 06:39:15,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084420875] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:15,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460743990] [2023-04-01 06:39:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:15,200 INFO L87 Difference]: Start difference. First operand 508 states and 651 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:16,124 INFO L93 Difference]: Finished difference Result 1014 states and 1295 transitions. [2023-04-01 06:39:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:16,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:16,128 INFO L225 Difference]: With dead ends: 1014 [2023-04-01 06:39:16,128 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:16,129 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 [2023-04-01 06:39:16,129 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2386 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 1372 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 508. [2023-04-01 06:39:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3231083844580778) internal successors, (647), 504 states have internal predecessors, (647), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 650 transitions. [2023-04-01 06:39:16,225 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 650 transitions. Word has length 84 [2023-04-01 06:39:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:16,225 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 650 transitions. [2023-04-01 06:39:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 650 transitions. [2023-04-01 06:39:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:16,227 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:16,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 06:39:16,227 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:16,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1764318918, now seen corresponding path program 1 times [2023-04-01 06:39:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129174962] [2023-04-01 06:39:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:16,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:16,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129174962] [2023-04-01 06:39:16,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129174962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:16,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:16,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002859265] [2023-04-01 06:39:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:16,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:16,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:16,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:16,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:16,548 INFO L87 Difference]: Start difference. First operand 508 states and 650 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:17,585 INFO L93 Difference]: Finished difference Result 1011 states and 1291 transitions. [2023-04-01 06:39:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:17,589 INFO L225 Difference]: With dead ends: 1011 [2023-04-01 06:39:17,590 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:17,590 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 [2023-04-01 06:39:17,591 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 2281 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:17,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 1411 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 508. [2023-04-01 06:39:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.3210633946830266) internal successors, (646), 504 states have internal predecessors, (646), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 649 transitions. [2023-04-01 06:39:17,706 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 649 transitions. Word has length 84 [2023-04-01 06:39:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:17,706 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 649 transitions. [2023-04-01 06:39:17,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 649 transitions. [2023-04-01 06:39:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:17,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:17,707 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] [2023-04-01 06:39:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 06:39:17,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:17,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash -360808335, now seen corresponding path program 1 times [2023-04-01 06:39:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621474491] [2023-04-01 06:39:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:18,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621474491] [2023-04-01 06:39:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621474491] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:18,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630860027] [2023-04-01 06:39:18,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:18,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:18,390 INFO L87 Difference]: Start difference. First operand 508 states and 649 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:20,263 INFO L93 Difference]: Finished difference Result 1454 states and 1875 transitions. [2023-04-01 06:39:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:39:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:20,268 INFO L225 Difference]: With dead ends: 1454 [2023-04-01 06:39:20,268 INFO L226 Difference]: Without dead ends: 1363 [2023-04-01 06:39:20,269 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 [2023-04-01 06:39:20,269 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 3826 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 1600 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:39:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2023-04-01 06:39:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 512. [2023-04-01 06:39:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 493 states have (on average 1.3184584178498986) internal successors, (650), 508 states have internal predecessors, (650), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 653 transitions. [2023-04-01 06:39:20,382 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 653 transitions. Word has length 84 [2023-04-01 06:39:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 653 transitions. [2023-04-01 06:39:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 653 transitions. [2023-04-01 06:39:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:20,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:20,384 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] [2023-04-01 06:39:20,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 06:39:20,384 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:20,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:20,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1624973480, now seen corresponding path program 1 times [2023-04-01 06:39:20,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:20,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987209559] [2023-04-01 06:39:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:20,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:20,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:20,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987209559] [2023-04-01 06:39:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987209559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:20,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056309199] [2023-04-01 06:39:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:20,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:20,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:20,930 INFO L87 Difference]: Start difference. First operand 512 states and 653 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:22,903 INFO L93 Difference]: Finished difference Result 1454 states and 1877 transitions. [2023-04-01 06:39:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:39:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:22,908 INFO L225 Difference]: With dead ends: 1454 [2023-04-01 06:39:22,908 INFO L226 Difference]: Without dead ends: 1366 [2023-04-01 06:39:22,909 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 [2023-04-01 06:39:22,909 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 4085 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:22,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 1523 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:39:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-04-01 06:39:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 516. [2023-04-01 06:39:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.3158953722334004) internal successors, (654), 512 states have internal predecessors, (654), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 657 transitions. [2023-04-01 06:39:23,053 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 657 transitions. Word has length 84 [2023-04-01 06:39:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:23,053 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 657 transitions. [2023-04-01 06:39:23,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 657 transitions. [2023-04-01 06:39:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:23,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:23,055 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] [2023-04-01 06:39:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 06:39:23,055 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:23,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2087442158, now seen corresponding path program 1 times [2023-04-01 06:39:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:23,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579902321] [2023-04-01 06:39:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:23,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:23,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579902321] [2023-04-01 06:39:23,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579902321] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:23,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:23,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404164401] [2023-04-01 06:39:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:23,377 INFO L87 Difference]: Start difference. First operand 516 states and 657 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:24,505 INFO L93 Difference]: Finished difference Result 1009 states and 1286 transitions. [2023-04-01 06:39:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:24,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:24,508 INFO L225 Difference]: With dead ends: 1009 [2023-04-01 06:39:24,508 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:24,509 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 [2023-04-01 06:39:24,509 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2379 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:24,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 1361 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 516. [2023-04-01 06:39:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.3138832997987928) internal successors, (653), 512 states have internal predecessors, (653), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 656 transitions. [2023-04-01 06:39:24,656 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 656 transitions. Word has length 84 [2023-04-01 06:39:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:24,656 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 656 transitions. [2023-04-01 06:39:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 656 transitions. [2023-04-01 06:39:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:24,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:24,658 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] [2023-04-01 06:39:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 06:39:24,658 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:24,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -593275580, now seen corresponding path program 1 times [2023-04-01 06:39:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424291208] [2023-04-01 06:39:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:24,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:24,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424291208] [2023-04-01 06:39:24,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424291208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:24,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:24,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89921674] [2023-04-01 06:39:24,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:24,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:24,960 INFO L87 Difference]: Start difference. First operand 516 states and 656 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:25,997 INFO L93 Difference]: Finished difference Result 1011 states and 1287 transitions. [2023-04-01 06:39:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:26,001 INFO L225 Difference]: With dead ends: 1011 [2023-04-01 06:39:26,001 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:26,002 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 [2023-04-01 06:39:26,002 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2383 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:26,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 1338 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 516. [2023-04-01 06:39:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.311871227364185) internal successors, (652), 512 states have internal predecessors, (652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 655 transitions. [2023-04-01 06:39:26,160 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 655 transitions. Word has length 84 [2023-04-01 06:39:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:26,161 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 655 transitions. [2023-04-01 06:39:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 655 transitions. [2023-04-01 06:39:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:26,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:26,162 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] [2023-04-01 06:39:26,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 06:39:26,162 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:26,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1842541100, now seen corresponding path program 1 times [2023-04-01 06:39:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447455959] [2023-04-01 06:39:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:26,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447455959] [2023-04-01 06:39:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447455959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:26,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679281480] [2023-04-01 06:39:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:26,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:26,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:26,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:26,430 INFO L87 Difference]: Start difference. First operand 516 states and 655 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:27,501 INFO L93 Difference]: Finished difference Result 1053 states and 1346 transitions. [2023-04-01 06:39:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:27,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:27,508 INFO L225 Difference]: With dead ends: 1053 [2023-04-01 06:39:27,508 INFO L226 Difference]: Without dead ends: 955 [2023-04-01 06:39:27,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:27,509 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1141 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:27,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1577 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-04-01 06:39:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 516. [2023-04-01 06:39:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.3098591549295775) internal successors, (651), 512 states have internal predecessors, (651), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 654 transitions. [2023-04-01 06:39:27,681 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 654 transitions. Word has length 84 [2023-04-01 06:39:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:27,681 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 654 transitions. [2023-04-01 06:39:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 654 transitions. [2023-04-01 06:39:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:27,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:27,683 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] [2023-04-01 06:39:27,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 06:39:27,683 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:27,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash -134088359, now seen corresponding path program 1 times [2023-04-01 06:39:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660061529] [2023-04-01 06:39:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:27,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660061529] [2023-04-01 06:39:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660061529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247700487] [2023-04-01 06:39:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:27,948 INFO L87 Difference]: Start difference. First operand 516 states and 654 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:29,035 INFO L93 Difference]: Finished difference Result 972 states and 1235 transitions. [2023-04-01 06:39:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:29,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:29,038 INFO L225 Difference]: With dead ends: 972 [2023-04-01 06:39:29,038 INFO L226 Difference]: Without dead ends: 955 [2023-04-01 06:39:29,039 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 [2023-04-01 06:39:29,040 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1365 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:29,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 1569 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-04-01 06:39:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 516. [2023-04-01 06:39:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.3058350100603622) internal successors, (649), 512 states have internal predecessors, (649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 652 transitions. [2023-04-01 06:39:29,192 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 652 transitions. Word has length 84 [2023-04-01 06:39:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:29,192 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 652 transitions. [2023-04-01 06:39:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 652 transitions. [2023-04-01 06:39:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:29,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:29,194 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] [2023-04-01 06:39:29,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 06:39:29,194 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:29,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 250959802, now seen corresponding path program 1 times [2023-04-01 06:39:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252341033] [2023-04-01 06:39:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:29,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252341033] [2023-04-01 06:39:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252341033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:29,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641702848] [2023-04-01 06:39:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:29,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:29,533 INFO L87 Difference]: Start difference. First operand 516 states and 652 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:30,581 INFO L93 Difference]: Finished difference Result 928 states and 1171 transitions. [2023-04-01 06:39:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:30,584 INFO L225 Difference]: With dead ends: 928 [2023-04-01 06:39:30,584 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:30,585 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 [2023-04-01 06:39:30,585 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2259 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:30,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 1469 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 516. [2023-04-01 06:39:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.3018108651911469) internal successors, (647), 512 states have internal predecessors, (647), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 650 transitions. [2023-04-01 06:39:30,782 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 650 transitions. Word has length 84 [2023-04-01 06:39:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:30,783 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 650 transitions. [2023-04-01 06:39:30,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 650 transitions. [2023-04-01 06:39:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:30,786 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:30,786 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] [2023-04-01 06:39:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-01 06:39:30,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:30,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash 65359660, now seen corresponding path program 1 times [2023-04-01 06:39:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208227681] [2023-04-01 06:39:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:31,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:31,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208227681] [2023-04-01 06:39:31,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208227681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:31,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677166187] [2023-04-01 06:39:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:31,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:31,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:31,286 INFO L87 Difference]: Start difference. First operand 516 states and 650 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:33,307 INFO L93 Difference]: Finished difference Result 1378 states and 1764 transitions. [2023-04-01 06:39:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:39:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:33,311 INFO L225 Difference]: With dead ends: 1378 [2023-04-01 06:39:33,311 INFO L226 Difference]: Without dead ends: 1373 [2023-04-01 06:39:33,311 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 [2023-04-01 06:39:33,312 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 3241 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3241 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:33,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3241 Valid, 1632 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:39:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-04-01 06:39:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 524. [2023-04-01 06:39:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 505 states have (on average 1.297029702970297) internal successors, (655), 520 states have internal predecessors, (655), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 658 transitions. [2023-04-01 06:39:33,458 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 658 transitions. Word has length 84 [2023-04-01 06:39:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:33,458 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 658 transitions. [2023-04-01 06:39:33,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 658 transitions. [2023-04-01 06:39:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:33,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:33,459 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] [2023-04-01 06:39:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-01 06:39:33,460 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:33,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1339208724, now seen corresponding path program 1 times [2023-04-01 06:39:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908580957] [2023-04-01 06:39:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:33,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:33,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908580957] [2023-04-01 06:39:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908580957] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:33,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754850414] [2023-04-01 06:39:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:33,757 INFO L87 Difference]: Start difference. First operand 524 states and 658 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:34,808 INFO L93 Difference]: Finished difference Result 1013 states and 1281 transitions. [2023-04-01 06:39:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:34,811 INFO L225 Difference]: With dead ends: 1013 [2023-04-01 06:39:34,811 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:34,811 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 [2023-04-01 06:39:34,812 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2274 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:34,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 1433 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 524. [2023-04-01 06:39:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 505 states have (on average 1.293069306930693) internal successors, (653), 520 states have internal predecessors, (653), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 656 transitions. [2023-04-01 06:39:34,992 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 656 transitions. Word has length 84 [2023-04-01 06:39:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:34,992 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 656 transitions. [2023-04-01 06:39:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 656 transitions. [2023-04-01 06:39:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:34,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:34,993 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] [2023-04-01 06:39:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-01 06:39:34,994 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:34,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 31637021, now seen corresponding path program 1 times [2023-04-01 06:39:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940469453] [2023-04-01 06:39:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:35,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940469453] [2023-04-01 06:39:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940469453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665933607] [2023-04-01 06:39:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:35,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:35,284 INFO L87 Difference]: Start difference. First operand 524 states and 656 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:36,310 INFO L93 Difference]: Finished difference Result 1073 states and 1359 transitions. [2023-04-01 06:39:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:36,313 INFO L225 Difference]: With dead ends: 1073 [2023-04-01 06:39:36,313 INFO L226 Difference]: Without dead ends: 963 [2023-04-01 06:39:36,313 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 [2023-04-01 06:39:36,314 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2408 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:36,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 1483 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-04-01 06:39:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 524. [2023-04-01 06:39:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 505 states have (on average 1.2891089108910891) internal successors, (651), 520 states have internal predecessors, (651), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 654 transitions. [2023-04-01 06:39:36,465 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 654 transitions. Word has length 84 [2023-04-01 06:39:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:36,465 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 654 transitions. [2023-04-01 06:39:36,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 654 transitions. [2023-04-01 06:39:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:36,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:36,466 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] [2023-04-01 06:39:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-01 06:39:36,466 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:36,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1897519491, now seen corresponding path program 1 times [2023-04-01 06:39:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386189623] [2023-04-01 06:39:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:36,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:36,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386189623] [2023-04-01 06:39:36,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386189623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:36,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628614436] [2023-04-01 06:39:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:36,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:36,759 INFO L87 Difference]: Start difference. First operand 524 states and 654 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:37,799 INFO L93 Difference]: Finished difference Result 1017 states and 1282 transitions. [2023-04-01 06:39:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:37,802 INFO L225 Difference]: With dead ends: 1017 [2023-04-01 06:39:37,802 INFO L226 Difference]: Without dead ends: 923 [2023-04-01 06:39:37,802 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 [2023-04-01 06:39:37,803 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2201 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:37,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 1508 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-04-01 06:39:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 524. [2023-04-01 06:39:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 505 states have (on average 1.2851485148514852) internal successors, (649), 520 states have internal predecessors, (649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2023-04-01 06:39:37,953 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 84 [2023-04-01 06:39:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:37,953 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2023-04-01 06:39:37,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2023-04-01 06:39:37,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 06:39:37,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:37,955 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] [2023-04-01 06:39:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-01 06:39:37,955 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:37,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 614603927, now seen corresponding path program 1 times [2023-04-01 06:39:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692210712] [2023-04-01 06:39:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:38,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:38,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692210712] [2023-04-01 06:39:38,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692210712] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:38,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:38,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18778155] [2023-04-01 06:39:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:38,236 INFO L87 Difference]: Start difference. First operand 524 states and 652 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:39,413 INFO L93 Difference]: Finished difference Result 1141 states and 1451 transitions. [2023-04-01 06:39:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:39,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-01 06:39:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:39,416 INFO L225 Difference]: With dead ends: 1141 [2023-04-01 06:39:39,416 INFO L226 Difference]: Without dead ends: 991 [2023-04-01 06:39:39,417 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 [2023-04-01 06:39:39,418 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1532 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:39,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 2086 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states.