/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+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:05:16,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:05:16,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:05:16,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:05:16,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:05:16,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:05:16,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:05:16,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:05:16,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:05:16,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:05:16,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:05:16,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:05:16,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:05:16,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:05:16,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:05:16,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:05:16,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:05:16,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:05:16,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:05:16,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:05:16,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:05:16,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:05:16,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:05:16,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:05:16,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:05:16,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:05:16,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:05:16,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:05:16,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:05:16,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:05:16,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:05:16,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:05:16,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:05:16,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:05:16,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:05:16,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:05:16,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:05:16,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:05:16,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:05:16,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:05:16,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:05:16,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:05:16,661 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:05:16,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:05:16,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:05:16,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:05:16,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:05:16,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:05:16,663 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:05:16,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:05:16,664 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:05:16,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:05:16,664 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:05:16,664 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:05:16,664 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:05:16,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:05:16,665 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:05:16,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:05:16,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:05:16,665 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:05:16,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:05:16,666 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:05:16,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:05:16,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:05:16,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:05:16,668 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:05:16,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:05:16,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:05:16,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:05:16,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:05:16,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:05:16,669 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:05:16,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:05:16,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:05:16,669 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:05:16,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:05:16,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:05:16,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:05:16,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:05:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:05:16,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:05:16,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:05:16,904 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:05:16,905 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:05:16,906 INFO L432 ainManager$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+sep-reducer.c [2023-04-03 03:05:18,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:05:18,478 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:05:18,478 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+sep-reducer.c [2023-04-03 03:05:18,503 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7357326fc/e7ec4e0af11f45799f87013d6c188154/FLAG0a295ace5 [2023-04-03 03:05:18,519 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7357326fc/e7ec4e0af11f45799f87013d6c188154 [2023-04-03 03:05:18,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:05:18,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:05:18,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:05:18,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:05:18,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:05:18,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:05:18" (1/1) ... [2023-04-03 03:05:18,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11745931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:18, skipping insertion in model container [2023-04-03 03:05:18,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:05:18" (1/1) ... [2023-04-03 03:05:18,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:05:18,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:05:19,146 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+sep-reducer.c[37768,37781] [2023-04-03 03:05:19,234 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+sep-reducer.c[53783,53796] [2023-04-03 03:05:19,257 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+sep-reducer.c[61800,61813] [2023-04-03 03:05:19,276 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+sep-reducer.c[65782,65795] [2023-04-03 03:05:19,286 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69649,69662] [2023-04-03 03:05:19,327 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+sep-reducer.c[86712,86725] [2023-04-03 03:05:19,344 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+sep-reducer.c[94766,94779] [2023-04-03 03:05:19,353 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+sep-reducer.c[98785,98798] [2023-04-03 03:05:19,362 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+sep-reducer.c[102689,102702] [2023-04-03 03:05:19,372 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+sep-reducer.c[107203,107216] [2023-04-03 03:05:19,381 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+sep-reducer.c[111131,111144] [2023-04-03 03:05:19,390 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+sep-reducer.c[115150,115163] [2023-04-03 03:05:19,400 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+sep-reducer.c[119054,119067] [2023-04-03 03:05:19,410 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+sep-reducer.c[123189,123202] [2023-04-03 03:05:19,420 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+sep-reducer.c[127260,127273] [2023-04-03 03:05:19,431 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+sep-reducer.c[131260,131273] [2023-04-03 03:05:19,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:05:19,485 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:05:19,664 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+sep-reducer.c[37768,37781] [2023-04-03 03:05:19,753 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+sep-reducer.c[53783,53796] [2023-04-03 03:05:19,767 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+sep-reducer.c[61800,61813] [2023-04-03 03:05:19,779 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+sep-reducer.c[65782,65795] [2023-04-03 03:05:19,786 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+sep-reducer.c[69649,69662] [2023-04-03 03:05:19,817 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+sep-reducer.c[86712,86725] [2023-04-03 03:05:19,830 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+sep-reducer.c[94766,94779] [2023-04-03 03:05:19,837 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+sep-reducer.c[98785,98798] [2023-04-03 03:05:19,843 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+sep-reducer.c[102689,102702] [2023-04-03 03:05:19,850 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+sep-reducer.c[107203,107216] [2023-04-03 03:05:19,857 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+sep-reducer.c[111131,111144] [2023-04-03 03:05:19,863 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+sep-reducer.c[115150,115163] [2023-04-03 03:05:19,871 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+sep-reducer.c[119054,119067] [2023-04-03 03:05:19,878 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+sep-reducer.c[123189,123202] [2023-04-03 03:05:19,885 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+sep-reducer.c[127260,127273] [2023-04-03 03:05:19,893 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[131260,131273] [2023-04-03 03:05:19,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:05:19,940 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:05:19,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19 WrapperNode [2023-04-03 03:05:19,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:05:19,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:05:19,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:05:19,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:05:19,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:19,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:05:20,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:05:20,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:05:20,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:05:20,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (1/1) ... [2023-04-03 03:05:20,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:05:20,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:05:20,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:05:20,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:05:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:05:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:05:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:05:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:05:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:05:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:05:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:05:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:05:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:05:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:05:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:05:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:05:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:05:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:05:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:05:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:05:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:05:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:05:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:05:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:05:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:05:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:05:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:05:20,539 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:05:20,541 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:05:22,792 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:05:22,933 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:05:22,933 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:05:22,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:05:22 BoogieIcfgContainer [2023-04-03 03:05:22,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:05:22,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:05:22,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:05:22,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:05:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:05:18" (1/3) ... [2023-04-03 03:05:22,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0c6c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:05:22, skipping insertion in model container [2023-04-03 03:05:22,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:05:19" (2/3) ... [2023-04-03 03:05:22,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0c6c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:05:22, skipping insertion in model container [2023-04-03 03:05:22,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:05:22" (3/3) ... [2023-04-03 03:05:22,945 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2023-04-03 03:05:22,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:05:22,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-04-03 03:05:23,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:05:23,039 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;@6c35cf60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:05:23,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-04-03 03:05:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 1176 states, 1155 states have (on average 1.7696969696969698) internal successors, (2044), 1171 states have internal predecessors, (2044), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 03:05:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 03:05:23,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:23,072 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] [2023-04-03 03:05:23,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:23,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1635638329, now seen corresponding path program 1 times [2023-04-03 03:05:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:23,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033476314] [2023-04-03 03:05:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:23,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:23,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033476314] [2023-04-03 03:05:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033476314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:23,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:23,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:05:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825946785] [2023-04-03 03:05:23,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:23,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:05:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:05:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:05:23,870 INFO L87 Difference]: Start difference. First operand has 1176 states, 1155 states have (on average 1.7696969696969698) internal successors, (2044), 1171 states have internal predecessors, (2044), 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 14.6) 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) [2023-04-03 03:05:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:24,793 INFO L93 Difference]: Finished difference Result 1449 states and 2471 transitions. [2023-04-03 03:05:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:05:24,795 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 [2023-04-03 03:05:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:24,815 INFO L225 Difference]: With dead ends: 1449 [2023-04-03 03:05:24,815 INFO L226 Difference]: Without dead ends: 858 [2023-04-03 03:05:24,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:05:24,828 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 4258 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:24,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 874 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:05:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-04-03 03:05:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-04-03 03:05:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 839 states have (on average 1.2753277711561382) internal successors, (1070), 854 states have internal predecessors, (1070), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1073 transitions. [2023-04-03 03:05:24,911 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1073 transitions. Word has length 76 [2023-04-03 03:05:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:24,911 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1073 transitions. [2023-04-03 03:05:24,912 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) [2023-04-03 03:05:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1073 transitions. [2023-04-03 03:05:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 03:05:24,915 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:24,915 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] [2023-04-03 03:05:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:05:24,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:24,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2085289091, now seen corresponding path program 1 times [2023-04-03 03:05:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859712224] [2023-04-03 03:05:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:25,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859712224] [2023-04-03 03:05:25,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859712224] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:25,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:25,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:05:25,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036098203] [2023-04-03 03:05:25,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:05:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:05:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:05:25,149 INFO L87 Difference]: Start difference. First operand 858 states and 1073 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) [2023-04-03 03:05:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:25,629 INFO L93 Difference]: Finished difference Result 1047 states and 1296 transitions. [2023-04-03 03:05:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:05:25,629 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 [2023-04-03 03:05:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:25,632 INFO L225 Difference]: With dead ends: 1047 [2023-04-03 03:05:25,632 INFO L226 Difference]: Without dead ends: 632 [2023-04-03 03:05:25,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:05:25,634 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2286 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:25,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2286 Valid, 428 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:05:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-04-03 03:05:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2023-04-03 03:05:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 613 states have (on average 1.2838499184339316) internal successors, (787), 628 states have internal predecessors, (787), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 790 transitions. [2023-04-03 03:05:25,667 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 790 transitions. Word has length 76 [2023-04-03 03:05:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:25,668 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 790 transitions. [2023-04-03 03:05:25,668 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) [2023-04-03 03:05:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 790 transitions. [2023-04-03 03:05:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 03:05:25,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:25,670 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] [2023-04-03 03:05:25,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:05:25,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:25,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2050778462, now seen corresponding path program 1 times [2023-04-03 03:05:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:25,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126961912] [2023-04-03 03:05:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:25,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126961912] [2023-04-03 03:05:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126961912] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:25,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:05:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291254600] [2023-04-03 03:05:25,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:25,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:05:25,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:05:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:05:25,957 INFO L87 Difference]: Start difference. First operand 632 states and 790 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) [2023-04-03 03:05:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:26,524 INFO L93 Difference]: Finished difference Result 1170 states and 1475 transitions. [2023-04-03 03:05:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:05:26,529 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 [2023-04-03 03:05:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:26,535 INFO L225 Difference]: With dead ends: 1170 [2023-04-03 03:05:26,535 INFO L226 Difference]: Without dead ends: 844 [2023-04-03 03:05:26,536 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 [2023-04-03 03:05:26,538 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 2718 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:26,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 602 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-04-03 03:05:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 752. [2023-04-03 03:05:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 733 states have (on average 1.3315143246930423) internal successors, (976), 748 states have internal predecessors, (976), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 979 transitions. [2023-04-03 03:05:26,590 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 979 transitions. Word has length 76 [2023-04-03 03:05:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:26,591 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 979 transitions. [2023-04-03 03:05:26,591 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) [2023-04-03 03:05:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 979 transitions. [2023-04-03 03:05:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-03 03:05:26,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:26,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:26,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:05:26,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:26,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1020950525, now seen corresponding path program 1 times [2023-04-03 03:05:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:26,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518333546] [2023-04-03 03:05:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:26,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518333546] [2023-04-03 03:05:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518333546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:05:26,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039305059] [2023-04-03 03:05:26,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:05:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:05:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:05:26,875 INFO L87 Difference]: Start difference. First operand 752 states and 979 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) [2023-04-03 03:05:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:27,174 INFO L93 Difference]: Finished difference Result 922 states and 1175 transitions. [2023-04-03 03:05:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:05:27,175 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 [2023-04-03 03:05:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:27,177 INFO L225 Difference]: With dead ends: 922 [2023-04-03 03:05:27,177 INFO L226 Difference]: Without dead ends: 556 [2023-04-03 03:05:27,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:05:27,179 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1444 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:27,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 315 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:05:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-04-03 03:05:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2023-04-03 03:05:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 537 states have (on average 1.3277467411545625) internal successors, (713), 552 states have internal predecessors, (713), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 716 transitions. [2023-04-03 03:05:27,218 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 716 transitions. Word has length 78 [2023-04-03 03:05:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:27,218 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 716 transitions. [2023-04-03 03:05:27,219 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) [2023-04-03 03:05:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 716 transitions. [2023-04-03 03:05:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-03 03:05:27,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:27,220 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] [2023-04-03 03:05:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:05:27,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:27,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash -644825553, now seen corresponding path program 1 times [2023-04-03 03:05:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788862655] [2023-04-03 03:05:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:27,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:27,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788862655] [2023-04-03 03:05:27,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788862655] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:27,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:27,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:05:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671674709] [2023-04-03 03:05:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:05:27,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:05:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:05:27,401 INFO L87 Difference]: Start difference. First operand 556 states and 716 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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) [2023-04-03 03:05:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:27,723 INFO L93 Difference]: Finished difference Result 805 states and 1033 transitions. [2023-04-03 03:05:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:05:27,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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 [2023-04-03 03:05:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:27,726 INFO L225 Difference]: With dead ends: 805 [2023-04-03 03:05:27,726 INFO L226 Difference]: Without dead ends: 548 [2023-04-03 03:05:27,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:05:27,727 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1395 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:27,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 292 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:05:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-03 03:05:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2023-04-03 03:05:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3270321361058601) internal successors, (702), 544 states have internal predecessors, (702), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 705 transitions. [2023-04-03 03:05:27,800 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 705 transitions. Word has length 80 [2023-04-03 03:05:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:27,800 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 705 transitions. [2023-04-03 03:05:27,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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) [2023-04-03 03:05:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 705 transitions. [2023-04-03 03:05:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:27,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:27,802 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] [2023-04-03 03:05:27,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:05:27,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:27,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:27,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1486482593, now seen corresponding path program 1 times [2023-04-03 03:05:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:27,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680188302] [2023-04-03 03:05:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:28,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680188302] [2023-04-03 03:05:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680188302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:05:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808024225] [2023-04-03 03:05:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:05:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:05:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:05:28,375 INFO L87 Difference]: Start difference. First operand 548 states and 705 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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) [2023-04-03 03:05:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:29,463 INFO L93 Difference]: Finished difference Result 1160 states and 1503 transitions. [2023-04-03 03:05:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:05:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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 [2023-04-03 03:05:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:29,469 INFO L225 Difference]: With dead ends: 1160 [2023-04-03 03:05:29,470 INFO L226 Difference]: Without dead ends: 1025 [2023-04-03 03:05:29,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:05:29,472 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 2873 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:29,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 1992 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:05:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-04-03 03:05:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 548. [2023-04-03 03:05:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3232514177693762) internal successors, (700), 544 states have internal predecessors, (700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 703 transitions. [2023-04-03 03:05:29,532 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 703 transitions. Word has length 82 [2023-04-03 03:05:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:29,533 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 703 transitions. [2023-04-03 03:05:29,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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) [2023-04-03 03:05:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 703 transitions. [2023-04-03 03:05:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:29,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:29,537 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] [2023-04-03 03:05:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:05:29,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:29,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1611142047, now seen corresponding path program 1 times [2023-04-03 03:05:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739965930] [2023-04-03 03:05:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:30,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739965930] [2023-04-03 03:05:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739965930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:30,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:05:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318387882] [2023-04-03 03:05:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:30,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:05:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:05:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:05:30,111 INFO L87 Difference]: Start difference. First operand 548 states and 703 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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) [2023-04-03 03:05:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:31,042 INFO L93 Difference]: Finished difference Result 981 states and 1246 transitions. [2023-04-03 03:05:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:05:31,042 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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 [2023-04-03 03:05:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:31,046 INFO L225 Difference]: With dead ends: 981 [2023-04-03 03:05:31,046 INFO L226 Difference]: Without dead ends: 975 [2023-04-03 03:05:31,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:05:31,048 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1834 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:31,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1552 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:05:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-04-03 03:05:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 548. [2023-04-03 03:05:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3194706994328922) internal successors, (698), 544 states have internal predecessors, (698), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 701 transitions. [2023-04-03 03:05:31,143 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 701 transitions. Word has length 82 [2023-04-03 03:05:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:31,143 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 701 transitions. [2023-04-03 03:05:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 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) [2023-04-03 03:05:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 701 transitions. [2023-04-03 03:05:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:31,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:31,146 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] [2023-04-03 03:05:31,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:05:31,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:31,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2094434945, now seen corresponding path program 1 times [2023-04-03 03:05:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:31,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34832829] [2023-04-03 03:05:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:31,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:31,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34832829] [2023-04-03 03:05:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34832829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:31,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:05:31,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711194737] [2023-04-03 03:05:31,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:31,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:05:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:05:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:05:31,626 INFO L87 Difference]: Start difference. First operand 548 states and 701 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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) [2023-04-03 03:05:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:32,312 INFO L93 Difference]: Finished difference Result 1005 states and 1244 transitions. [2023-04-03 03:05:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:05:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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 [2023-04-03 03:05:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:32,315 INFO L225 Difference]: With dead ends: 1005 [2023-04-03 03:05:32,316 INFO L226 Difference]: Without dead ends: 755 [2023-04-03 03:05:32,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:05:32,318 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 2881 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:32,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2881 Valid, 697 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:05:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-04-03 03:05:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 548. [2023-04-03 03:05:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3175803402646502) internal successors, (697), 544 states have internal predecessors, (697), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 700 transitions. [2023-04-03 03:05:32,403 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 700 transitions. Word has length 82 [2023-04-03 03:05:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:32,403 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 700 transitions. [2023-04-03 03:05:32,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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) [2023-04-03 03:05:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 700 transitions. [2023-04-03 03:05:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:32,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:32,405 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] [2023-04-03 03:05:32,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:05:32,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:32,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash -163006433, now seen corresponding path program 1 times [2023-04-03 03:05:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720145546] [2023-04-03 03:05:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:32,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:32,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720145546] [2023-04-03 03:05:32,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720145546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:32,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:32,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630740129] [2023-04-03 03:05:32,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:32,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:32,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:32,809 INFO L87 Difference]: Start difference. First operand 548 states and 700 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) [2023-04-03 03:05:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:33,702 INFO L93 Difference]: Finished difference Result 989 states and 1249 transitions. [2023-04-03 03:05:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:33,702 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 [2023-04-03 03:05:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:33,706 INFO L225 Difference]: With dead ends: 989 [2023-04-03 03:05:33,706 INFO L226 Difference]: Without dead ends: 983 [2023-04-03 03:05:33,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:33,709 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 2108 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:33,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 1316 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-04-03 03:05:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 548. [2023-04-03 03:05:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3156899810964082) internal successors, (696), 544 states have internal predecessors, (696), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 699 transitions. [2023-04-03 03:05:33,799 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 699 transitions. Word has length 82 [2023-04-03 03:05:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:33,799 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 699 transitions. [2023-04-03 03:05:33,799 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) [2023-04-03 03:05:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 699 transitions. [2023-04-03 03:05:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:33,801 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:33,801 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] [2023-04-03 03:05:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:05:33,801 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:33,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash 123623775, now seen corresponding path program 1 times [2023-04-03 03:05:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:33,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445044641] [2023-04-03 03:05:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:34,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:34,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445044641] [2023-04-03 03:05:34,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445044641] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:34,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:34,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:05:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596109490] [2023-04-03 03:05:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:34,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:05:34,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:05:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:05:34,364 INFO L87 Difference]: Start difference. First operand 548 states and 699 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:35,518 INFO L93 Difference]: Finished difference Result 1129 states and 1426 transitions. [2023-04-03 03:05:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:05:35,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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 [2023-04-03 03:05:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:35,523 INFO L225 Difference]: With dead ends: 1129 [2023-04-03 03:05:35,523 INFO L226 Difference]: Without dead ends: 1037 [2023-04-03 03:05:35,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:05:35,524 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2079 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:35,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 1670 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:05:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-03 03:05:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 563. [2023-04-03 03:05:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 544 states have (on average 1.318014705882353) internal successors, (717), 559 states have internal predecessors, (717), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 720 transitions. [2023-04-03 03:05:35,616 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 720 transitions. Word has length 82 [2023-04-03 03:05:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:35,616 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 720 transitions. [2023-04-03 03:05:35,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 720 transitions. [2023-04-03 03:05:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:35,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:35,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:35,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:05:35,618 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:35,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash 992680767, now seen corresponding path program 1 times [2023-04-03 03:05:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091914820] [2023-04-03 03:05:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:36,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091914820] [2023-04-03 03:05:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091914820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:05:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18158669] [2023-04-03 03:05:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:05:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:05:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:05:36,219 INFO L87 Difference]: Start difference. First operand 563 states and 720 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:37,369 INFO L93 Difference]: Finished difference Result 1260 states and 1614 transitions. [2023-04-03 03:05:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 03:05:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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 [2023-04-03 03:05:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:37,375 INFO L225 Difference]: With dead ends: 1260 [2023-04-03 03:05:37,375 INFO L226 Difference]: Without dead ends: 1136 [2023-04-03 03:05:37,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-04-03 03:05:37,377 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 2666 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:37,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 2049 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:05:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-04-03 03:05:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 563. [2023-04-03 03:05:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 544 states have (on average 1.3161764705882353) internal successors, (716), 559 states have internal predecessors, (716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 719 transitions. [2023-04-03 03:05:37,492 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 719 transitions. Word has length 82 [2023-04-03 03:05:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:37,492 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 719 transitions. [2023-04-03 03:05:37,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 719 transitions. [2023-04-03 03:05:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 03:05:37,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:37,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:05:37,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:37,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash 237822207, now seen corresponding path program 1 times [2023-04-03 03:05:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218703376] [2023-04-03 03:05:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:38,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218703376] [2023-04-03 03:05:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218703376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:38,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:38,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:05:38,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822261644] [2023-04-03 03:05:38,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:05:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:05:38,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:05:38,052 INFO L87 Difference]: Start difference. First operand 563 states and 719 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:39,248 INFO L93 Difference]: Finished difference Result 1137 states and 1434 transitions. [2023-04-03 03:05:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:05:39,248 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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 [2023-04-03 03:05:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:39,252 INFO L225 Difference]: With dead ends: 1137 [2023-04-03 03:05:39,252 INFO L226 Difference]: Without dead ends: 1045 [2023-04-03 03:05:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:05:39,253 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2888 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:39,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2888 Valid, 1892 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:05:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-04-03 03:05:39,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 572. [2023-04-03 03:05:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 553 states have (on average 1.3164556962025316) internal successors, (728), 568 states have internal predecessors, (728), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 731 transitions. [2023-04-03 03:05:39,347 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 731 transitions. Word has length 82 [2023-04-03 03:05:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:39,347 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 731 transitions. [2023-04-03 03:05:39,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 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) [2023-04-03 03:05:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 731 transitions. [2023-04-03 03:05:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 03:05:39,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:39,349 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] [2023-04-03 03:05:39,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:05:39,349 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:39,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash -207506393, now seen corresponding path program 1 times [2023-04-03 03:05:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414084124] [2023-04-03 03:05:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:39,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:39,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414084124] [2023-04-03 03:05:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414084124] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806521494] [2023-04-03 03:05:39,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:39,731 INFO L87 Difference]: Start difference. First operand 572 states and 731 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:40,593 INFO L93 Difference]: Finished difference Result 1172 states and 1512 transitions. [2023-04-03 03:05:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 03:05:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:40,597 INFO L225 Difference]: With dead ends: 1172 [2023-04-03 03:05:40,597 INFO L226 Difference]: Without dead ends: 1057 [2023-04-03 03:05:40,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:40,599 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 2885 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2885 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:40,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2885 Valid, 1432 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-04-03 03:05:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 572. [2023-04-03 03:05:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 553 states have (on average 1.3146473779385173) internal successors, (727), 568 states have internal predecessors, (727), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 730 transitions. [2023-04-03 03:05:40,685 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 730 transitions. Word has length 83 [2023-04-03 03:05:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:40,685 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 730 transitions. [2023-04-03 03:05:40,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 730 transitions. [2023-04-03 03:05:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 03:05:40,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:40,687 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] [2023-04-03 03:05:40,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:05:40,687 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:40,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:40,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1489827015, now seen corresponding path program 1 times [2023-04-03 03:05:40,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:40,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108820006] [2023-04-03 03:05:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:40,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:41,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:41,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108820006] [2023-04-03 03:05:41,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108820006] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:41,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660984139] [2023-04-03 03:05:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:41,129 INFO L87 Difference]: Start difference. First operand 572 states and 730 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:41,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:41,947 INFO L93 Difference]: Finished difference Result 1101 states and 1395 transitions. [2023-04-03 03:05:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:41,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 03:05:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:41,951 INFO L225 Difference]: With dead ends: 1101 [2023-04-03 03:05:41,951 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 03:05:41,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:41,952 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1451 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:41,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1306 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 03:05:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 572. [2023-04-03 03:05:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 553 states have (on average 1.3128390596745028) internal successors, (726), 568 states have internal predecessors, (726), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 729 transitions. [2023-04-03 03:05:42,037 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 729 transitions. Word has length 83 [2023-04-03 03:05:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 729 transitions. [2023-04-03 03:05:42,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 729 transitions. [2023-04-03 03:05:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 03:05:42,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:42,039 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] [2023-04-03 03:05:42,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:05:42,039 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:42,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1852429913, now seen corresponding path program 1 times [2023-04-03 03:05:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112332677] [2023-04-03 03:05:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:42,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112332677] [2023-04-03 03:05:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112332677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:05:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067665616] [2023-04-03 03:05:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:05:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:05:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:05:42,646 INFO L87 Difference]: Start difference. First operand 572 states and 729 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:43,793 INFO L93 Difference]: Finished difference Result 1126 states and 1419 transitions. [2023-04-03 03:05:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:05:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 03:05:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:43,799 INFO L225 Difference]: With dead ends: 1126 [2023-04-03 03:05:43,799 INFO L226 Difference]: Without dead ends: 1037 [2023-04-03 03:05:43,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:05:43,802 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 2196 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:43,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 1843 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:05:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-03 03:05:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 574. [2023-04-03 03:05:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 555 states have (on average 1.3117117117117116) internal successors, (728), 570 states have internal predecessors, (728), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 731 transitions. [2023-04-03 03:05:43,923 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 731 transitions. Word has length 83 [2023-04-03 03:05:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:43,923 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 731 transitions. [2023-04-03 03:05:43,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 731 transitions. [2023-04-03 03:05:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 03:05:43,924 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:43,925 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] [2023-04-03 03:05:43,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:05:43,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:43,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash -668713369, now seen corresponding path program 1 times [2023-04-03 03:05:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840673012] [2023-04-03 03:05:43,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:43,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:44,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840673012] [2023-04-03 03:05:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840673012] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:44,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502217491] [2023-04-03 03:05:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:44,415 INFO L87 Difference]: Start difference. First operand 574 states and 731 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:45,355 INFO L93 Difference]: Finished difference Result 890 states and 1138 transitions. [2023-04-03 03:05:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 03:05:45,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 03:05:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:45,358 INFO L225 Difference]: With dead ends: 890 [2023-04-03 03:05:45,358 INFO L226 Difference]: Without dead ends: 732 [2023-04-03 03:05:45,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-03 03:05:45,359 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1673 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:45,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 1454 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:05:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-03 03:05:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 548. [2023-04-03 03:05:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3100189035916825) internal successors, (693), 544 states have internal predecessors, (693), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 696 transitions. [2023-04-03 03:05:45,460 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 696 transitions. Word has length 83 [2023-04-03 03:05:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:45,460 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 696 transitions. [2023-04-03 03:05:45,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 696 transitions. [2023-04-03 03:05:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:05:45,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:45,462 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] [2023-04-03 03:05:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:05:45,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:45,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -34292828, now seen corresponding path program 1 times [2023-04-03 03:05:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185360868] [2023-04-03 03:05:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:45,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185360868] [2023-04-03 03:05:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185360868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534280149] [2023-04-03 03:05:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:45,857 INFO L87 Difference]: Start difference. First operand 548 states and 696 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) [2023-04-03 03:05:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:46,746 INFO L93 Difference]: Finished difference Result 962 states and 1235 transitions. [2023-04-03 03:05:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 03:05:46,747 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 [2023-04-03 03:05:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:46,749 INFO L225 Difference]: With dead ends: 962 [2023-04-03 03:05:46,749 INFO L226 Difference]: Without dead ends: 732 [2023-04-03 03:05:46,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:05:46,751 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1513 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:46,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1794 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:05:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-03 03:05:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 548. [2023-04-03 03:05:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3062381852551985) internal successors, (691), 544 states have internal predecessors, (691), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 694 transitions. [2023-04-03 03:05:46,859 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 694 transitions. Word has length 84 [2023-04-03 03:05:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:46,859 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 694 transitions. [2023-04-03 03:05:46,859 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) [2023-04-03 03:05:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 694 transitions. [2023-04-03 03:05:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:05:46,861 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:46,861 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] [2023-04-03 03:05:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:05:46,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:46,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1510042052, now seen corresponding path program 1 times [2023-04-03 03:05:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274971287] [2023-04-03 03:05:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:47,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274971287] [2023-04-03 03:05:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274971287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:47,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:47,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893947066] [2023-04-03 03:05:47,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:47,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:47,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:47,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:47,182 INFO L87 Difference]: Start difference. First operand 548 states and 694 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) [2023-04-03 03:05:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:47,987 INFO L93 Difference]: Finished difference Result 1075 states and 1356 transitions. [2023-04-03 03:05:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:47,988 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 [2023-04-03 03:05:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:47,990 INFO L225 Difference]: With dead ends: 1075 [2023-04-03 03:05:47,990 INFO L226 Difference]: Without dead ends: 983 [2023-04-03 03:05:47,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:47,991 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 2723 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:47,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 1334 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-04-03 03:05:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 548. [2023-04-03 03:05:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3043478260869565) internal successors, (690), 544 states have internal predecessors, (690), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 693 transitions. [2023-04-03 03:05:48,115 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 693 transitions. Word has length 84 [2023-04-03 03:05:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:48,115 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 693 transitions. [2023-04-03 03:05:48,115 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) [2023-04-03 03:05:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 693 transitions. [2023-04-03 03:05:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:05:48,117 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:48,117 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] [2023-04-03 03:05:48,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:05:48,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:48,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1915868252, now seen corresponding path program 1 times [2023-04-03 03:05:48,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:48,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538196683] [2023-04-03 03:05:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:48,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:48,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538196683] [2023-04-03 03:05:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538196683] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:48,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904729134] [2023-04-03 03:05:48,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:48,455 INFO L87 Difference]: Start difference. First operand 548 states and 693 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) [2023-04-03 03:05:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:49,388 INFO L93 Difference]: Finished difference Result 1157 states and 1482 transitions. [2023-04-03 03:05:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:49,388 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 [2023-04-03 03:05:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:49,391 INFO L225 Difference]: With dead ends: 1157 [2023-04-03 03:05:49,391 INFO L226 Difference]: Without dead ends: 1033 [2023-04-03 03:05:49,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:49,392 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1818 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:49,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 1840 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:05:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2023-04-03 03:05:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 548. [2023-04-03 03:05:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3024574669187146) internal successors, (689), 544 states have internal predecessors, (689), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 692 transitions. [2023-04-03 03:05:49,514 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 692 transitions. Word has length 84 [2023-04-03 03:05:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:49,516 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 692 transitions. [2023-04-03 03:05:49,517 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) [2023-04-03 03:05:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 692 transitions. [2023-04-03 03:05:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:05:49,518 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:49,519 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] [2023-04-03 03:05:49,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:05:49,519 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:49,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1624240484, now seen corresponding path program 1 times [2023-04-03 03:05:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895464404] [2023-04-03 03:05:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:49,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:49,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895464404] [2023-04-03 03:05:49,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895464404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:49,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:49,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388612317] [2023-04-03 03:05:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:49,860 INFO L87 Difference]: Start difference. First operand 548 states and 692 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) [2023-04-03 03:05:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:50,656 INFO L93 Difference]: Finished difference Result 1075 states and 1354 transitions. [2023-04-03 03:05:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:50,657 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 [2023-04-03 03:05:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:50,659 INFO L225 Difference]: With dead ends: 1075 [2023-04-03 03:05:50,660 INFO L226 Difference]: Without dead ends: 983 [2023-04-03 03:05:50,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:50,661 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1425 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:50,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1334 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:05:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-04-03 03:05:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 548. [2023-04-03 03:05:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 529 states have (on average 1.3005671077504726) internal successors, (688), 544 states have internal predecessors, (688), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 691 transitions. [2023-04-03 03:05:50,786 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 691 transitions. Word has length 84 [2023-04-03 03:05:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 691 transitions. [2023-04-03 03:05:50,787 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) [2023-04-03 03:05:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 691 transitions. [2023-04-03 03:05:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 03:05:50,788 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:50,788 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] [2023-04-03 03:05:50,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:05:50,788 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:50,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1736501813, now seen corresponding path program 1 times [2023-04-03 03:05:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269456929] [2023-04-03 03:05:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:50,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:51,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269456929] [2023-04-03 03:05:51,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269456929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:51,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204613326] [2023-04-03 03:05:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:51,133 INFO L87 Difference]: Start difference. First operand 548 states and 691 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) [2023-04-03 03:05:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:51,965 INFO L93 Difference]: Finished difference Result 1069 states and 1346 transitions. [2023-04-03 03:05:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:51,965 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 [2023-04-03 03:05:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:51,968 INFO L225 Difference]: With dead ends: 1069 [2023-04-03 03:05:51,968 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:05:51,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:51,969 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2080 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:51,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 1313 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:05:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:05:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:05:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2992424242424243) internal successors, (686), 543 states have internal predecessors, (686), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 689 transitions. [2023-04-03 03:05:52,108 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 689 transitions. Word has length 84 [2023-04-03 03:05:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:52,108 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 689 transitions. [2023-04-03 03:05:52,108 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) [2023-04-03 03:05:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 689 transitions. [2023-04-03 03:05:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:52,109 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:52,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:05:52,110 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:52,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1610320830, now seen corresponding path program 1 times [2023-04-03 03:05:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:52,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307517636] [2023-04-03 03:05:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:52,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307517636] [2023-04-03 03:05:52,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307517636] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:52,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:52,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:52,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462764549] [2023-04-03 03:05:52,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:52,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:52,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:52,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:52,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:52,498 INFO L87 Difference]: Start difference. First operand 547 states and 689 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:53,429 INFO L93 Difference]: Finished difference Result 1113 states and 1413 transitions. [2023-04-03 03:05:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:05:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:53,432 INFO L225 Difference]: With dead ends: 1113 [2023-04-03 03:05:53,432 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:05:53,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:05:53,434 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2590 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:53,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 1612 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:05:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:05:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2954545454545454) internal successors, (684), 543 states have internal predecessors, (684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 687 transitions. [2023-04-03 03:05:53,539 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 687 transitions. Word has length 85 [2023-04-03 03:05:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:53,539 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 687 transitions. [2023-04-03 03:05:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 687 transitions. [2023-04-03 03:05:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:53,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:53,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:53,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:05:53,541 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:53,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 417066818, now seen corresponding path program 1 times [2023-04-03 03:05:53,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:53,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543797391] [2023-04-03 03:05:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:53,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:53,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543797391] [2023-04-03 03:05:53,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543797391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:53,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:53,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608377900] [2023-04-03 03:05:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:53,877 INFO L87 Difference]: Start difference. First operand 547 states and 687 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:54,830 INFO L93 Difference]: Finished difference Result 1074 states and 1348 transitions. [2023-04-03 03:05:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:05:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:54,833 INFO L225 Difference]: With dead ends: 1074 [2023-04-03 03:05:54,834 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:05:54,834 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 [2023-04-03 03:05:54,835 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1394 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1356 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:05:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:05:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2916666666666667) internal successors, (682), 543 states have internal predecessors, (682), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 685 transitions. [2023-04-03 03:05:54,953 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 685 transitions. Word has length 85 [2023-04-03 03:05:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:54,954 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 685 transitions. [2023-04-03 03:05:54,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 685 transitions. [2023-04-03 03:05:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:54,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:54,955 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, 1] [2023-04-03 03:05:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:05:54,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:54,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1823136286, now seen corresponding path program 1 times [2023-04-03 03:05:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587135649] [2023-04-03 03:05:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:55,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587135649] [2023-04-03 03:05:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587135649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:55,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:55,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:55,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012188663] [2023-04-03 03:05:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:55,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:55,291 INFO L87 Difference]: Start difference. First operand 547 states and 685 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:56,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:56,157 INFO L93 Difference]: Finished difference Result 1071 states and 1343 transitions. [2023-04-03 03:05:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:05:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:56,159 INFO L225 Difference]: With dead ends: 1071 [2023-04-03 03:05:56,160 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:05:56,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:56,160 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2006 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:56,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 1349 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:05:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:05:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:05:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2897727272727273) internal successors, (681), 543 states have internal predecessors, (681), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 684 transitions. [2023-04-03 03:05:56,313 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 684 transitions. Word has length 85 [2023-04-03 03:05:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:56,314 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 684 transitions. [2023-04-03 03:05:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 684 transitions. [2023-04-03 03:05:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:56,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:56,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:56,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:05:56,315 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:56,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash -639419742, now seen corresponding path program 1 times [2023-04-03 03:05:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492669454] [2023-04-03 03:05:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:56,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492669454] [2023-04-03 03:05:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492669454] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:56,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705314459] [2023-04-03 03:05:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:56,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:56,669 INFO L87 Difference]: Start difference. First operand 547 states and 684 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:57,728 INFO L93 Difference]: Finished difference Result 1106 states and 1400 transitions. [2023-04-03 03:05:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:05:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:57,731 INFO L225 Difference]: With dead ends: 1106 [2023-04-03 03:05:57,731 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:05:57,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:05:57,732 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2292 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:57,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 1760 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:05:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:05:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:05:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2878787878787878) internal successors, (680), 543 states have internal predecessors, (680), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 683 transitions. [2023-04-03 03:05:57,856 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 683 transitions. Word has length 85 [2023-04-03 03:05:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:57,856 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 683 transitions. [2023-04-03 03:05:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 683 transitions. [2023-04-03 03:05:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:57,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:57,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:05:57,858 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:57,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash -496562654, now seen corresponding path program 1 times [2023-04-03 03:05:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749906949] [2023-04-03 03:05:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:58,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749906949] [2023-04-03 03:05:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749906949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626067492] [2023-04-03 03:05:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:58,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:58,202 INFO L87 Difference]: Start difference. First operand 547 states and 683 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:05:59,128 INFO L93 Difference]: Finished difference Result 1106 states and 1398 transitions. [2023-04-03 03:05:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:05:59,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:05:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:05:59,131 INFO L225 Difference]: With dead ends: 1106 [2023-04-03 03:05:59,131 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:05:59,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:05:59,132 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1879 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:05:59,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1686 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:05:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:05:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:05:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2859848484848484) internal successors, (679), 543 states have internal predecessors, (679), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 682 transitions. [2023-04-03 03:05:59,255 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 682 transitions. Word has length 85 [2023-04-03 03:05:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:05:59,255 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 682 transitions. [2023-04-03 03:05:59,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:05:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 682 transitions. [2023-04-03 03:05:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:05:59,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:05:59,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:05:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:05:59,257 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:05:59,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:05:59,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2084066174, now seen corresponding path program 1 times [2023-04-03 03:05:59,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:05:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90181389] [2023-04-03 03:05:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:05:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:05:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:05:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:05:59,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:05:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90181389] [2023-04-03 03:05:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90181389] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:05:59,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:05:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:05:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711448705] [2023-04-03 03:05:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:05:59,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:05:59,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:05:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:05:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:05:59,546 INFO L87 Difference]: Start difference. First operand 547 states and 682 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:00,443 INFO L93 Difference]: Finished difference Result 1071 states and 1340 transitions. [2023-04-03 03:06:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:00,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:06:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:00,446 INFO L225 Difference]: With dead ends: 1071 [2023-04-03 03:06:00,446 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:06:00,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:00,447 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1348 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:00,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1438 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:06:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:06:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:06:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2840909090909092) internal successors, (678), 543 states have internal predecessors, (678), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 681 transitions. [2023-04-03 03:06:00,580 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 681 transitions. Word has length 85 [2023-04-03 03:06:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:00,581 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 681 transitions. [2023-04-03 03:06:00,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 681 transitions. [2023-04-03 03:06:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:06:00,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:00,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:00,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:06:00,582 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:00,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 536941922, now seen corresponding path program 1 times [2023-04-03 03:06:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:00,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374645715] [2023-04-03 03:06:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:00,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374645715] [2023-04-03 03:06:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374645715] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:00,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:00,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492406962] [2023-04-03 03:06:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:00,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:00,913 INFO L87 Difference]: Start difference. First operand 547 states and 681 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:01,919 INFO L93 Difference]: Finished difference Result 1102 states and 1391 transitions. [2023-04-03 03:06:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:01,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 03:06:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:01,922 INFO L225 Difference]: With dead ends: 1102 [2023-04-03 03:06:01,922 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:06:01,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:06:01,923 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 2371 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:01,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 1707 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:06:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:06:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2821969696969697) internal successors, (677), 543 states have internal predecessors, (677), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 680 transitions. [2023-04-03 03:06:02,050 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 680 transitions. Word has length 85 [2023-04-03 03:06:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:02,050 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 680 transitions. [2023-04-03 03:06:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 680 transitions. [2023-04-03 03:06:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:02,051 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:02,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:06:02,051 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:02,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash -201663319, now seen corresponding path program 1 times [2023-04-03 03:06:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496093725] [2023-04-03 03:06:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:02,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496093725] [2023-04-03 03:06:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496093725] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:02,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:02,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:02,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998245171] [2023-04-03 03:06:02,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:02,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:02,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:02,443 INFO L87 Difference]: Start difference. First operand 547 states and 680 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:03,458 INFO L93 Difference]: Finished difference Result 1119 states and 1411 transitions. [2023-04-03 03:06:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:03,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:03,461 INFO L225 Difference]: With dead ends: 1119 [2023-04-03 03:06:03,462 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:06:03,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:06:03,463 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2549 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:03,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 1631 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:06:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:06:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2784090909090908) internal successors, (675), 543 states have internal predecessors, (675), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 678 transitions. [2023-04-03 03:06:03,601 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 678 transitions. Word has length 86 [2023-04-03 03:06:03,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:03,601 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 678 transitions. [2023-04-03 03:06:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 678 transitions. [2023-04-03 03:06:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:03,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:03,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:06:03,602 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:03,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2013045623, now seen corresponding path program 1 times [2023-04-03 03:06:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618054135] [2023-04-03 03:06:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:03,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618054135] [2023-04-03 03:06:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618054135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:03,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503132676] [2023-04-03 03:06:03,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:03,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:03,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:03,909 INFO L87 Difference]: Start difference. First operand 547 states and 678 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:04,911 INFO L93 Difference]: Finished difference Result 1078 states and 1344 transitions. [2023-04-03 03:06:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:04,914 INFO L225 Difference]: With dead ends: 1078 [2023-04-03 03:06:04,914 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:06:04,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:04,915 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1522 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:04,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1530 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:06:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:06:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2746212121212122) internal successors, (673), 543 states have internal predecessors, (673), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 676 transitions. [2023-04-03 03:06:05,047 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 676 transitions. Word has length 86 [2023-04-03 03:06:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:05,047 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 676 transitions. [2023-04-03 03:06:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 676 transitions. [2023-04-03 03:06:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:05,048 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:05,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:06:05,048 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:05,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1421591881, now seen corresponding path program 1 times [2023-04-03 03:06:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440197439] [2023-04-03 03:06:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:05,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440197439] [2023-04-03 03:06:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440197439] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30968894] [2023-04-03 03:06:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:05,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:05,351 INFO L87 Difference]: Start difference. First operand 547 states and 676 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:06,505 INFO L93 Difference]: Finished difference Result 1189 states and 1500 transitions. [2023-04-03 03:06:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:06,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:06,508 INFO L225 Difference]: With dead ends: 1189 [2023-04-03 03:06:06,508 INFO L226 Difference]: Without dead ends: 1032 [2023-04-03 03:06:06,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:06,510 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1647 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:06,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 1902 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:06:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-04-03 03:06:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 547. [2023-04-03 03:06:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2708333333333333) internal successors, (671), 543 states have internal predecessors, (671), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 674 transitions. [2023-04-03 03:06:06,659 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 674 transitions. Word has length 86 [2023-04-03 03:06:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:06,659 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 674 transitions. [2023-04-03 03:06:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 674 transitions. [2023-04-03 03:06:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:06,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:06,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:06:06,661 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:06,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash -435264311, now seen corresponding path program 1 times [2023-04-03 03:06:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:06,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6406468] [2023-04-03 03:06:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:06,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6406468] [2023-04-03 03:06:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6406468] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356408686] [2023-04-03 03:06:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:06,969 INFO L87 Difference]: Start difference. First operand 547 states and 674 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:08,104 INFO L93 Difference]: Finished difference Result 1025 states and 1278 transitions. [2023-04-03 03:06:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:08,106 INFO L225 Difference]: With dead ends: 1025 [2023-04-03 03:06:08,106 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:06:08,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:08,107 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1604 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:08,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1900 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:06:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:06:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:06:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2670454545454546) internal successors, (669), 543 states have internal predecessors, (669), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 672 transitions. [2023-04-03 03:06:08,270 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 672 transitions. Word has length 86 [2023-04-03 03:06:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 672 transitions. [2023-04-03 03:06:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 672 transitions. [2023-04-03 03:06:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:08,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:08,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:08,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:06:08,272 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:08,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 413250857, now seen corresponding path program 1 times [2023-04-03 03:06:08,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:08,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019816841] [2023-04-03 03:06:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:08,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019816841] [2023-04-03 03:06:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019816841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013270936] [2023-04-03 03:06:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:08,537 INFO L87 Difference]: Start difference. First operand 547 states and 672 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:09,572 INFO L93 Difference]: Finished difference Result 988 states and 1218 transitions. [2023-04-03 03:06:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:09,574 INFO L225 Difference]: With dead ends: 988 [2023-04-03 03:06:09,574 INFO L226 Difference]: Without dead ends: 982 [2023-04-03 03:06:09,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:09,575 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 2337 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:09,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 1597 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-03 03:06:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 547. [2023-04-03 03:06:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2632575757575757) internal successors, (667), 543 states have internal predecessors, (667), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 670 transitions. [2023-04-03 03:06:09,715 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 670 transitions. Word has length 86 [2023-04-03 03:06:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:09,716 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 670 transitions. [2023-04-03 03:06:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 670 transitions. [2023-04-03 03:06:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:06:09,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:09,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:09,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:06:09,717 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:09,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:09,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1528594825, now seen corresponding path program 1 times [2023-04-03 03:06:09,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338984510] [2023-04-03 03:06:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:09,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:09,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:09,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338984510] [2023-04-03 03:06:09,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338984510] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:09,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:09,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:09,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719288532] [2023-04-03 03:06:09,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:09,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:09,992 INFO L87 Difference]: Start difference. First operand 547 states and 670 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:11,040 INFO L93 Difference]: Finished difference Result 1111 states and 1385 transitions. [2023-04-03 03:06:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 03:06:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:11,042 INFO L225 Difference]: With dead ends: 1111 [2023-04-03 03:06:11,042 INFO L226 Difference]: Without dead ends: 1006 [2023-04-03 03:06:11,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:11,043 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1140 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:11,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1858 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-04-03 03:06:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 547. [2023-04-03 03:06:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.2613636363636365) internal successors, (666), 543 states have internal predecessors, (666), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 669 transitions. [2023-04-03 03:06:11,201 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 669 transitions. Word has length 86 [2023-04-03 03:06:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:11,201 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 669 transitions. [2023-04-03 03:06:11,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 669 transitions. [2023-04-03 03:06:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 03:06:11,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:11,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:06:11,202 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:11,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1732439555, now seen corresponding path program 1 times [2023-04-03 03:06:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265615270] [2023-04-03 03:06:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:11,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265615270] [2023-04-03 03:06:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265615270] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:11,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429942075] [2023-04-03 03:06:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:11,921 INFO L87 Difference]: Start difference. First operand 547 states and 669 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:13,594 INFO L93 Difference]: Finished difference Result 1285 states and 1617 transitions. [2023-04-03 03:06:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 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 87 [2023-04-03 03:06:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:13,596 INFO L225 Difference]: With dead ends: 1285 [2023-04-03 03:06:13,596 INFO L226 Difference]: Without dead ends: 1177 [2023-04-03 03:06:13,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:13,597 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 2029 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:13,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 4352 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:06:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-04-03 03:06:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 525. [2023-04-03 03:06:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 507 states have (on average 1.2564102564102564) internal successors, (637), 521 states have internal predecessors, (637), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 640 transitions. [2023-04-03 03:06:13,782 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 640 transitions. Word has length 87 [2023-04-03 03:06:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:13,782 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 640 transitions. [2023-04-03 03:06:13,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 640 transitions. [2023-04-03 03:06:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 03:06:13,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:13,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:06:13,784 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:13,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash 469344925, now seen corresponding path program 1 times [2023-04-03 03:06:13,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:13,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453036388] [2023-04-03 03:06:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:14,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453036388] [2023-04-03 03:06:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453036388] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:14,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777109397] [2023-04-03 03:06:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:14,469 INFO L87 Difference]: Start difference. First operand 525 states and 640 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:15,474 INFO L93 Difference]: Finished difference Result 913 states and 1119 transitions. [2023-04-03 03:06:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 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 87 [2023-04-03 03:06:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:15,476 INFO L225 Difference]: With dead ends: 913 [2023-04-03 03:06:15,476 INFO L226 Difference]: Without dead ends: 810 [2023-04-03 03:06:15,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:15,477 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1912 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:15,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 3226 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:06:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-04-03 03:06:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 501. [2023-04-03 03:06:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 484 states have (on average 1.2541322314049588) internal successors, (607), 497 states have internal predecessors, (607), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 610 transitions. [2023-04-03 03:06:15,641 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 610 transitions. Word has length 87 [2023-04-03 03:06:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:15,641 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 610 transitions. [2023-04-03 03:06:15,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 610 transitions. [2023-04-03 03:06:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 03:06:15,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:15,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:06:15,642 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:15,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 370911261, now seen corresponding path program 1 times [2023-04-03 03:06:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825089347] [2023-04-03 03:06:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:17,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825089347] [2023-04-03 03:06:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825089347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-03 03:06:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364750234] [2023-04-03 03:06:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-03 03:06:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-03 03:06:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2023-04-03 03:06:17,098 INFO L87 Difference]: Start difference. First operand 501 states and 610 transitions. Second operand has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:21,576 INFO L93 Difference]: Finished difference Result 1160 states and 1420 transitions. [2023-04-03 03:06:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-03 03:06:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 1 states have call successors, (2), 1 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 87 [2023-04-03 03:06:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:21,577 INFO L225 Difference]: With dead ends: 1160 [2023-04-03 03:06:21,577 INFO L226 Difference]: Without dead ends: 1070 [2023-04-03 03:06:21,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=386, Invalid=2266, Unknown=0, NotChecked=0, Total=2652 [2023-04-03 03:06:21,579 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 2675 mSDsluCounter, 11975 mSDsCounter, 0 mSdLazyCounter, 6285 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 6330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 6285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:21,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 12802 Invalid, 6330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 6285 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-03 03:06:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2023-04-03 03:06:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 501. [2023-04-03 03:06:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 484 states have (on average 1.25) internal successors, (605), 497 states have internal predecessors, (605), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 608 transitions. [2023-04-03 03:06:21,754 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 608 transitions. Word has length 87 [2023-04-03 03:06:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:21,754 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 608 transitions. [2023-04-03 03:06:21,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 608 transitions. [2023-04-03 03:06:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 03:06:21,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:21,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:06:21,756 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:21,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2078011555, now seen corresponding path program 1 times [2023-04-03 03:06:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157725599] [2023-04-03 03:06:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:22,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157725599] [2023-04-03 03:06:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157725599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:22,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863054289] [2023-04-03 03:06:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:22,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:22,280 INFO L87 Difference]: Start difference. First operand 501 states and 608 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:23,117 INFO L93 Difference]: Finished difference Result 885 states and 1104 transitions. [2023-04-03 03:06:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:06:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 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 87 [2023-04-03 03:06:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:23,119 INFO L225 Difference]: With dead ends: 885 [2023-04-03 03:06:23,119 INFO L226 Difference]: Without dead ends: 717 [2023-04-03 03:06:23,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:06:23,120 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1867 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:23,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 3473 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-03 03:06:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 419. [2023-04-03 03:06:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 405 states have (on average 1.2493827160493827) internal successors, (506), 415 states have internal predecessors, (506), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 509 transitions. [2023-04-03 03:06:23,312 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 509 transitions. Word has length 87 [2023-04-03 03:06:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:23,312 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 509 transitions. [2023-04-03 03:06:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 509 transitions. [2023-04-03 03:06:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 03:06:23,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:23,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:06:23,313 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:23,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 772317597, now seen corresponding path program 1 times [2023-04-03 03:06:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:23,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501463704] [2023-04-03 03:06:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:23,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:23,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501463704] [2023-04-03 03:06:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501463704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:06:23,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694888025] [2023-04-03 03:06:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:06:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:06:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:06:23,786 INFO L87 Difference]: Start difference. First operand 419 states and 509 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:24,646 INFO L93 Difference]: Finished difference Result 759 states and 924 transitions. [2023-04-03 03:06:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:06:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (2), 1 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 87 [2023-04-03 03:06:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:24,647 INFO L225 Difference]: With dead ends: 759 [2023-04-03 03:06:24,647 INFO L226 Difference]: Without dead ends: 541 [2023-04-03 03:06:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:06:24,648 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1222 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:24,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1342 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-04-03 03:06:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 287. [2023-04-03 03:06:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 278 states have (on average 1.2374100719424461) internal successors, (344), 283 states have internal predecessors, (344), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 347 transitions. [2023-04-03 03:06:24,800 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 347 transitions. Word has length 87 [2023-04-03 03:06:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:24,800 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 347 transitions. [2023-04-03 03:06:24,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 347 transitions. [2023-04-03 03:06:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:06:24,800 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:24,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:06:24,801 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:24,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 919750254, now seen corresponding path program 1 times [2023-04-03 03:06:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959430415] [2023-04-03 03:06:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:25,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959430415] [2023-04-03 03:06:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959430415] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:25,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:25,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23571930] [2023-04-03 03:06:25,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:25,360 INFO L87 Difference]: Start difference. First operand 287 states and 347 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:26,618 INFO L93 Difference]: Finished difference Result 925 states and 1174 transitions. [2023-04-03 03:06:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 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 88 [2023-04-03 03:06:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:26,620 INFO L225 Difference]: With dead ends: 925 [2023-04-03 03:06:26,620 INFO L226 Difference]: Without dead ends: 816 [2023-04-03 03:06:26,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:26,621 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 983 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:26,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2368 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:26,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-04-03 03:06:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 264. [2023-04-03 03:06:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 257 states have (on average 1.2178988326848248) internal successors, (313), 260 states have internal predecessors, (313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 316 transitions. [2023-04-03 03:06:26,786 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 316 transitions. Word has length 88 [2023-04-03 03:06:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:26,787 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 316 transitions. [2023-04-03 03:06:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 316 transitions. [2023-04-03 03:06:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:06:26,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:26,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:06:26,787 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:26,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1233688562, now seen corresponding path program 1 times [2023-04-03 03:06:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036043226] [2023-04-03 03:06:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:27,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036043226] [2023-04-03 03:06:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036043226] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:27,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:27,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-03 03:06:27,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077353821] [2023-04-03 03:06:27,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:27,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-03 03:06:27,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-03 03:06:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-04-03 03:06:27,646 INFO L87 Difference]: Start difference. First operand 264 states and 316 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:29,206 INFO L93 Difference]: Finished difference Result 646 states and 786 transitions. [2023-04-03 03:06:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-03 03:06:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 1 states have call successors, (2), 1 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 88 [2023-04-03 03:06:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:29,208 INFO L225 Difference]: With dead ends: 646 [2023-04-03 03:06:29,208 INFO L226 Difference]: Without dead ends: 556 [2023-04-03 03:06:29,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-04-03 03:06:29,209 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1415 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:29,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1907 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:06:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-04-03 03:06:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 262. [2023-04-03 03:06:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 255 states have (on average 1.2117647058823529) internal successors, (309), 258 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 312 transitions. [2023-04-03 03:06:29,378 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 312 transitions. Word has length 88 [2023-04-03 03:06:29,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:29,378 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 312 transitions. [2023-04-03 03:06:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 312 transitions. [2023-04-03 03:06:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 03:06:29,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:29,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:06:29,379 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:29,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash 345228617, now seen corresponding path program 1 times [2023-04-03 03:06:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511338108] [2023-04-03 03:06:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:29,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511338108] [2023-04-03 03:06:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511338108] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175829852] [2023-04-03 03:06:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:29,951 INFO L87 Difference]: Start difference. First operand 262 states and 312 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:30,776 INFO L93 Difference]: Finished difference Result 469 states and 568 transitions. [2023-04-03 03:06:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:30,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (2), 1 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 89 [2023-04-03 03:06:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:30,782 INFO L225 Difference]: With dead ends: 469 [2023-04-03 03:06:30,782 INFO L226 Difference]: Without dead ends: 421 [2023-04-03 03:06:30,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:30,786 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 814 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:30,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1192 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-04-03 03:06:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 247. [2023-04-03 03:06:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.2033195020746887) internal successors, (290), 243 states have internal predecessors, (290), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 293 transitions. [2023-04-03 03:06:31,027 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 293 transitions. Word has length 89 [2023-04-03 03:06:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:31,027 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 293 transitions. [2023-04-03 03:06:31,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 293 transitions. [2023-04-03 03:06:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-03 03:06:31,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:31,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:31,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-03 03:06:31,028 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:31,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 148404526, now seen corresponding path program 1 times [2023-04-03 03:06:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821535351] [2023-04-03 03:06:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:31,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:31,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821535351] [2023-04-03 03:06:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821535351] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352935436] [2023-04-03 03:06:31,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:31,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:31,342 INFO L87 Difference]: Start difference. First operand 247 states and 293 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:32,094 INFO L93 Difference]: Finished difference Result 507 states and 623 transitions. [2023-04-03 03:06:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:06:32,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 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 90 [2023-04-03 03:06:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:32,096 INFO L225 Difference]: With dead ends: 507 [2023-04-03 03:06:32,096 INFO L226 Difference]: Without dead ends: 387 [2023-04-03 03:06:32,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:06:32,105 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 477 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:32,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 542 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-04-03 03:06:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 247. [2023-04-03 03:06:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.1950207468879668) internal successors, (288), 243 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 291 transitions. [2023-04-03 03:06:32,270 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 291 transitions. Word has length 90 [2023-04-03 03:06:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:32,271 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 291 transitions. [2023-04-03 03:06:32,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 291 transitions. [2023-04-03 03:06:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-03 03:06:32,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:32,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:32,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-03 03:06:32,272 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:32,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1585232178, now seen corresponding path program 1 times [2023-04-03 03:06:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328948051] [2023-04-03 03:06:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:32,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328948051] [2023-04-03 03:06:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328948051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:06:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063768598] [2023-04-03 03:06:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:06:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:06:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:06:32,499 INFO L87 Difference]: Start difference. First operand 247 states and 291 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:33,109 INFO L93 Difference]: Finished difference Result 397 states and 474 transitions. [2023-04-03 03:06:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:06:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 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 90 [2023-04-03 03:06:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:33,111 INFO L225 Difference]: With dead ends: 397 [2023-04-03 03:06:33,111 INFO L226 Difference]: Without dead ends: 389 [2023-04-03 03:06:33,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:06:33,112 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 577 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:33,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 644 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-04-03 03:06:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 247. [2023-04-03 03:06:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.1908713692946058) internal successors, (287), 243 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 290 transitions. [2023-04-03 03:06:33,281 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 290 transitions. Word has length 90 [2023-04-03 03:06:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:33,281 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 290 transitions. [2023-04-03 03:06:33,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:33,281 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 290 transitions. [2023-04-03 03:06:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 03:06:33,282 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:33,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-03 03:06:33,282 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:33,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash -511478861, now seen corresponding path program 1 times [2023-04-03 03:06:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221378889] [2023-04-03 03:06:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:33,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221378889] [2023-04-03 03:06:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221378889] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:33,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:33,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637246779] [2023-04-03 03:06:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:33,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:33,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:33,814 INFO L87 Difference]: Start difference. First operand 247 states and 290 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:34,903 INFO L93 Difference]: Finished difference Result 583 states and 716 transitions. [2023-04-03 03:06:34,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:34,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (2), 1 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 92 [2023-04-03 03:06:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:34,905 INFO L225 Difference]: With dead ends: 583 [2023-04-03 03:06:34,905 INFO L226 Difference]: Without dead ends: 577 [2023-04-03 03:06:34,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:34,906 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 915 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:34,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1733 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-04-03 03:06:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 241. [2023-04-03 03:06:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.1864406779661016) internal successors, (280), 237 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 283 transitions. [2023-04-03 03:06:35,091 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 283 transitions. Word has length 92 [2023-04-03 03:06:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:35,092 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 283 transitions. [2023-04-03 03:06:35,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 283 transitions. [2023-04-03 03:06:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 03:06:35,092 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:35,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-03 03:06:35,092 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:35,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1480514803, now seen corresponding path program 1 times [2023-04-03 03:06:35,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:35,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281611637] [2023-04-03 03:06:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:35,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:36,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281611637] [2023-04-03 03:06:36,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281611637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:36,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-04-03 03:06:36,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350631558] [2023-04-03 03:06:36,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-03 03:06:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-03 03:06:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2023-04-03 03:06:36,272 INFO L87 Difference]: Start difference. First operand 241 states and 283 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:38,266 INFO L93 Difference]: Finished difference Result 289 states and 333 transitions. [2023-04-03 03:06:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-03 03:06:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (2), 1 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 92 [2023-04-03 03:06:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:38,267 INFO L225 Difference]: With dead ends: 289 [2023-04-03 03:06:38,267 INFO L226 Difference]: Without dead ends: 280 [2023-04-03 03:06:38,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=352, Invalid=2000, Unknown=0, NotChecked=0, Total=2352 [2023-04-03 03:06:38,268 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 479 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:38,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 2314 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:06:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-04-03 03:06:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 257. [2023-04-03 03:06:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.1865079365079365) internal successors, (299), 253 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2023-04-03 03:06:38,454 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 92 [2023-04-03 03:06:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:38,454 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2023-04-03 03:06:38,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2023-04-03 03:06:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-03 03:06:38,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:38,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-04-03 03:06:38,455 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:38,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash -952496906, now seen corresponding path program 1 times [2023-04-03 03:06:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223365422] [2023-04-03 03:06:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:38,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223365422] [2023-04-03 03:06:38,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223365422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:38,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:38,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:06:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022128648] [2023-04-03 03:06:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:06:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:06:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:06:38,924 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:40,091 INFO L93 Difference]: Finished difference Result 654 states and 803 transitions. [2023-04-03 03:06:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:06:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (2), 1 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 93 [2023-04-03 03:06:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:40,093 INFO L225 Difference]: With dead ends: 654 [2023-04-03 03:06:40,093 INFO L226 Difference]: Without dead ends: 625 [2023-04-03 03:06:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:06:40,093 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 687 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:40,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2062 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:06:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-04-03 03:06:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 221. [2023-04-03 03:06:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.1843317972350231) internal successors, (257), 217 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 260 transitions. [2023-04-03 03:06:40,268 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 260 transitions. Word has length 93 [2023-04-03 03:06:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:40,269 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 260 transitions. [2023-04-03 03:06:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 260 transitions. [2023-04-03 03:06:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 03:06:40,269 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:40,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-04-03 03:06:40,270 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:40,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 116757568, now seen corresponding path program 1 times [2023-04-03 03:06:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454144480] [2023-04-03 03:06:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:40,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:40,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454144480] [2023-04-03 03:06:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454144480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:40,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:06:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437479882] [2023-04-03 03:06:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:40,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:06:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:06:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:40,429 INFO L87 Difference]: Start difference. First operand 221 states and 260 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:40,768 INFO L93 Difference]: Finished difference Result 316 states and 385 transitions. [2023-04-03 03:06:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:06:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2023-04-03 03:06:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:40,770 INFO L225 Difference]: With dead ends: 316 [2023-04-03 03:06:40,770 INFO L226 Difference]: Without dead ends: 272 [2023-04-03 03:06:40,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:40,771 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:40,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 304 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:06:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-04-03 03:06:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2023-04-03 03:06:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 258 states have (on average 1.2015503875968991) internal successors, (310), 258 states have internal predecessors, (310), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 313 transitions. [2023-04-03 03:06:41,059 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 313 transitions. Word has length 111 [2023-04-03 03:06:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:41,059 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 313 transitions. [2023-04-03 03:06:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 313 transitions. [2023-04-03 03:06:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:06:41,060 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:41,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-04-03 03:06:41,061 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:41,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1187083547, now seen corresponding path program 1 times [2023-04-03 03:06:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:41,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850047430] [2023-04-03 03:06:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:41,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850047430] [2023-04-03 03:06:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850047430] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:41,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:41,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:06:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567152627] [2023-04-03 03:06:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:06:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:06:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:41,233 INFO L87 Difference]: Start difference. First operand 262 states and 313 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:41,695 INFO L93 Difference]: Finished difference Result 510 states and 641 transitions. [2023-04-03 03:06:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:06:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-03 03:06:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:41,696 INFO L225 Difference]: With dead ends: 510 [2023-04-03 03:06:41,696 INFO L226 Difference]: Without dead ends: 386 [2023-04-03 03:06:41,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:41,696 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 60 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:41,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 305 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:06:41,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-04-03 03:06:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 372. [2023-04-03 03:06:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 368 states have (on average 1.236413043478261) internal successors, (455), 368 states have internal predecessors, (455), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 458 transitions. [2023-04-03 03:06:42,107 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 458 transitions. Word has length 114 [2023-04-03 03:06:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:42,108 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 458 transitions. [2023-04-03 03:06:42,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 458 transitions. [2023-04-03 03:06:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-03 03:06:42,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:42,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-04-03 03:06:42,108 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:42,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2134509031, now seen corresponding path program 1 times [2023-04-03 03:06:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:42,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541131963] [2023-04-03 03:06:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:42,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:42,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:42,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541131963] [2023-04-03 03:06:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541131963] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:42,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:06:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555929601] [2023-04-03 03:06:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:06:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:06:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:42,229 INFO L87 Difference]: Start difference. First operand 372 states and 458 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:43,034 INFO L93 Difference]: Finished difference Result 840 states and 1076 transitions. [2023-04-03 03:06:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:06:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (2), 1 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 117 [2023-04-03 03:06:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:43,035 INFO L225 Difference]: With dead ends: 840 [2023-04-03 03:06:43,035 INFO L226 Difference]: Without dead ends: 606 [2023-04-03 03:06:43,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:43,036 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 53 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 306 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:06:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-04-03 03:06:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 580. [2023-04-03 03:06:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 576 states have (on average 1.2621527777777777) internal successors, (727), 576 states have internal predecessors, (727), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 730 transitions. [2023-04-03 03:06:43,780 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 730 transitions. Word has length 117 [2023-04-03 03:06:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:43,780 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 730 transitions. [2023-04-03 03:06:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 730 transitions. [2023-04-03 03:06:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-03 03:06:43,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:43,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:43,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-04-03 03:06:43,781 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:43,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash 897439785, now seen corresponding path program 1 times [2023-04-03 03:06:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464006966] [2023-04-03 03:06:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:43,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:43,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464006966] [2023-04-03 03:06:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464006966] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:43,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:43,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:06:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438501506] [2023-04-03 03:06:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:43,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:06:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:06:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:43,912 INFO L87 Difference]: Start difference. First operand 580 states and 730 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:45,376 INFO L93 Difference]: Finished difference Result 1464 states and 1892 transitions. [2023-04-03 03:06:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:06:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 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 120 [2023-04-03 03:06:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:45,378 INFO L225 Difference]: With dead ends: 1464 [2023-04-03 03:06:45,378 INFO L226 Difference]: Without dead ends: 1022 [2023-04-03 03:06:45,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:45,379 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 46 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:45,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 307 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:06:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-04-03 03:06:46,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 972. [2023-04-03 03:06:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 968 states have (on average 1.2758264462809918) internal successors, (1235), 968 states have internal predecessors, (1235), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1238 transitions. [2023-04-03 03:06:46,763 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1238 transitions. Word has length 120 [2023-04-03 03:06:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:46,763 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1238 transitions. [2023-04-03 03:06:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1238 transitions. [2023-04-03 03:06:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-03 03:06:46,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:46,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-04-03 03:06:46,764 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:46,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash -283570672, now seen corresponding path program 1 times [2023-04-03 03:06:46,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108297251] [2023-04-03 03:06:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:46,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:46,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108297251] [2023-04-03 03:06:46,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108297251] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:46,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:46,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:06:46,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447853055] [2023-04-03 03:06:46,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:06:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:06:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:46,898 INFO L87 Difference]: Start difference. First operand 972 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:06:49,649 INFO L93 Difference]: Finished difference Result 2640 states and 3416 transitions. [2023-04-03 03:06:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:06:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 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 123 [2023-04-03 03:06:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:06:49,652 INFO L225 Difference]: With dead ends: 2640 [2023-04-03 03:06:49,652 INFO L226 Difference]: Without dead ends: 1806 [2023-04-03 03:06:49,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:06:49,654 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:06:49,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 308 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:06:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2023-04-03 03:06:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1708. [2023-04-03 03:06:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1704 states have (on average 1.278755868544601) internal successors, (2179), 1704 states have internal predecessors, (2179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2182 transitions. [2023-04-03 03:06:52,418 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2182 transitions. Word has length 123 [2023-04-03 03:06:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:06:52,418 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2182 transitions. [2023-04-03 03:06:52,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:06:52,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2182 transitions. [2023-04-03 03:06:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-03 03:06:52,419 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:06:52,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:06:52,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-04-03 03:06:52,419 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:06:52,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:06:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1471567676, now seen corresponding path program 1 times [2023-04-03 03:06:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:06:52,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491910433] [2023-04-03 03:06:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:06:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:06:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:06:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:06:52,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:06:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491910433] [2023-04-03 03:06:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491910433] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:06:52,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:06:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:06:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501371750] [2023-04-03 03:06:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:06:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:06:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:06:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:06:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:06:52,574 INFO L87 Difference]: Start difference. First operand 1708 states and 2182 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:07:01,195 INFO L93 Difference]: Finished difference Result 6813 states and 8801 transitions. [2023-04-03 03:07:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 03:07:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 1 states have call successors, (2), 1 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 126 [2023-04-03 03:07:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:07:01,206 INFO L225 Difference]: With dead ends: 6813 [2023-04-03 03:07:01,206 INFO L226 Difference]: Without dead ends: 5243 [2023-04-03 03:07:01,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:07:01,210 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 847 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:07:01,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1394 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:07:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2023-04-03 03:07:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 2472. [2023-04-03 03:07:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2468 states have (on average 1.2702593192868719) internal successors, (3135), 2468 states have internal predecessors, (3135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3138 transitions. [2023-04-03 03:07:05,301 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3138 transitions. Word has length 126 [2023-04-03 03:07:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:07:05,301 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3138 transitions. [2023-04-03 03:07:05,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3138 transitions. [2023-04-03 03:07:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 03:07:05,302 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:07:05,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:07:05,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-04-03 03:07:05,302 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:07:05,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:07:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 732211876, now seen corresponding path program 1 times [2023-04-03 03:07:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:07:05,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357200923] [2023-04-03 03:07:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:05,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:07:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:07:05,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:07:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357200923] [2023-04-03 03:07:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357200923] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:07:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:07:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:07:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003764282] [2023-04-03 03:07:05,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:07:05,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:07:05,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:07:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:07:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:07:05,420 INFO L87 Difference]: Start difference. First operand 2472 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:07:10,726 INFO L93 Difference]: Finished difference Result 5416 states and 6912 transitions. [2023-04-03 03:07:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:07:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 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 128 [2023-04-03 03:07:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:07:10,732 INFO L225 Difference]: With dead ends: 5416 [2023-04-03 03:07:10,733 INFO L226 Difference]: Without dead ends: 3082 [2023-04-03 03:07:10,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:07:10,737 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 81 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:07:10,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 242 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:07:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2023-04-03 03:07:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3080. [2023-04-03 03:07:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3076 states have (on average 1.263003901170351) internal successors, (3885), 3076 states have internal predecessors, (3885), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 3888 transitions. [2023-04-03 03:07:15,816 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 3888 transitions. Word has length 128 [2023-04-03 03:07:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:07:15,816 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 3888 transitions. [2023-04-03 03:07:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 3888 transitions. [2023-04-03 03:07:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 03:07:15,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:07:15,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:07:15,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-04-03 03:07:15,818 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:07:15,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:07:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1173935468, now seen corresponding path program 1 times [2023-04-03 03:07:15,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:07:15,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102255757] [2023-04-03 03:07:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:15,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:07:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:07:16,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:07:16,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102255757] [2023-04-03 03:07:16,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102255757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:07:16,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:07:16,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:07:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569955661] [2023-04-03 03:07:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:07:16,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:07:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:07:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:07:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:07:16,120 INFO L87 Difference]: Start difference. First operand 3080 states and 3888 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:07:21,334 INFO L93 Difference]: Finished difference Result 6024 states and 7628 transitions. [2023-04-03 03:07:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 03:07:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 1 states have call successors, (2), 1 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 128 [2023-04-03 03:07:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:07:21,340 INFO L225 Difference]: With dead ends: 6024 [2023-04-03 03:07:21,340 INFO L226 Difference]: Without dead ends: 3082 [2023-04-03 03:07:21,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:07:21,345 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 186 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:07:21,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 371 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:07:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2023-04-03 03:07:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3080. [2023-04-03 03:07:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3076 states have (on average 1.2623537061118335) internal successors, (3883), 3076 states have internal predecessors, (3883), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 3886 transitions. [2023-04-03 03:07:26,483 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 3886 transitions. Word has length 128 [2023-04-03 03:07:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:07:26,483 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 3886 transitions. [2023-04-03 03:07:26,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 3886 transitions. [2023-04-03 03:07:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-03 03:07:26,484 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:07:26,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:07:26,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-04-03 03:07:26,484 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:07:26,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:07:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -504250502, now seen corresponding path program 1 times [2023-04-03 03:07:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:07:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794602870] [2023-04-03 03:07:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:07:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:07:26,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:07:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794602870] [2023-04-03 03:07:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794602870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:07:26,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:07:26,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:07:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524149739] [2023-04-03 03:07:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:07:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:07:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:07:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:07:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:07:26,794 INFO L87 Difference]: Start difference. First operand 3080 states and 3886 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:07:34,229 INFO L93 Difference]: Finished difference Result 4247 states and 5302 transitions. [2023-04-03 03:07:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:07:34,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 1 states have call successors, (2), 1 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 129 [2023-04-03 03:07:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:07:34,234 INFO L225 Difference]: With dead ends: 4247 [2023-04-03 03:07:34,234 INFO L226 Difference]: Without dead ends: 4245 [2023-04-03 03:07:34,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-03 03:07:34,235 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 343 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:07:34,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 991 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:07:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2023-04-03 03:07:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 3080. [2023-04-03 03:07:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3076 states have (on average 1.2467490247074122) internal successors, (3835), 3076 states have internal predecessors, (3835), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 3838 transitions. [2023-04-03 03:07:39,438 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 3838 transitions. Word has length 129 [2023-04-03 03:07:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:07:39,439 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 3838 transitions. [2023-04-03 03:07:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 3838 transitions. [2023-04-03 03:07:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-03 03:07:39,440 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:07:39,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:07:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-04-03 03:07:39,440 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:07:39,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:07:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash -936692365, now seen corresponding path program 1 times [2023-04-03 03:07:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:07:39,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191782249] [2023-04-03 03:07:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:07:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-03 03:07:39,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:07:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191782249] [2023-04-03 03:07:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191782249] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:07:39,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:07:39,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:07:39,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497236616] [2023-04-03 03:07:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:07:39,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:07:39,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:07:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:07:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:07:39,740 INFO L87 Difference]: Start difference. First operand 3080 states and 3838 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:07:47,992 INFO L93 Difference]: Finished difference Result 7741 states and 9668 transitions. [2023-04-03 03:07:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:07:47,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (2), 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 148 [2023-04-03 03:07:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:07:47,997 INFO L225 Difference]: With dead ends: 7741 [2023-04-03 03:07:47,998 INFO L226 Difference]: Without dead ends: 4782 [2023-04-03 03:07:48,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:07:48,001 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 396 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:07:48,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 436 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:07:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2023-04-03 03:07:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 3080. [2023-04-03 03:07:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3076 states have (on average 1.2460988296488946) internal successors, (3833), 3076 states have internal predecessors, (3833), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 3836 transitions. [2023-04-03 03:07:53,230 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 3836 transitions. Word has length 148 [2023-04-03 03:07:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:07:53,230 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 3836 transitions. [2023-04-03 03:07:53,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:07:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 3836 transitions. [2023-04-03 03:07:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-03 03:07:53,231 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:07:53,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:07:53,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-04-03 03:07:53,231 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:07:53,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:07:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -964318760, now seen corresponding path program 1 times [2023-04-03 03:07:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:07:53,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536752095] [2023-04-03 03:07:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:53,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:07:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:07:59,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:07:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536752095] [2023-04-03 03:07:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536752095] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:07:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689103667] [2023-04-03 03:07:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:07:59,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:07:59,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:07:59,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 03:07:59,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 03:07:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:07:59,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 2443 conjuncts, 47 conjunts are in the unsatisfiable core [2023-04-03 03:07:59,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:08:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-03 03:08:04,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 03:08:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689103667] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:08:04,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 03:08:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [43] total 69 [2023-04-03 03:08:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426312966] [2023-04-03 03:08:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:08:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-03 03:08:04,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:08:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-03 03:08:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=4421, Unknown=0, NotChecked=0, Total=4692 [2023-04-03 03:08:04,962 INFO L87 Difference]: Start difference. First operand 3080 states and 3836 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:08:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:08:22,863 INFO L93 Difference]: Finished difference Result 12221 states and 15308 transitions. [2023-04-03 03:08:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-03 03:08:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 1 states have call successors, (2), 1 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 150 [2023-04-03 03:08:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:08:22,875 INFO L225 Difference]: With dead ends: 12221 [2023-04-03 03:08:22,875 INFO L226 Difference]: Without dead ends: 9268 [2023-04-03 03:08:22,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=427, Invalid=6545, Unknown=0, NotChecked=0, Total=6972 [2023-04-03 03:08:22,880 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 467 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:08:22,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1939 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:08:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2023-04-03 03:08:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 3098. [2023-04-03 03:08:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3094 states have (on average 1.2453135100193924) internal successors, (3853), 3094 states have internal predecessors, (3853), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:08:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 3856 transitions. [2023-04-03 03:08:28,257 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 3856 transitions. Word has length 150 [2023-04-03 03:08:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:08:28,257 INFO L495 AbstractCegarLoop]: Abstraction has 3098 states and 3856 transitions. [2023-04-03 03:08:28,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:08:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 3856 transitions. [2023-04-03 03:08:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-03 03:08:28,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:08:28,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:08:28,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 03:08:28,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-04-03 03:08:28,459 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-03 03:08:28,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:08:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1409015532, now seen corresponding path program 1 times [2023-04-03 03:08:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:08:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802304377] [2023-04-03 03:08:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:08:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:08:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:08:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:08:33,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:08:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802304377] [2023-04-03 03:08:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802304377] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:08:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843928569] [2023-04-03 03:08:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:08:33,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:08:33,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:08:33,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 03:08:33,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 03:08:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:08:34,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 108 conjunts are in the unsatisfiable core [2023-04-03 03:08:34,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:08:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:08:54,051 INFO L327 TraceCheckSpWp]: Computing backward predicates...