/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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:01:29,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:01:29,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:01:29,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:01:29,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:01:29,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:01:29,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:01:29,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:01:29,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:01:29,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:01:29,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:01:29,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:01:29,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:01:29,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:01:29,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:01:29,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:01:29,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:01:29,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:01:29,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:01:29,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:01:29,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:01:29,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:01:29,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:01:29,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:01:29,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:01:29,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:01:29,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:01:29,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:01:29,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:01:29,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:01:29,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:01:29,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:01:29,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:01:29,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:01:29,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:01:29,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:01:29,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:01:29,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:01:29,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:01:29,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:01:29,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:01:29,790 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 03:01:29,817 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:01:29,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:01:29,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:01:29,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:01:29,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:01:29,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:01:29,819 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:01:29,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:01:29,819 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:01:29,819 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:01:29,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:01:29,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:01:29,821 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:01:29,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:01:29,821 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:01:29,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:01:29,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:01:29,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:01:29,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:01:29,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:01:29,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:01:29,823 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:01:29,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:01:29,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:01:29,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:01:29,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:01:30,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:01:30,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:01:30,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:01:30,076 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:01:30,077 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:01:30,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:01:31,236 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:01:31,558 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:01:31,558 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:01:31,570 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666cac83b/6d5b0da40a4747d7b71a1629404fef74/FLAG22729fdd4 [2023-04-03 03:01:31,582 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666cac83b/6d5b0da40a4747d7b71a1629404fef74 [2023-04-03 03:01:31,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:01:31,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:01:31,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:01:31,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:01:31,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:01:31,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:01:31" (1/1) ... [2023-04-03 03:01:31,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68005b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:31, skipping insertion in model container [2023-04-03 03:01:31,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:01:31" (1/1) ... [2023-04-03 03:01:31,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:01:31,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:01:31,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2023-04-03 03:01:32,030 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2023-04-03 03:01:32,042 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2023-04-03 03:01:32,051 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2023-04-03 03:01:32,063 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2023-04-03 03:01:32,073 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2023-04-03 03:01:32,081 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2023-04-03 03:01:32,089 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2023-04-03 03:01:32,098 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2023-04-03 03:01:32,109 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2023-04-03 03:01:32,116 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2023-04-03 03:01:32,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:01:32,160 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:01:32,268 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2023-04-03 03:01:32,296 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2023-04-03 03:01:32,311 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2023-04-03 03:01:32,318 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2023-04-03 03:01:32,326 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2023-04-03 03:01:32,332 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2023-04-03 03:01:32,338 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2023-04-03 03:01:32,344 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2023-04-03 03:01:32,380 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2023-04-03 03:01:32,385 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2023-04-03 03:01:32,394 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.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2023-04-03 03:01:32,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:01:32,436 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:01:32,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32 WrapperNode [2023-04-03 03:01:32,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:01:32,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:01:32,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:01:32,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:01:32,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:01:32,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:01:32,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:01:32,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:01:32,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (1/1) ... [2023-04-03 03:01:32,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:01:32,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:01:32,611 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 03:01:32,632 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 03:01:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:01:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:01:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:01:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:01:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:01:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:01:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:01:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:01:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:01:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:01:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:01:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:01:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:01:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:01:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:01:32,819 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:01:32,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:01:34,161 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:01:34,255 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:01:34,255 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:01:34,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:01:34 BoogieIcfgContainer [2023-04-03 03:01:34,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:01:34,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:01:34,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:01:34,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:01:34,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:01:31" (1/3) ... [2023-04-03 03:01:34,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3474f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:01:34, skipping insertion in model container [2023-04-03 03:01:34,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:01:32" (2/3) ... [2023-04-03 03:01:34,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3474f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:01:34, skipping insertion in model container [2023-04-03 03:01:34,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:01:34" (3/3) ... [2023-04-03 03:01:34,273 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 03:01:34,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:01:34,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-03 03:01:34,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:01:34,365 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;@49cb9ae4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:01:34,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-03 03:01:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 522 states, 506 states have (on average 1.83201581027668) internal successors, (927), 517 states have internal predecessors, (927), 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 03:01:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 03:01:34,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:34,402 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] [2023-04-03 03:01:34,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:34,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 998878851, now seen corresponding path program 1 times [2023-04-03 03:01:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:34,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372096082] [2023-04-03 03:01:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:35,031 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 03:01:35,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:35,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372096082] [2023-04-03 03:01:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372096082] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:35,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:35,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:01:35,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030698302] [2023-04-03 03:01:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:35,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:01:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:01:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:01:35,087 INFO L87 Difference]: Start difference. First operand has 522 states, 506 states have (on average 1.83201581027668) internal successors, (927), 517 states have internal predecessors, (927), 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 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:35,543 INFO L93 Difference]: Finished difference Result 645 states and 1115 transitions. [2023-04-03 03:01:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:01:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 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 62 [2023-04-03 03:01:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:35,560 INFO L225 Difference]: With dead ends: 645 [2023-04-03 03:01:35,561 INFO L226 Difference]: Without dead ends: 372 [2023-04-03 03:01:35,565 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 03:01:35,567 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1848 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:35,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 421 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-04-03 03:01:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-04-03 03:01:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 358 states have (on average 1.270949720670391) 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 03:01:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 458 transitions. [2023-04-03 03:01:35,655 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 458 transitions. Word has length 62 [2023-04-03 03:01:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:35,655 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 458 transitions. [2023-04-03 03:01:35,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,656 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 458 transitions. [2023-04-03 03:01:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 03:01:35,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:35,659 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] [2023-04-03 03:01:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:01:35,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:35,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1099414950, now seen corresponding path program 1 times [2023-04-03 03:01:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031045631] [2023-04-03 03:01:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:35,869 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 03:01:35,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031045631] [2023-04-03 03:01:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031045631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:35,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:01:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448124549] [2023-04-03 03:01:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:01:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:01:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:01:35,874 INFO L87 Difference]: Start difference. First operand 372 states and 458 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:36,170 INFO L93 Difference]: Finished difference Result 519 states and 644 transitions. [2023-04-03 03:01:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:01:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 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 62 [2023-04-03 03:01:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:36,173 INFO L225 Difference]: With dead ends: 519 [2023-04-03 03:01:36,173 INFO L226 Difference]: Without dead ends: 340 [2023-04-03 03:01:36,177 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 03:01:36,178 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1178 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 229 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-04-03 03:01:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-04-03 03:01:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.2822085889570551) internal successors, (418), 336 states have internal predecessors, (418), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 421 transitions. [2023-04-03 03:01:36,209 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 421 transitions. Word has length 62 [2023-04-03 03:01:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:36,209 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 421 transitions. [2023-04-03 03:01:36,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 421 transitions. [2023-04-03 03:01:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 03:01:36,211 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:36,211 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] [2023-04-03 03:01:36,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:01:36,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:36,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1561289160, now seen corresponding path program 1 times [2023-04-03 03:01:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:36,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168570874] [2023-04-03 03:01:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:36,406 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 03:01:36,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:36,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168570874] [2023-04-03 03:01:36,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168570874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:36,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:36,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:01:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235778078] [2023-04-03 03:01:36,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:36,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:01:36,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:01:36,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:01:36,410 INFO L87 Difference]: Start difference. First operand 340 states and 421 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:36,614 INFO L93 Difference]: Finished difference Result 419 states and 508 transitions. [2023-04-03 03:01:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:01:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 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 62 [2023-04-03 03:01:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:36,616 INFO L225 Difference]: With dead ends: 419 [2023-04-03 03:01:36,617 INFO L226 Difference]: Without dead ends: 254 [2023-04-03 03:01:36,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:01:36,618 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 854 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:36,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 189 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-04-03 03:01:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-04-03 03:01:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 240 states have (on average 1.2708333333333333) internal successors, (305), 250 states have internal predecessors, (305), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2023-04-03 03:01:36,634 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 62 [2023-04-03 03:01:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:36,635 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2023-04-03 03:01:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2023-04-03 03:01:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 03:01:36,636 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:36,636 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] [2023-04-03 03:01:36,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:01:36,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:36,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:36,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257792, now seen corresponding path program 1 times [2023-04-03 03:01:36,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:36,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164121652] [2023-04-03 03:01:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:36,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:36,777 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 03:01:36,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164121652] [2023-04-03 03:01:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164121652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:36,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:36,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:01:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384053535] [2023-04-03 03:01:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:36,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:01:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:36,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:01:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:01:36,780 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:37,016 INFO L93 Difference]: Finished difference Result 478 states and 587 transitions. [2023-04-03 03:01:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:01:37,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 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 63 [2023-04-03 03:01:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:37,019 INFO L225 Difference]: With dead ends: 478 [2023-04-03 03:01:37,019 INFO L226 Difference]: Without dead ends: 344 [2023-04-03 03:01:37,020 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 03:01:37,020 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1023 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:37,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 263 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-04-03 03:01:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 302. [2023-04-03 03:01:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3194444444444444) internal successors, (380), 298 states have internal predecessors, (380), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 383 transitions. [2023-04-03 03:01:37,053 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 383 transitions. Word has length 63 [2023-04-03 03:01:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:37,053 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 383 transitions. [2023-04-03 03:01:37,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 383 transitions. [2023-04-03 03:01:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 03:01:37,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:37,057 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] [2023-04-03 03:01:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:01:37,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:37,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1291253249, now seen corresponding path program 1 times [2023-04-03 03:01:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:37,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687122898] [2023-04-03 03:01:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:37,496 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 03:01:37,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687122898] [2023-04-03 03:01:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687122898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147286219] [2023-04-03 03:01:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:37,499 INFO L87 Difference]: Start difference. First operand 302 states and 383 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:38,175 INFO L93 Difference]: Finished difference Result 695 states and 899 transitions. [2023-04-03 03:01:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:38,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 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 64 [2023-04-03 03:01:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:38,178 INFO L225 Difference]: With dead ends: 695 [2023-04-03 03:01:38,178 INFO L226 Difference]: Without dead ends: 615 [2023-04-03 03:01:38,179 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 03:01:38,179 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1608 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:38,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 763 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-04-03 03:01:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 302. [2023-04-03 03:01:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3159722222222223) internal successors, (379), 298 states have internal predecessors, (379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 382 transitions. [2023-04-03 03:01:38,212 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 382 transitions. Word has length 64 [2023-04-03 03:01:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 382 transitions. [2023-04-03 03:01:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 382 transitions. [2023-04-03 03:01:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 03:01:38,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:38,217 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] [2023-04-03 03:01:38,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:01:38,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:38,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash 910605516, now seen corresponding path program 1 times [2023-04-03 03:01:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:38,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641799456] [2023-04-03 03:01:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:38,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:38,568 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 03:01:38,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:38,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641799456] [2023-04-03 03:01:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641799456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:38,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499338594] [2023-04-03 03:01:38,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:38,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:38,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:38,570 INFO L87 Difference]: Start difference. First operand 302 states and 382 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:39,235 INFO L93 Difference]: Finished difference Result 595 states and 757 transitions. [2023-04-03 03:01:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:39,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 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 64 [2023-04-03 03:01:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:39,238 INFO L225 Difference]: With dead ends: 595 [2023-04-03 03:01:39,238 INFO L226 Difference]: Without dead ends: 493 [2023-04-03 03:01:39,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:39,240 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1407 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:39,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 976 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-04-03 03:01:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 302. [2023-04-03 03:01:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3125) internal successors, (378), 298 states have internal predecessors, (378), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 381 transitions. [2023-04-03 03:01:39,278 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 381 transitions. Word has length 64 [2023-04-03 03:01:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:39,279 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 381 transitions. [2023-04-03 03:01:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 381 transitions. [2023-04-03 03:01:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 03:01:39,279 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:39,280 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] [2023-04-03 03:01:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:01:39,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:39,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -684209455, now seen corresponding path program 1 times [2023-04-03 03:01:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:39,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752102713] [2023-04-03 03:01:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:39,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:39,544 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 03:01:39,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752102713] [2023-04-03 03:01:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752102713] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:39,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:01:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155086673] [2023-04-03 03:01:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:01:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:01:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:01:39,547 INFO L87 Difference]: Start difference. First operand 302 states and 381 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:39,881 INFO L93 Difference]: Finished difference Result 576 states and 714 transitions. [2023-04-03 03:01:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:01:39,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (2), 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 64 [2023-04-03 03:01:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:39,883 INFO L225 Difference]: With dead ends: 576 [2023-04-03 03:01:39,883 INFO L226 Difference]: Without dead ends: 429 [2023-04-03 03:01:39,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:01:39,884 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 905 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:39,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 389 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-04-03 03:01:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 302. [2023-04-03 03:01:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3090277777777777) internal successors, (377), 298 states have internal predecessors, (377), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 380 transitions. [2023-04-03 03:01:39,924 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 380 transitions. Word has length 64 [2023-04-03 03:01:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:39,924 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 380 transitions. [2023-04-03 03:01:39,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 380 transitions. [2023-04-03 03:01:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:39,925 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:39,925 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] [2023-04-03 03:01:39,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:01:39,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:39,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1728889974, now seen corresponding path program 1 times [2023-04-03 03:01:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930856810] [2023-04-03 03:01:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:40,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930856810] [2023-04-03 03:01:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930856810] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933894921] [2023-04-03 03:01:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:40,203 INFO L87 Difference]: Start difference. First operand 302 states and 380 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:40,876 INFO L93 Difference]: Finished difference Result 632 states and 808 transitions. [2023-04-03 03:01:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:40,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:40,879 INFO L225 Difference]: With dead ends: 632 [2023-04-03 03:01:40,879 INFO L226 Difference]: Without dead ends: 615 [2023-04-03 03:01:40,880 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 03:01:40,881 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1440 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:40,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 912 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-04-03 03:01:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 302. [2023-04-03 03:01:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3020833333333333) internal successors, (375), 298 states have internal predecessors, (375), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 378 transitions. [2023-04-03 03:01:40,919 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 378 transitions. Word has length 66 [2023-04-03 03:01:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 378 transitions. [2023-04-03 03:01:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 378 transitions. [2023-04-03 03:01:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:40,925 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:40,925 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] [2023-04-03 03:01:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:01:40,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:40,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 741178206, now seen corresponding path program 1 times [2023-04-03 03:01:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681040690] [2023-04-03 03:01:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:41,222 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 03:01:41,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681040690] [2023-04-03 03:01:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681040690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:41,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105151585] [2023-04-03 03:01:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:41,225 INFO L87 Difference]: Start difference. First operand 302 states and 378 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:41,943 INFO L93 Difference]: Finished difference Result 600 states and 757 transitions. [2023-04-03 03:01:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:41,946 INFO L225 Difference]: With dead ends: 600 [2023-04-03 03:01:41,946 INFO L226 Difference]: Without dead ends: 595 [2023-04-03 03:01:41,947 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 03:01:41,949 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1436 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:41,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 856 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-04-03 03:01:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 302. [2023-04-03 03:01:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.2951388888888888) internal successors, (373), 298 states have internal predecessors, (373), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 376 transitions. [2023-04-03 03:01:41,997 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 376 transitions. Word has length 66 [2023-04-03 03:01:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:41,997 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 376 transitions. [2023-04-03 03:01:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 376 transitions. [2023-04-03 03:01:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:42,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:42,001 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] [2023-04-03 03:01:42,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:01:42,002 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:42,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 176353294, now seen corresponding path program 1 times [2023-04-03 03:01:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:42,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948811461] [2023-04-03 03:01:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:42,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:42,275 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 03:01:42,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948811461] [2023-04-03 03:01:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948811461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123872099] [2023-04-03 03:01:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:42,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:42,277 INFO L87 Difference]: Start difference. First operand 302 states and 376 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:42,797 INFO L93 Difference]: Finished difference Result 510 states and 648 transitions. [2023-04-03 03:01:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:42,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:42,799 INFO L225 Difference]: With dead ends: 510 [2023-04-03 03:01:42,799 INFO L226 Difference]: Without dead ends: 378 [2023-04-03 03:01:42,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:01:42,800 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 937 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:42,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 735 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-04-03 03:01:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 302. [2023-04-03 03:01:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.2881944444444444) internal successors, (371), 298 states have internal predecessors, (371), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 374 transitions. [2023-04-03 03:01:42,846 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 374 transitions. Word has length 66 [2023-04-03 03:01:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:42,846 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 374 transitions. [2023-04-03 03:01:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 374 transitions. [2023-04-03 03:01:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:42,847 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:42,848 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] [2023-04-03 03:01:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:01:42,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:42,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash 623390897, now seen corresponding path program 1 times [2023-04-03 03:01:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:42,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008316970] [2023-04-03 03:01:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:42,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:43,143 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 03:01:43,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008316970] [2023-04-03 03:01:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008316970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268461942] [2023-04-03 03:01:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:43,145 INFO L87 Difference]: Start difference. First operand 302 states and 374 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:43,827 INFO L93 Difference]: Finished difference Result 668 states and 846 transitions. [2023-04-03 03:01:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:43,830 INFO L225 Difference]: With dead ends: 668 [2023-04-03 03:01:43,830 INFO L226 Difference]: Without dead ends: 595 [2023-04-03 03:01:43,831 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 03:01:43,831 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1427 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:43,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 855 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-04-03 03:01:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 302. [2023-04-03 03:01:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.2847222222222223) internal successors, (370), 298 states have internal predecessors, (370), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 373 transitions. [2023-04-03 03:01:43,879 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 373 transitions. Word has length 66 [2023-04-03 03:01:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:43,879 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 373 transitions. [2023-04-03 03:01:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 373 transitions. [2023-04-03 03:01:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:43,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:43,880 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] [2023-04-03 03:01:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:01:43,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:43,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash 224575817, now seen corresponding path program 1 times [2023-04-03 03:01:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493813290] [2023-04-03 03:01:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:44,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493813290] [2023-04-03 03:01:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493813290] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405649413] [2023-04-03 03:01:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:44,457 INFO L87 Difference]: Start difference. First operand 302 states and 373 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:46,133 INFO L93 Difference]: Finished difference Result 1024 states and 1321 transitions. [2023-04-03 03:01:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:01:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:46,145 INFO L225 Difference]: With dead ends: 1024 [2023-04-03 03:01:46,145 INFO L226 Difference]: Without dead ends: 939 [2023-04-03 03:01:46,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:01:46,147 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 2627 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:46,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2627 Valid, 1422 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:01:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-04-03 03:01:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 306. [2023-04-03 03:01:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 292 states have (on average 1.2808219178082192) internal successors, (374), 302 states have internal predecessors, (374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 377 transitions. [2023-04-03 03:01:46,210 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 377 transitions. Word has length 66 [2023-04-03 03:01:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:46,210 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 377 transitions. [2023-04-03 03:01:46,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 377 transitions. [2023-04-03 03:01:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:46,211 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:46,211 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] [2023-04-03 03:01:46,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:01:46,212 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:46,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1186726950, now seen corresponding path program 1 times [2023-04-03 03:01:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151017778] [2023-04-03 03:01:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:46,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:46,685 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 03:01:46,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151017778] [2023-04-03 03:01:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151017778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708942987] [2023-04-03 03:01:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:46,687 INFO L87 Difference]: Start difference. First operand 306 states and 377 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:48,174 INFO L93 Difference]: Finished difference Result 959 states and 1233 transitions. [2023-04-03 03:01:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:01:48,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:48,178 INFO L225 Difference]: With dead ends: 959 [2023-04-03 03:01:48,178 INFO L226 Difference]: Without dead ends: 954 [2023-04-03 03:01:48,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:01:48,180 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2576 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:48,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 1105 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:01:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-04-03 03:01:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 310. [2023-04-03 03:01:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 296 states have (on average 1.277027027027027) internal successors, (378), 306 states have internal predecessors, (378), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 381 transitions. [2023-04-03 03:01:48,251 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 381 transitions. Word has length 66 [2023-04-03 03:01:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:48,251 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 381 transitions. [2023-04-03 03:01:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 381 transitions. [2023-04-03 03:01:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-03 03:01:48,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:48,252 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] [2023-04-03 03:01:48,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:01:48,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:48,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash 542846083, now seen corresponding path program 1 times [2023-04-03 03:01:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923787832] [2023-04-03 03:01:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:48,491 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 03:01:48,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923787832] [2023-04-03 03:01:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923787832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428751136] [2023-04-03 03:01:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:48,493 INFO L87 Difference]: Start difference. First operand 310 states and 381 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:49,225 INFO L93 Difference]: Finished difference Result 669 states and 845 transitions. [2023-04-03 03:01:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 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 66 [2023-04-03 03:01:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:49,228 INFO L225 Difference]: With dead ends: 669 [2023-04-03 03:01:49,229 INFO L226 Difference]: Without dead ends: 599 [2023-04-03 03:01:49,229 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 03:01:49,230 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1226 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:49,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 805 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-04-03 03:01:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 310. [2023-04-03 03:01:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 296 states have (on average 1.2736486486486487) internal successors, (377), 306 states have internal predecessors, (377), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 380 transitions. [2023-04-03 03:01:49,342 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 380 transitions. Word has length 66 [2023-04-03 03:01:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 380 transitions. [2023-04-03 03:01:49,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 380 transitions. [2023-04-03 03:01:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:01:49,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:49,344 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] [2023-04-03 03:01:49,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:01:49,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:49,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 918992976, now seen corresponding path program 1 times [2023-04-03 03:01:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:49,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381354621] [2023-04-03 03:01:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:49,611 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 03:01:49,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381354621] [2023-04-03 03:01:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381354621] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693669858] [2023-04-03 03:01:49,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:49,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:49,613 INFO L87 Difference]: Start difference. First operand 310 states and 380 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:50,387 INFO L93 Difference]: Finished difference Result 704 states and 895 transitions. [2023-04-03 03:01:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 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 67 [2023-04-03 03:01:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:50,390 INFO L225 Difference]: With dead ends: 704 [2023-04-03 03:01:50,390 INFO L226 Difference]: Without dead ends: 619 [2023-04-03 03:01:50,392 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 03:01:50,392 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 656 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:50,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1042 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-04-03 03:01:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 306. [2023-04-03 03:01:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 292 states have (on average 1.273972602739726) internal successors, (372), 302 states have internal predecessors, (372), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2023-04-03 03:01:50,475 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 67 [2023-04-03 03:01:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:50,475 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2023-04-03 03:01:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2023-04-03 03:01:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:01:50,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:50,476 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] [2023-04-03 03:01:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:01:50,476 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:50,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -693197803, now seen corresponding path program 1 times [2023-04-03 03:01:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838343711] [2023-04-03 03:01:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:50,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:50,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838343711] [2023-04-03 03:01:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838343711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785646084] [2023-04-03 03:01:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:50,755 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:51,567 INFO L93 Difference]: Finished difference Result 600 states and 749 transitions. [2023-04-03 03:01:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:51,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 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 67 [2023-04-03 03:01:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:51,570 INFO L225 Difference]: With dead ends: 600 [2023-04-03 03:01:51,570 INFO L226 Difference]: Without dead ends: 595 [2023-04-03 03:01:51,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:01:51,571 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1021 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:51,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 921 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-04-03 03:01:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 302. [2023-04-03 03:01:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.2743055555555556) internal successors, (367), 298 states have internal predecessors, (367), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 370 transitions. [2023-04-03 03:01:51,664 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 370 transitions. Word has length 67 [2023-04-03 03:01:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 370 transitions. [2023-04-03 03:01:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 370 transitions. [2023-04-03 03:01:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:01:51,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:51,665 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] [2023-04-03 03:01:51,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:01:51,666 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:51,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1221661879, now seen corresponding path program 1 times [2023-04-03 03:01:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643066767] [2023-04-03 03:01:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:52,264 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 03:01:52,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643066767] [2023-04-03 03:01:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643066767] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:52,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:52,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104749261] [2023-04-03 03:01:52,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:52,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:52,267 INFO L87 Difference]: Start difference. First operand 302 states and 370 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 03:01:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:53,211 INFO L93 Difference]: Finished difference Result 527 states and 651 transitions. [2023-04-03 03:01:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 68 [2023-04-03 03:01:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:53,213 INFO L225 Difference]: With dead ends: 527 [2023-04-03 03:01:53,213 INFO L226 Difference]: Without dead ends: 453 [2023-04-03 03:01:53,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:53,214 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1405 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1308 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-04-03 03:01:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 292. [2023-04-03 03:01:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 279 states have (on average 1.2616487455197132) internal successors, (352), 288 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2023-04-03 03:01:53,316 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 68 [2023-04-03 03:01:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:53,317 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2023-04-03 03:01:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 03:01:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2023-04-03 03:01:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:01:53,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:53,318 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] [2023-04-03 03:01:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:01:53,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:53,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1699245425, now seen corresponding path program 1 times [2023-04-03 03:01:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523851799] [2023-04-03 03:01:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:53,798 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 03:01:53,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523851799] [2023-04-03 03:01:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523851799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:53,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265918697] [2023-04-03 03:01:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:53,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:53,800 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 03:01:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:54,552 INFO L93 Difference]: Finished difference Result 554 states and 700 transitions. [2023-04-03 03:01:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 68 [2023-04-03 03:01:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:54,555 INFO L225 Difference]: With dead ends: 554 [2023-04-03 03:01:54,555 INFO L226 Difference]: Without dead ends: 444 [2023-04-03 03:01:54,556 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 03:01:54,556 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1134 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:54,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1619 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-04-03 03:01:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 250. [2023-04-03 03:01:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 240 states have (on average 1.25) internal successors, (300), 246 states have internal predecessors, (300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2023-04-03 03:01:54,666 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 68 [2023-04-03 03:01:54,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:54,666 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2023-04-03 03:01:54,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 03:01:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2023-04-03 03:01:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:01:54,667 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:54,667 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] [2023-04-03 03:01:54,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:01:54,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:54,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 226477540, now seen corresponding path program 1 times [2023-04-03 03:01:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78714936] [2023-04-03 03:01:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:55,892 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 03:01:55,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78714936] [2023-04-03 03:01:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78714936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:55,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 03:01:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756134247] [2023-04-03 03:01:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 03:01:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 03:01:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-04-03 03:01:55,894 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 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 03:01:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:58,596 INFO L93 Difference]: Finished difference Result 573 states and 702 transitions. [2023-04-03 03:01:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-03 03:01:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 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 68 [2023-04-03 03:01:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:58,598 INFO L225 Difference]: With dead ends: 573 [2023-04-03 03:01:58,598 INFO L226 Difference]: Without dead ends: 501 [2023-04-03 03:01:58,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=344, Invalid=1462, Unknown=0, NotChecked=0, Total=1806 [2023-04-03 03:01:58,600 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1223 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:58,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3916 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:01:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-04-03 03:01:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 261. [2023-04-03 03:01:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 251 states have (on average 1.250996015936255) internal successors, (314), 257 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 317 transitions. [2023-04-03 03:01:58,696 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 317 transitions. Word has length 68 [2023-04-03 03:01:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:58,696 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 317 transitions. [2023-04-03 03:01:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 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 03:01:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 317 transitions. [2023-04-03 03:01:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:01:58,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:58,697 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] [2023-04-03 03:01:58,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:01:58,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:58,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1890467060, now seen corresponding path program 1 times [2023-04-03 03:01:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496691655] [2023-04-03 03:01:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:01:59,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496691655] [2023-04-03 03:01:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496691655] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:59,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:59,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:01:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285532361] [2023-04-03 03:01:59,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:59,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:01:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:59,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:01:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:01:59,120 INFO L87 Difference]: Start difference. First operand 261 states and 317 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 03:01:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:59,834 INFO L93 Difference]: Finished difference Result 515 states and 641 transitions. [2023-04-03 03:01:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 68 [2023-04-03 03:01:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:59,835 INFO L225 Difference]: With dead ends: 515 [2023-04-03 03:01:59,835 INFO L226 Difference]: Without dead ends: 373 [2023-04-03 03:01:59,836 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 03:01:59,836 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 676 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:59,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1223 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-04-03 03:01:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 187. [2023-04-03 03:01:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2320441988950277) internal successors, (223), 183 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2023-04-03 03:01:59,924 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 68 [2023-04-03 03:01:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:59,924 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2023-04-03 03:01:59,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 03:01:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2023-04-03 03:01:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:59,925 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:59,925 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] [2023-04-03 03:01:59,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:01:59,926 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:59,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1768967249, now seen corresponding path program 1 times [2023-04-03 03:01:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:59,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628210573] [2023-04-03 03:01:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:59,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:00,180 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 03:02:00,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628210573] [2023-04-03 03:02:00,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628210573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:00,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:02:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124299463] [2023-04-03 03:02:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:02:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:02:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:02:00,182 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:00,682 INFO L93 Difference]: Finished difference Result 298 states and 365 transitions. [2023-04-03 03:02:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:02:00,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:02:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:00,684 INFO L225 Difference]: With dead ends: 298 [2023-04-03 03:02:00,684 INFO L226 Difference]: Without dead ends: 291 [2023-04-03 03:02:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:02:00,685 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 725 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 394 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:02:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-04-03 03:02:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 187. [2023-04-03 03:02:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2265193370165746) internal successors, (222), 183 states have internal predecessors, (222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2023-04-03 03:02:00,781 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 69 [2023-04-03 03:02:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:00,782 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2023-04-03 03:02:00,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2023-04-03 03:02:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:02:00,782 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:00,782 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] [2023-04-03 03:02:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:02:00,783 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:00,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1227200633, now seen corresponding path program 1 times [2023-04-03 03:02:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579244146] [2023-04-03 03:02:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:01,232 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 03:02:01,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:01,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579244146] [2023-04-03 03:02:01,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579244146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:01,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:01,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:02:01,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654132780] [2023-04-03 03:02:01,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:01,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:02:01,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:02:01,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:02:01,234 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:02,740 INFO L93 Difference]: Finished difference Result 870 states and 1123 transitions. [2023-04-03 03:02:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:02:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 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 69 [2023-04-03 03:02:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:02,748 INFO L225 Difference]: With dead ends: 870 [2023-04-03 03:02:02,748 INFO L226 Difference]: Without dead ends: 772 [2023-04-03 03:02:02,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:02:02,750 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1906 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:02,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 779 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:02:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-04-03 03:02:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 195. [2023-04-03 03:02:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.216931216931217) internal successors, (230), 191 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions. [2023-04-03 03:02:02,869 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 69 [2023-04-03 03:02:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:02,869 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions. [2023-04-03 03:02:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions. [2023-04-03 03:02:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:02:02,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:02,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:02:02,870 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:02,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 191760798, now seen corresponding path program 1 times [2023-04-03 03:02:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637514450] [2023-04-03 03:02:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:03,115 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 03:02:03,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637514450] [2023-04-03 03:02:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637514450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:02:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734085196] [2023-04-03 03:02:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:03,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:02:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:02:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:02:03,118 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:03,642 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2023-04-03 03:02:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:02:03,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 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 70 [2023-04-03 03:02:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:03,644 INFO L225 Difference]: With dead ends: 413 [2023-04-03 03:02:03,644 INFO L226 Difference]: Without dead ends: 315 [2023-04-03 03:02:03,645 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 03:02:03,646 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 496 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:03,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 436 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:02:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-04-03 03:02:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 187. [2023-04-03 03:02:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2154696132596685) internal successors, (220), 183 states have internal predecessors, (220), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2023-04-03 03:02:03,758 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 70 [2023-04-03 03:02:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:03,758 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2023-04-03 03:02:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2023-04-03 03:02:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:02:03,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:03,759 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] [2023-04-03 03:02:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:02:03,759 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:03,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1089602590, now seen corresponding path program 1 times [2023-04-03 03:02:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:03,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471093758] [2023-04-03 03:02:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:04,823 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 03:02:04,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471093758] [2023-04-03 03:02:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471093758] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:04,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 03:02:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644326144] [2023-04-03 03:02:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 03:02:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 03:02:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:02:04,825 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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 03:02:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:06,329 INFO L93 Difference]: Finished difference Result 359 states and 447 transitions. [2023-04-03 03:02:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 03:02:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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 71 [2023-04-03 03:02:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:06,331 INFO L225 Difference]: With dead ends: 359 [2023-04-03 03:02:06,331 INFO L226 Difference]: Without dead ends: 353 [2023-04-03 03:02:06,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2023-04-03 03:02:06,332 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 508 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:06,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1981 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:02:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-04-03 03:02:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 198. [2023-04-03 03:02:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.21875) internal successors, (234), 194 states have internal predecessors, (234), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 237 transitions. [2023-04-03 03:02:06,437 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 237 transitions. Word has length 71 [2023-04-03 03:02:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:06,438 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 237 transitions. [2023-04-03 03:02:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 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 03:02:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 237 transitions. [2023-04-03 03:02:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:02:06,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:06,438 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] [2023-04-03 03:02:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:02:06,439 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:06,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1209834038, now seen corresponding path program 1 times [2023-04-03 03:02:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946597864] [2023-04-03 03:02:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:07,462 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 03:02:07,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946597864] [2023-04-03 03:02:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946597864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:07,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-03 03:02:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504415755] [2023-04-03 03:02:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:07,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-03 03:02:07,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:07,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-03 03:02:07,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:02:07,466 INFO L87 Difference]: Start difference. First operand 198 states and 237 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 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 03:02:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:08,735 INFO L93 Difference]: Finished difference Result 222 states and 261 transitions. [2023-04-03 03:02:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:02:08,736 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 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 71 [2023-04-03 03:02:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:08,737 INFO L225 Difference]: With dead ends: 222 [2023-04-03 03:02:08,737 INFO L226 Difference]: Without dead ends: 214 [2023-04-03 03:02:08,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2023-04-03 03:02:08,738 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 384 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:08,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1164 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:02:08,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-04-03 03:02:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2023-04-03 03:02:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.219387755102041) internal successors, (239), 198 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 242 transitions. [2023-04-03 03:02:08,861 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 242 transitions. Word has length 71 [2023-04-03 03:02:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:08,862 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 242 transitions. [2023-04-03 03:02:08,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 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 03:02:08,862 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 242 transitions. [2023-04-03 03:02:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:02:08,862 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:08,862 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] [2023-04-03 03:02:08,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:02:08,863 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:08,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1234932562, now seen corresponding path program 1 times [2023-04-03 03:02:08,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:08,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710868146] [2023-04-03 03:02:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:10,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710868146] [2023-04-03 03:02:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710868146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:10,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-03 03:02:10,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979347309] [2023-04-03 03:02:10,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:10,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-03 03:02:10,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-03 03:02:10,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:02:10,199 INFO L87 Difference]: Start difference. First operand 202 states and 242 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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 03:02:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:11,750 INFO L93 Difference]: Finished difference Result 214 states and 253 transitions. [2023-04-03 03:02:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-03 03:02:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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 72 [2023-04-03 03:02:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:11,751 INFO L225 Difference]: With dead ends: 214 [2023-04-03 03:02:11,751 INFO L226 Difference]: Without dead ends: 202 [2023-04-03 03:02:11,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2023-04-03 03:02:11,752 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 470 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:11,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1377 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:02:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-04-03 03:02:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2023-04-03 03:02:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.217616580310881) internal successors, (235), 195 states have internal predecessors, (235), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2023-04-03 03:02:11,853 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 72 [2023-04-03 03:02:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2023-04-03 03:02:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 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 03:02:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2023-04-03 03:02:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:02:11,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:11,855 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] [2023-04-03 03:02:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:02:11,855 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:11,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1807069870, now seen corresponding path program 1 times [2023-04-03 03:02:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837149777] [2023-04-03 03:02:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:12,279 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 03:02:12,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837149777] [2023-04-03 03:02:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837149777] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:12,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:12,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:02:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97033698] [2023-04-03 03:02:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:12,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:02:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:02:12,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:02:12,282 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 03:02:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:13,265 INFO L93 Difference]: Finished difference Result 457 states and 574 transitions. [2023-04-03 03:02:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:02:13,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 72 [2023-04-03 03:02:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:13,267 INFO L225 Difference]: With dead ends: 457 [2023-04-03 03:02:13,267 INFO L226 Difference]: Without dead ends: 451 [2023-04-03 03:02:13,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:02:13,268 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 473 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:13,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1291 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:02:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-04-03 03:02:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 187. [2023-04-03 03:02:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 183 states have internal predecessors, (220), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2023-04-03 03:02:13,394 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 72 [2023-04-03 03:02:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:13,394 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2023-04-03 03:02:13,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 03:02:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2023-04-03 03:02:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:02:13,395 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:13,395 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] [2023-04-03 03:02:13,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:02:13,396 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:13,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 907468321, now seen corresponding path program 1 times [2023-04-03 03:02:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:13,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734762048] [2023-04-03 03:02:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:13,809 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 03:02:13,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734762048] [2023-04-03 03:02:13,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734762048] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:13,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:13,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:02:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434841291] [2023-04-03 03:02:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:13,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:02:13,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:02:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:02:13,811 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 03:02:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:14,574 INFO L93 Difference]: Finished difference Result 475 states and 597 transitions. [2023-04-03 03:02:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:02:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 72 [2023-04-03 03:02:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:14,576 INFO L225 Difference]: With dead ends: 475 [2023-04-03 03:02:14,576 INFO L226 Difference]: Without dead ends: 463 [2023-04-03 03:02:14,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:02:14,577 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 433 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:14,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1280 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:02:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-04-03 03:02:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 169. [2023-04-03 03:02:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.206060606060606) internal successors, (199), 165 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2023-04-03 03:02:14,689 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 72 [2023-04-03 03:02:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:14,690 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2023-04-03 03:02:14,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 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 03:02:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2023-04-03 03:02:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 03:02:14,690 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:14,690 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 03:02:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:02:14,691 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:14,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 637042568, now seen corresponding path program 1 times [2023-04-03 03:02:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:14,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267246009] [2023-04-03 03:02:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:14,795 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 03:02:14,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267246009] [2023-04-03 03:02:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267246009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:02:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748515304] [2023-04-03 03:02:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:02:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:02:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:02:14,797 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 03:02:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:14,947 INFO L93 Difference]: Finished difference Result 245 states and 304 transitions. [2023-04-03 03:02:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:02:14,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 85 [2023-04-03 03:02:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:14,948 INFO L225 Difference]: With dead ends: 245 [2023-04-03 03:02:14,948 INFO L226 Difference]: Without dead ends: 210 [2023-04-03 03:02:14,948 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 03:02:14,949 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:14,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 239 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-04-03 03:02:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2023-04-03 03:02:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.2244897959183674) internal successors, (240), 196 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2023-04-03 03:02:15,116 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 85 [2023-04-03 03:02:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:15,116 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2023-04-03 03:02:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 03:02:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2023-04-03 03:02:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:02:15,116 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:15,117 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, 1, 1, 1, 1] [2023-04-03 03:02:15,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:02:15,117 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:15,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 614584424, now seen corresponding path program 1 times [2023-04-03 03:02:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:15,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146876223] [2023-04-03 03:02:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:15,232 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 03:02:15,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146876223] [2023-04-03 03:02:15,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146876223] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:15,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:15,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:02:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025164311] [2023-04-03 03:02:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:02:15,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:02:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:02:15,234 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 03:02:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:15,477 INFO L93 Difference]: Finished difference Result 394 states and 505 transitions. [2023-04-03 03:02:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:02:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 03:02:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:15,478 INFO L225 Difference]: With dead ends: 394 [2023-04-03 03:02:15,479 INFO L226 Difference]: Without dead ends: 297 [2023-04-03 03:02:15,479 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 03:02:15,480 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 48 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:15,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 239 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-04-03 03:02:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 283. [2023-04-03 03:02:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 279 states have (on average 1.2616487455197132) internal successors, (352), 279 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 355 transitions. [2023-04-03 03:02:15,707 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 355 transitions. Word has length 88 [2023-04-03 03:02:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:15,707 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 355 transitions. [2023-04-03 03:02:15,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 03:02:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 355 transitions. [2023-04-03 03:02:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-03 03:02:15,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:15,708 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] [2023-04-03 03:02:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:02:15,708 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:15,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash -401028740, now seen corresponding path program 1 times [2023-04-03 03:02:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348414410] [2023-04-03 03:02:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:15,827 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 03:02:15,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:15,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348414410] [2023-04-03 03:02:15,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348414410] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:15,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:02:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362857862] [2023-04-03 03:02:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:15,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:02:15,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:02:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:02:15,829 INFO L87 Difference]: Start difference. First operand 283 states and 355 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 03:02:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:16,328 INFO L93 Difference]: Finished difference Result 643 states and 841 transitions. [2023-04-03 03:02:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:02:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 91 [2023-04-03 03:02:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:16,334 INFO L225 Difference]: With dead ends: 643 [2023-04-03 03:02:16,334 INFO L226 Difference]: Without dead ends: 463 [2023-04-03 03:02:16,334 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 03:02:16,335 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 41 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:16,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 239 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-04-03 03:02:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 437. [2023-04-03 03:02:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 433 states have (on average 1.2886836027713626) internal successors, (558), 433 states have internal predecessors, (558), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 561 transitions. [2023-04-03 03:02:16,724 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 561 transitions. Word has length 91 [2023-04-03 03:02:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:16,724 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 561 transitions. [2023-04-03 03:02:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 03:02:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 561 transitions. [2023-04-03 03:02:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:02:16,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:16,724 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] [2023-04-03 03:02:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:02:16,725 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:16,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2072770647, now seen corresponding path program 1 times [2023-04-03 03:02:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795578799] [2023-04-03 03:02:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:16,841 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 03:02:16,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795578799] [2023-04-03 03:02:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795578799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:16,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:02:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357002630] [2023-04-03 03:02:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:16,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:02:16,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:02:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:02:16,843 INFO L87 Difference]: Start difference. First operand 437 states and 561 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 03:02:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:17,629 INFO L93 Difference]: Finished difference Result 1105 states and 1459 transitions. [2023-04-03 03:02:17,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:02:17,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 94 [2023-04-03 03:02:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:17,632 INFO L225 Difference]: With dead ends: 1105 [2023-04-03 03:02:17,632 INFO L226 Difference]: Without dead ends: 771 [2023-04-03 03:02:17,633 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 03:02:17,633 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 31 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:17,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 239 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-04-03 03:02:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 721. [2023-04-03 03:02:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 717 states have (on average 1.302649930264993) internal successors, (934), 717 states have internal predecessors, (934), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 937 transitions. [2023-04-03 03:02:18,336 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 937 transitions. Word has length 94 [2023-04-03 03:02:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:18,336 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 937 transitions. [2023-04-03 03:02:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 03:02:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 937 transitions. [2023-04-03 03:02:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-03 03:02:18,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:18,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:02:18,338 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:18,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1772932132, now seen corresponding path program 1 times [2023-04-03 03:02:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:18,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039891742] [2023-04-03 03:02:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:18,446 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 03:02:18,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:18,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039891742] [2023-04-03 03:02:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039891742] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:18,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:02:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866024994] [2023-04-03 03:02:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:02:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:02:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:02:18,448 INFO L87 Difference]: Start difference. First operand 721 states and 937 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 03:02:20,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:20,850 INFO L93 Difference]: Finished difference Result 2722 states and 3602 transitions. [2023-04-03 03:02:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:02:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 97 [2023-04-03 03:02:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:20,856 INFO L225 Difference]: With dead ends: 2722 [2023-04-03 03:02:20,856 INFO L226 Difference]: Without dead ends: 2104 [2023-04-03 03:02:20,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:02:20,858 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 514 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:20,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 753 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:02:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2023-04-03 03:02:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1051. [2023-04-03 03:02:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1047 states have (on average 1.2989493791786055) internal successors, (1360), 1047 states have internal predecessors, (1360), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1363 transitions. [2023-04-03 03:02:22,138 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1363 transitions. Word has length 97 [2023-04-03 03:02:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:22,139 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1363 transitions. [2023-04-03 03:02:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 03:02:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1363 transitions. [2023-04-03 03:02:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-03 03:02:22,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:22,139 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] [2023-04-03 03:02:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:02:22,140 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:22,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -893874380, now seen corresponding path program 1 times [2023-04-03 03:02:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576989864] [2023-04-03 03:02:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:22,326 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 03:02:22,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576989864] [2023-04-03 03:02:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576989864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:02:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253410092] [2023-04-03 03:02:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:02:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:02:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:02:22,330 INFO L87 Difference]: Start difference. First operand 1051 states and 1363 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 03:02:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:23,506 INFO L93 Difference]: Finished difference Result 2001 states and 2615 transitions. [2023-04-03 03:02:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 03:02:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 99 [2023-04-03 03:02:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:23,510 INFO L225 Difference]: With dead ends: 2001 [2023-04-03 03:02:23,510 INFO L226 Difference]: Without dead ends: 1053 [2023-04-03 03:02:23,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:02:23,512 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:23,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 295 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-04-03 03:02:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1051. [2023-04-03 03:02:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1047 states have (on average 1.2970391595033428) internal successors, (1358), 1047 states have internal predecessors, (1358), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1361 transitions. [2023-04-03 03:02:24,706 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1361 transitions. Word has length 99 [2023-04-03 03:02:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:24,706 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1361 transitions. [2023-04-03 03:02:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 03:02:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1361 transitions. [2023-04-03 03:02:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-03 03:02:24,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:24,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:02:24,707 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:24,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash 786933840, now seen corresponding path program 1 times [2023-04-03 03:02:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044275517] [2023-04-03 03:02:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:24,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044275517] [2023-04-03 03:02:24,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044275517] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:24,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:24,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:02:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502802812] [2023-04-03 03:02:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:02:24,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:02:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:02:24,770 INFO L87 Difference]: Start difference. First operand 1051 states and 1361 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 03:02:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:26,213 INFO L93 Difference]: Finished difference Result 2233 states and 2923 transitions. [2023-04-03 03:02:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:02:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 99 [2023-04-03 03:02:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:26,217 INFO L225 Difference]: With dead ends: 2233 [2023-04-03 03:02:26,217 INFO L226 Difference]: Without dead ends: 1285 [2023-04-03 03:02:26,218 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 03:02:26,219 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 65 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:26,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 186 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:02:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-04-03 03:02:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1283. [2023-04-03 03:02:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1279 states have (on average 1.2916340891321345) internal successors, (1652), 1279 states have internal predecessors, (1652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1655 transitions. [2023-04-03 03:02:27,657 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1655 transitions. Word has length 99 [2023-04-03 03:02:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1655 transitions. [2023-04-03 03:02:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 03:02:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1655 transitions. [2023-04-03 03:02:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:02:27,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:27,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:27,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:02:27,658 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:27,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash -634564250, now seen corresponding path program 1 times [2023-04-03 03:02:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482245482] [2023-04-03 03:02:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:27,897 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 03:02:27,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482245482] [2023-04-03 03:02:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482245482] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:27,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:27,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:02:27,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3858172] [2023-04-03 03:02:27,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:27,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:02:27,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:02:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:02:27,899 INFO L87 Difference]: Start difference. First operand 1283 states and 1655 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 03:02:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:30,088 INFO L93 Difference]: Finished difference Result 1773 states and 2248 transitions. [2023-04-03 03:02:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:02:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 100 [2023-04-03 03:02:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:30,093 INFO L225 Difference]: With dead ends: 1773 [2023-04-03 03:02:30,093 INFO L226 Difference]: Without dead ends: 1771 [2023-04-03 03:02:30,093 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 03:02:30,094 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 270 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:30,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 772 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:02:30,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2023-04-03 03:02:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1283. [2023-04-03 03:02:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1279 states have (on average 1.272869429241595) internal successors, (1628), 1279 states have internal predecessors, (1628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1631 transitions. [2023-04-03 03:02:31,585 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1631 transitions. Word has length 100 [2023-04-03 03:02:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:31,587 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1631 transitions. [2023-04-03 03:02:31,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 03:02:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1631 transitions. [2023-04-03 03:02:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:02:31,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:31,588 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 03:02:31,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:02:31,589 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:31,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash 720004804, now seen corresponding path program 1 times [2023-04-03 03:02:31,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:31,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109812346] [2023-04-03 03:02:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:31,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:02:32,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109812346] [2023-04-03 03:02:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109812346] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:02:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637176316] [2023-04-03 03:02:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:02:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:02:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:02:32,079 INFO L87 Difference]: Start difference. First operand 1283 states and 1631 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:37,856 INFO L93 Difference]: Finished difference Result 5511 states and 7011 transitions. [2023-04-03 03:02:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:02:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2023-04-03 03:02:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:37,867 INFO L225 Difference]: With dead ends: 5511 [2023-04-03 03:02:37,867 INFO L226 Difference]: Without dead ends: 4317 [2023-04-03 03:02:37,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:02:37,869 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1460 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:37,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 630 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:02:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2023-04-03 03:02:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 1291. [2023-04-03 03:02:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1287 states have (on average 1.2711732711732713) internal successors, (1636), 1287 states have internal predecessors, (1636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1639 transitions. [2023-04-03 03:02:39,344 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1639 transitions. Word has length 114 [2023-04-03 03:02:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:39,344 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1639 transitions. [2023-04-03 03:02:39,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1639 transitions. [2023-04-03 03:02:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:02:39,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:39,346 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 03:02:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:02:39,346 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:39,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 590407800, now seen corresponding path program 1 times [2023-04-03 03:02:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139301869] [2023-04-03 03:02:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:02:39,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:39,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139301869] [2023-04-03 03:02:39,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139301869] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:39,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:39,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:02:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072999856] [2023-04-03 03:02:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:02:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:02:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:02:39,610 INFO L87 Difference]: Start difference. First operand 1291 states and 1639 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:42,189 INFO L93 Difference]: Finished difference Result 3215 states and 4100 transitions. [2023-04-03 03:02:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:02:42,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-03 03:02:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:42,196 INFO L225 Difference]: With dead ends: 3215 [2023-04-03 03:02:42,196 INFO L226 Difference]: Without dead ends: 2021 [2023-04-03 03:02:42,198 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 03:02:42,198 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 422 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:42,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 333 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:02:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-04-03 03:02:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1283. [2023-04-03 03:02:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1279 states have (on average 1.2713057075840501) internal successors, (1626), 1279 states have internal predecessors, (1626), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1629 transitions. [2023-04-03 03:02:43,686 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1629 transitions. Word has length 115 [2023-04-03 03:02:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:43,686 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1629 transitions. [2023-04-03 03:02:43,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1629 transitions. [2023-04-03 03:02:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:02:43,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:43,687 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 03:02:43,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:02:43,688 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:43,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -573034305, now seen corresponding path program 1 times [2023-04-03 03:02:43,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:43,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935321551] [2023-04-03 03:02:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:02:44,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:44,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935321551] [2023-04-03 03:02:44,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935321551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-03 03:02:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308128682] [2023-04-03 03:02:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-03 03:02:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-03 03:02:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:02:44,614 INFO L87 Difference]: Start difference. First operand 1283 states and 1629 transitions. Second operand has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 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 03:02:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:48,456 INFO L93 Difference]: Finished difference Result 3680 states and 4704 transitions. [2023-04-03 03:02:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:02:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 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 116 [2023-04-03 03:02:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:48,462 INFO L225 Difference]: With dead ends: 3680 [2023-04-03 03:02:48,462 INFO L226 Difference]: Without dead ends: 2491 [2023-04-03 03:02:48,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2023-04-03 03:02:48,465 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 414 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:48,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1338 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:02:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-04-03 03:02:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 1293. [2023-04-03 03:02:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1289 states have (on average 1.2699767261442978) internal successors, (1637), 1289 states have internal predecessors, (1637), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1640 transitions. [2023-04-03 03:02:49,954 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1640 transitions. Word has length 116 [2023-04-03 03:02:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1640 transitions. [2023-04-03 03:02:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 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 03:02:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1640 transitions. [2023-04-03 03:02:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-03 03:02:49,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:49,956 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 03:02:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:02:49,956 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:49,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1071492577, now seen corresponding path program 1 times [2023-04-03 03:02:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:49,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470763934] [2023-04-03 03:02:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:53,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470763934] [2023-04-03 03:02:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470763934] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:02:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621758650] [2023-04-03 03:02:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:53,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:02:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:02:53,327 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 03:02:53,328 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 03:02:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:53,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 67 conjunts are in the unsatisfiable core [2023-04-03 03:02:53,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:03:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:03:00,490 INFO L327 TraceCheckSpWp]: Computing backward predicates...