/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:39:17,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:39:17,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:39:17,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:39:17,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:39:17,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:39:17,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:39:17,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:39:17,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:39:17,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:39:17,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:39:17,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 06:39:17,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:39:17,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:39:17,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:39:17,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:39:17,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:39:17,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:39:17,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:39:17,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:39:17,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:39:17,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:39:17,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:39:17,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:39:17,215 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:39:17,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:39:17,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:39:17,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:39:17,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:39:17,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:39:17,217 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:39:17,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:39:17,217 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:39:17,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:39:17,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:39:17,218 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:39:17,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:39:17,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:39:17,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:39:17,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:39:17,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:39:17,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:39:17,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:39:17,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:39:17,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:39:17,406 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:39:17,407 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:39:17,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:39:18,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:39:18,607 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:39:18,607 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:39:18,622 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1981b0ae6/356533158d87488fa88118f1ad67f1e7/FLAG740b43bc0 [2023-04-01 06:39:18,632 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1981b0ae6/356533158d87488fa88118f1ad67f1e7 [2023-04-01 06:39:18,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:39:18,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:39:18,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:39:18,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:39:18,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:39:18,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:39:18" (1/1) ... [2023-04-01 06:39:18,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be5cd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:18, skipping insertion in model container [2023-04-01 06:39:18,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:39:18" (1/1) ... [2023-04-01 06:39:18,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:39:18,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:39:18,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10929,10942] [2023-04-01 06:39:18,868 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14786,14799] [2023-04-01 06:39:18,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16007,16020] [2023-04-01 06:39:18,877 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16713,16726] [2023-04-01 06:39:18,884 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18257,18270] [2023-04-01 06:39:18,888 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18963,18976] [2023-04-01 06:39:18,892 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19992,20005] [2023-04-01 06:39:18,901 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2023-04-01 06:39:18,905 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23107,23120] [2023-04-01 06:39:18,909 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24144,24157] [2023-04-01 06:39:18,917 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26040,26053] [2023-04-01 06:39:18,932 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29948,29961] [2023-04-01 06:39:18,935 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30657,30670] [2023-04-01 06:39:18,938 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31689,31702] [2023-04-01 06:39:18,943 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33580,33593] [2023-04-01 06:39:18,952 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36793,36806] [2023-04-01 06:39:19,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:39:19,061 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:39:19,100 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10929,10942] [2023-04-01 06:39:19,109 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.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14786,14799] [2023-04-01 06:39:19,112 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16007,16020] [2023-04-01 06:39:19,115 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16713,16726] [2023-04-01 06:39:19,118 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18257,18270] [2023-04-01 06:39:19,120 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18963,18976] [2023-04-01 06:39:19,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19992,20005] [2023-04-01 06:39:19,150 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411] [2023-04-01 06:39:19,152 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23107,23120] [2023-04-01 06:39:19,155 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24144,24157] [2023-04-01 06:39:19,159 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26040,26053] [2023-04-01 06:39:19,167 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29948,29961] [2023-04-01 06:39:19,169 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30657,30670] [2023-04-01 06:39:19,171 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31689,31702] [2023-04-01 06:39:19,175 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33580,33593] [2023-04-01 06:39:19,184 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[36793,36806] [2023-04-01 06:39:19,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:39:19,256 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:39:19,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19 WrapperNode [2023-04-01 06:39:19,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:39:19,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:39:19,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:39:19,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:39:19,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:39:19,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:39:19,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:39:19,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:39:19,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (1/1) ... [2023-04-01 06:39:19,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:39:19,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:39:19,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:39:19,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:39:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:39:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:39:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:39:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:39:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:39:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:39:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:39:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:39:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:39:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:39:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:39:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:39:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:39:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:39:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:39:19,625 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:39:19,627 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:39:20,765 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:39:20,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:39:20,838 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:39:20,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:39:20 BoogieIcfgContainer [2023-04-01 06:39:20,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:39:20,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:39:20,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:39:20,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:39:20,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:39:18" (1/3) ... [2023-04-01 06:39:20,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37660792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:39:20, skipping insertion in model container [2023-04-01 06:39:20,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:39:19" (2/3) ... [2023-04-01 06:39:20,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37660792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:39:20, skipping insertion in model container [2023-04-01 06:39:20,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:39:20" (3/3) ... [2023-04-01 06:39:20,849 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:39:20,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:39:20,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-04-01 06:39:20,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:39:20,919 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;@5f15a954, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:39:20,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-04-01 06:39:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 608 states, 586 states have (on average 1.8549488054607508) internal successors, (1087), 603 states have internal predecessors, (1087), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:39:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-01 06:39:20,946 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:20,947 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] [2023-04-01 06:39:20,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:20,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1094690805, now seen corresponding path program 1 times [2023-04-01 06:39:20,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:20,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162848374] [2023-04-01 06:39:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:21,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162848374] [2023-04-01 06:39:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162848374] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:21,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:39:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819469721] [2023-04-01 06:39:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:39:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:39:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:39:21,623 INFO L87 Difference]: Start difference. First operand has 608 states, 586 states have (on average 1.8549488054607508) internal successors, (1087), 603 states have internal predecessors, (1087), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:21,998 INFO L93 Difference]: Finished difference Result 934 states and 1613 transitions. [2023-04-01 06:39:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:39:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 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 74 [2023-04-01 06:39:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:22,010 INFO L225 Difference]: With dead ends: 934 [2023-04-01 06:39:22,010 INFO L226 Difference]: Without dead ends: 481 [2023-04-01 06:39:22,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:39:22,027 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 2403 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:22,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 597 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:39:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-04-01 06:39:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2023-04-01 06:39:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 462 states have (on average 1.2857142857142858) internal successors, (594), 477 states have internal predecessors, (594), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 597 transitions. [2023-04-01 06:39:22,070 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 597 transitions. Word has length 74 [2023-04-01 06:39:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:22,070 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 597 transitions. [2023-04-01 06:39:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 597 transitions. [2023-04-01 06:39:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:39:22,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:22,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:22,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:39:22,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:22,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash 904417533, now seen corresponding path program 1 times [2023-04-01 06:39:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441125886] [2023-04-01 06:39:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:22,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:22,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441125886] [2023-04-01 06:39:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441125886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:22,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:39:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307010085] [2023-04-01 06:39:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:39:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:39:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:39:22,192 INFO L87 Difference]: Start difference. First operand 481 states and 597 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:22,452 INFO L93 Difference]: Finished difference Result 794 states and 1011 transitions. [2023-04-01 06:39:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:39:22,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-01 06:39:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:22,455 INFO L225 Difference]: With dead ends: 794 [2023-04-01 06:39:22,455 INFO L226 Difference]: Without dead ends: 423 [2023-04-01 06:39:22,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:39:22,458 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1512 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:22,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 323 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-04-01 06:39:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2023-04-01 06:39:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 404 states have (on average 1.3044554455445545) internal successors, (527), 419 states have internal predecessors, (527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 530 transitions. [2023-04-01 06:39:22,492 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 530 transitions. Word has length 75 [2023-04-01 06:39:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:22,492 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 530 transitions. [2023-04-01 06:39:22,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 530 transitions. [2023-04-01 06:39:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 06:39:22,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:22,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:22,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:39:22,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:22,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 408736247, now seen corresponding path program 1 times [2023-04-01 06:39:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859403250] [2023-04-01 06:39:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:22,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859403250] [2023-04-01 06:39:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859403250] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:22,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:39:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94036203] [2023-04-01 06:39:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:39:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:22,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:39:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:39:22,650 INFO L87 Difference]: Start difference. First operand 423 states and 530 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:22,864 INFO L93 Difference]: Finished difference Result 736 states and 943 transitions. [2023-04-01 06:39:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:39:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-04-01 06:39:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:22,865 INFO L225 Difference]: With dead ends: 736 [2023-04-01 06:39:22,866 INFO L226 Difference]: Without dead ends: 397 [2023-04-01 06:39:22,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:39:22,867 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1404 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:22,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 297 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-04-01 06:39:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-04-01 06:39:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 378 states have (on average 1.312169312169312) internal successors, (496), 393 states have internal predecessors, (496), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 499 transitions. [2023-04-01 06:39:22,882 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 499 transitions. Word has length 76 [2023-04-01 06:39:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:22,883 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 499 transitions. [2023-04-01 06:39:22,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 499 transitions. [2023-04-01 06:39:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 06:39:22,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:22,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:39:22,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:22,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 807955519, now seen corresponding path program 1 times [2023-04-01 06:39:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628021720] [2023-04-01 06:39:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:22,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628021720] [2023-04-01 06:39:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628021720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:22,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:39:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265878736] [2023-04-01 06:39:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:22,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:39:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:39:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:39:22,987 INFO L87 Difference]: Start difference. First operand 397 states and 499 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:23,203 INFO L93 Difference]: Finished difference Result 710 states and 911 transitions. [2023-04-01 06:39:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:39:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2023-04-01 06:39:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:23,205 INFO L225 Difference]: With dead ends: 710 [2023-04-01 06:39:23,205 INFO L226 Difference]: Without dead ends: 387 [2023-04-01 06:39:23,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:39:23,206 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1346 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:23,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 269 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-04-01 06:39:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-04-01 06:39:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 368 states have (on average 1.3125) internal successors, (483), 383 states have internal predecessors, (483), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 486 transitions. [2023-04-01 06:39:23,221 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 486 transitions. Word has length 77 [2023-04-01 06:39:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:23,221 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 486 transitions. [2023-04-01 06:39:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 486 transitions. [2023-04-01 06:39:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 06:39:23,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:23,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:39:23,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:23,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 414812953, now seen corresponding path program 1 times [2023-04-01 06:39:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503582720] [2023-04-01 06:39:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:23,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503582720] [2023-04-01 06:39:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503582720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:23,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:23,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:39:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122772129] [2023-04-01 06:39:23,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:39:23,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:39:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:39:23,333 INFO L87 Difference]: Start difference. First operand 387 states and 486 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:23,596 INFO L93 Difference]: Finished difference Result 890 states and 1139 transitions. [2023-04-01 06:39:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:39:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-01 06:39:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:23,598 INFO L225 Difference]: With dead ends: 890 [2023-04-01 06:39:23,598 INFO L226 Difference]: Without dead ends: 560 [2023-04-01 06:39:23,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:39:23,599 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1766 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:23,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 426 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-01 06:39:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 500. [2023-04-01 06:39:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3596673596673596) internal successors, (654), 496 states have internal predecessors, (654), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 657 transitions. [2023-04-01 06:39:23,624 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 657 transitions. Word has length 78 [2023-04-01 06:39:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:23,624 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 657 transitions. [2023-04-01 06:39:23,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 657 transitions. [2023-04-01 06:39:23,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:23,625 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:23,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:39:23,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:23,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1214241612, now seen corresponding path program 1 times [2023-04-01 06:39:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957663351] [2023-04-01 06:39:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:23,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957663351] [2023-04-01 06:39:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957663351] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:23,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:23,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711011077] [2023-04-01 06:39:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:23,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:23,882 INFO L87 Difference]: Start difference. First operand 500 states and 657 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:24,499 INFO L93 Difference]: Finished difference Result 1013 states and 1329 transitions. [2023-04-01 06:39:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:24,504 INFO L225 Difference]: With dead ends: 1013 [2023-04-01 06:39:24,504 INFO L226 Difference]: Without dead ends: 921 [2023-04-01 06:39:24,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:24,506 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 2030 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:24,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 1209 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-04-01 06:39:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 500. [2023-04-01 06:39:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3575883575883576) internal successors, (653), 496 states have internal predecessors, (653), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 656 transitions. [2023-04-01 06:39:24,540 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 656 transitions. Word has length 79 [2023-04-01 06:39:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:24,541 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 656 transitions. [2023-04-01 06:39:24,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 656 transitions. [2023-04-01 06:39:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:24,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:24,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:24,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:39:24,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:24,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash 133556115, now seen corresponding path program 1 times [2023-04-01 06:39:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418039686] [2023-04-01 06:39:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:24,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:24,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418039686] [2023-04-01 06:39:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418039686] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503048583] [2023-04-01 06:39:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:24,962 INFO L87 Difference]: Start difference. First operand 500 states and 656 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:25,758 INFO L93 Difference]: Finished difference Result 1050 states and 1372 transitions. [2023-04-01 06:39:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 06:39:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:25,793 INFO L225 Difference]: With dead ends: 1050 [2023-04-01 06:39:25,793 INFO L226 Difference]: Without dead ends: 958 [2023-04-01 06:39:25,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 06:39:25,794 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1804 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 1550 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-04-01 06:39:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 507. [2023-04-01 06:39:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.3586065573770492) internal successors, (663), 503 states have internal predecessors, (663), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 666 transitions. [2023-04-01 06:39:25,842 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 666 transitions. Word has length 79 [2023-04-01 06:39:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:25,842 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 666 transitions. [2023-04-01 06:39:25,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 666 transitions. [2023-04-01 06:39:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:25,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:25,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:39:25,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:25,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1925051142, now seen corresponding path program 1 times [2023-04-01 06:39:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606418321] [2023-04-01 06:39:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:26,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606418321] [2023-04-01 06:39:26,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606418321] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:26,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:26,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:26,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528129158] [2023-04-01 06:39:26,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:26,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:26,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:26,151 INFO L87 Difference]: Start difference. First operand 507 states and 666 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:27,026 INFO L93 Difference]: Finished difference Result 1146 states and 1503 transitions. [2023-04-01 06:39:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:39:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:27,029 INFO L225 Difference]: With dead ends: 1146 [2023-04-01 06:39:27,029 INFO L226 Difference]: Without dead ends: 1032 [2023-04-01 06:39:27,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-04-01 06:39:27,030 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2729 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 1926 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:39:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-04-01 06:39:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 507. [2023-04-01 06:39:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.3565573770491803) internal successors, (662), 503 states have internal predecessors, (662), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 665 transitions. [2023-04-01 06:39:27,070 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 665 transitions. Word has length 79 [2023-04-01 06:39:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:27,070 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 665 transitions. [2023-04-01 06:39:27,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 665 transitions. [2023-04-01 06:39:27,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:27,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:27,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:27,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:39:27,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:27,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash 626538030, now seen corresponding path program 1 times [2023-04-01 06:39:27,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:27,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402758180] [2023-04-01 06:39:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:27,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402758180] [2023-04-01 06:39:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402758180] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:27,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:27,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:39:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700435488] [2023-04-01 06:39:27,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:27,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:39:27,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:39:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:39:27,355 INFO L87 Difference]: Start difference. First operand 507 states and 665 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:28,005 INFO L93 Difference]: Finished difference Result 1018 states and 1337 transitions. [2023-04-01 06:39:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:39:28,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:28,008 INFO L225 Difference]: With dead ends: 1018 [2023-04-01 06:39:28,008 INFO L226 Difference]: Without dead ends: 920 [2023-04-01 06:39:28,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 06:39:28,009 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2056 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:28,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 1483 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-04-01 06:39:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 507. [2023-04-01 06:39:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.3524590163934427) internal successors, (660), 503 states have internal predecessors, (660), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 663 transitions. [2023-04-01 06:39:28,052 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 663 transitions. Word has length 79 [2023-04-01 06:39:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:28,052 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 663 transitions. [2023-04-01 06:39:28,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 663 transitions. [2023-04-01 06:39:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:28,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:28,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:28,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:39:28,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:28,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:28,054 INFO L85 PathProgramCache]: Analyzing trace with hash -723480935, now seen corresponding path program 1 times [2023-04-01 06:39:28,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:28,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256203210] [2023-04-01 06:39:28,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:28,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:28,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256203210] [2023-04-01 06:39:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256203210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:28,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:39:28,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301093283] [2023-04-01 06:39:28,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:28,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:39:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:39:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:39:28,340 INFO L87 Difference]: Start difference. First operand 507 states and 663 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:29,064 INFO L93 Difference]: Finished difference Result 1068 states and 1410 transitions. [2023-04-01 06:39:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:39:29,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:29,068 INFO L225 Difference]: With dead ends: 1068 [2023-04-01 06:39:29,068 INFO L226 Difference]: Without dead ends: 944 [2023-04-01 06:39:29,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 06:39:29,069 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2004 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:29,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 1701 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-04-01 06:39:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 507. [2023-04-01 06:39:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.348360655737705) internal successors, (658), 503 states have internal predecessors, (658), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 661 transitions. [2023-04-01 06:39:29,134 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 661 transitions. Word has length 79 [2023-04-01 06:39:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:29,134 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 661 transitions. [2023-04-01 06:39:29,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 661 transitions. [2023-04-01 06:39:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:39:29,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:29,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:29,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:39:29,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:29,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:29,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2105855059, now seen corresponding path program 1 times [2023-04-01 06:39:29,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:29,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026829092] [2023-04-01 06:39:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:29,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:29,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026829092] [2023-04-01 06:39:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026829092] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:39:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321893247] [2023-04-01 06:39:29,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:29,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:39:29,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:39:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:39:29,380 INFO L87 Difference]: Start difference. First operand 507 states and 661 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:29,860 INFO L93 Difference]: Finished difference Result 917 states and 1157 transitions. [2023-04-01 06:39:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:39:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-01 06:39:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:29,863 INFO L225 Difference]: With dead ends: 917 [2023-04-01 06:39:29,863 INFO L226 Difference]: Without dead ends: 689 [2023-04-01 06:39:29,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-01 06:39:29,865 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 2654 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 603 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:39:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-04-01 06:39:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 507. [2023-04-01 06:39:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.346311475409836) internal successors, (657), 503 states have internal predecessors, (657), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 660 transitions. [2023-04-01 06:39:29,996 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 660 transitions. Word has length 79 [2023-04-01 06:39:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:29,996 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 660 transitions. [2023-04-01 06:39:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 660 transitions. [2023-04-01 06:39:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:29,997 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:29,998 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] [2023-04-01 06:39:29,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:39:29,998 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:29,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -183683999, now seen corresponding path program 1 times [2023-04-01 06:39:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434446460] [2023-04-01 06:39:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:30,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434446460] [2023-04-01 06:39:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434446460] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:30,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:30,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:30,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469432835] [2023-04-01 06:39:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:30,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:30,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:30,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:30,401 INFO L87 Difference]: Start difference. First operand 507 states and 660 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:31,233 INFO L93 Difference]: Finished difference Result 1057 states and 1391 transitions. [2023-04-01 06:39:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:31,236 INFO L225 Difference]: With dead ends: 1057 [2023-04-01 06:39:31,236 INFO L226 Difference]: Without dead ends: 952 [2023-04-01 06:39:31,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:31,237 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1988 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:31,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 1298 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-04-01 06:39:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 507. [2023-04-01 06:39:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.3442622950819672) internal successors, (656), 503 states have internal predecessors, (656), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 659 transitions. [2023-04-01 06:39:31,296 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 659 transitions. Word has length 81 [2023-04-01 06:39:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:31,296 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 659 transitions. [2023-04-01 06:39:31,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 659 transitions. [2023-04-01 06:39:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:31,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:31,297 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] [2023-04-01 06:39:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:39:31,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:31,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash -441184552, now seen corresponding path program 1 times [2023-04-01 06:39:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019607514] [2023-04-01 06:39:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:31,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019607514] [2023-04-01 06:39:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019607514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656134956] [2023-04-01 06:39:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:31,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:31,543 INFO L87 Difference]: Start difference. First operand 507 states and 659 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:32,324 INFO L93 Difference]: Finished difference Result 1016 states and 1327 transitions. [2023-04-01 06:39:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:32,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:32,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:32,327 INFO L225 Difference]: With dead ends: 1016 [2023-04-01 06:39:32,327 INFO L226 Difference]: Without dead ends: 928 [2023-04-01 06:39:32,327 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 [2023-04-01 06:39:32,327 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1238 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:32,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1379 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-04-01 06:39:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 507. [2023-04-01 06:39:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 488 states have (on average 1.3422131147540983) internal successors, (655), 503 states have internal predecessors, (655), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 658 transitions. [2023-04-01 06:39:32,386 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 658 transitions. Word has length 81 [2023-04-01 06:39:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:32,386 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 658 transitions. [2023-04-01 06:39:32,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 658 transitions. [2023-04-01 06:39:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:32,387 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:32,387 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] [2023-04-01 06:39:32,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:39:32,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:32,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 604012532, now seen corresponding path program 1 times [2023-04-01 06:39:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:32,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829875888] [2023-04-01 06:39:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:32,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:32,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829875888] [2023-04-01 06:39:32,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829875888] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:32,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:32,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200373206] [2023-04-01 06:39:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:32,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:32,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:32,655 INFO L87 Difference]: Start difference. First operand 507 states and 658 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:33,448 INFO L93 Difference]: Finished difference Result 1020 states and 1330 transitions. [2023-04-01 06:39:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:33,451 INFO L225 Difference]: With dead ends: 1020 [2023-04-01 06:39:33,451 INFO L226 Difference]: Without dead ends: 928 [2023-04-01 06:39:33,452 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 [2023-04-01 06:39:33,452 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1811 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:33,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 1387 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-04-01 06:39:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 503. [2023-04-01 06:39:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 484 states have (on average 1.3388429752066116) internal successors, (648), 499 states have internal predecessors, (648), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 651 transitions. [2023-04-01 06:39:33,511 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 651 transitions. Word has length 81 [2023-04-01 06:39:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 651 transitions. [2023-04-01 06:39:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 651 transitions. [2023-04-01 06:39:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:33,512 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:33,512 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] [2023-04-01 06:39:33,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 06:39:33,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:33,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1454594725, now seen corresponding path program 1 times [2023-04-01 06:39:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:33,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918671568] [2023-04-01 06:39:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:33,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918671568] [2023-04-01 06:39:33,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918671568] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:33,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:33,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740981298] [2023-04-01 06:39:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:33,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:33,723 INFO L87 Difference]: Start difference. First operand 503 states and 651 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:34,417 INFO L93 Difference]: Finished difference Result 1062 states and 1391 transitions. [2023-04-01 06:39:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:34,420 INFO L225 Difference]: With dead ends: 1062 [2023-04-01 06:39:34,420 INFO L226 Difference]: Without dead ends: 948 [2023-04-01 06:39:34,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:34,421 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1523 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:34,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1142 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-04-01 06:39:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 500. [2023-04-01 06:39:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.338877338877339) internal successors, (644), 496 states have internal predecessors, (644), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 647 transitions. [2023-04-01 06:39:34,480 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 647 transitions. Word has length 81 [2023-04-01 06:39:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:34,481 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 647 transitions. [2023-04-01 06:39:34,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 647 transitions. [2023-04-01 06:39:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:34,482 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:34,482 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] [2023-04-01 06:39:34,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 06:39:34,482 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:34,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:34,482 INFO L85 PathProgramCache]: Analyzing trace with hash -142716083, now seen corresponding path program 1 times [2023-04-01 06:39:34,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:34,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056437284] [2023-04-01 06:39:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:34,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056437284] [2023-04-01 06:39:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056437284] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:34,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:34,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385445914] [2023-04-01 06:39:34,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:34,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:34,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:34,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:34,700 INFO L87 Difference]: Start difference. First operand 500 states and 647 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:35,351 INFO L93 Difference]: Finished difference Result 732 states and 952 transitions. [2023-04-01 06:39:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:35,353 INFO L225 Difference]: With dead ends: 732 [2023-04-01 06:39:35,354 INFO L226 Difference]: Without dead ends: 588 [2023-04-01 06:39:35,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:35,354 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1931 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:35,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 1158 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-04-01 06:39:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 500. [2023-04-01 06:39:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3367983367983367) internal successors, (643), 496 states have internal predecessors, (643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 646 transitions. [2023-04-01 06:39:35,416 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 646 transitions. Word has length 81 [2023-04-01 06:39:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:35,416 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 646 transitions. [2023-04-01 06:39:35,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 646 transitions. [2023-04-01 06:39:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:39:35,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:35,417 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] [2023-04-01 06:39:35,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 06:39:35,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:35,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1272458383, now seen corresponding path program 1 times [2023-04-01 06:39:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:35,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674235456] [2023-04-01 06:39:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:35,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:35,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674235456] [2023-04-01 06:39:35,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674235456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:35,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:35,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:39:35,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457310604] [2023-04-01 06:39:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:35,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:39:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:39:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:39:35,793 INFO L87 Difference]: Start difference. First operand 500 states and 646 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:36,730 INFO L93 Difference]: Finished difference Result 848 states and 1107 transitions. [2023-04-01 06:39:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:39:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-01 06:39:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:36,732 INFO L225 Difference]: With dead ends: 848 [2023-04-01 06:39:36,732 INFO L226 Difference]: Without dead ends: 638 [2023-04-01 06:39:36,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2023-04-01 06:39:36,733 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1713 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:36,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 1509 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-04-01 06:39:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 500. [2023-04-01 06:39:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3326403326403327) internal successors, (641), 496 states have internal predecessors, (641), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 644 transitions. [2023-04-01 06:39:36,800 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 644 transitions. Word has length 81 [2023-04-01 06:39:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:36,800 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 644 transitions. [2023-04-01 06:39:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 644 transitions. [2023-04-01 06:39:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:36,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:36,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:36,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 06:39:36,802 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:36,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1818901785, now seen corresponding path program 1 times [2023-04-01 06:39:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109943966] [2023-04-01 06:39:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:37,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109943966] [2023-04-01 06:39:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109943966] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:37,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712813033] [2023-04-01 06:39:37,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:37,011 INFO L87 Difference]: Start difference. First operand 500 states and 644 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:37,840 INFO L93 Difference]: Finished difference Result 979 states and 1262 transitions. [2023-04-01 06:39:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:37,842 INFO L225 Difference]: With dead ends: 979 [2023-04-01 06:39:37,842 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:37,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:37,843 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1787 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:37,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1333 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3305613305613306) internal successors, (640), 496 states have internal predecessors, (640), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 643 transitions. [2023-04-01 06:39:37,915 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 643 transitions. Word has length 83 [2023-04-01 06:39:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:37,915 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 643 transitions. [2023-04-01 06:39:37,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 643 transitions. [2023-04-01 06:39:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:37,916 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:37,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:37,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 06:39:37,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:37,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1513026241, now seen corresponding path program 1 times [2023-04-01 06:39:37,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:37,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195048289] [2023-04-01 06:39:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:37,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:38,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195048289] [2023-04-01 06:39:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195048289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:38,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023647735] [2023-04-01 06:39:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:38,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:38,369 INFO L87 Difference]: Start difference. First operand 500 states and 643 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:39,291 INFO L93 Difference]: Finished difference Result 977 states and 1258 transitions. [2023-04-01 06:39:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:39,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:39,294 INFO L225 Difference]: With dead ends: 977 [2023-04-01 06:39:39,294 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:39,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:39,295 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 2366 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:39,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 1297 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3284823284823284) internal successors, (639), 496 states have internal predecessors, (639), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 642 transitions. [2023-04-01 06:39:39,372 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 642 transitions. Word has length 83 [2023-04-01 06:39:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:39,372 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 642 transitions. [2023-04-01 06:39:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 642 transitions. [2023-04-01 06:39:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:39,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:39,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:39,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 06:39:39,373 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:39,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash -399347275, now seen corresponding path program 1 times [2023-04-01 06:39:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295998880] [2023-04-01 06:39:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:39,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:39,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295998880] [2023-04-01 06:39:39,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295998880] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:39,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:39,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755785549] [2023-04-01 06:39:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:39,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:39,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:39,609 INFO L87 Difference]: Start difference. First operand 500 states and 642 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:40,429 INFO L93 Difference]: Finished difference Result 979 states and 1259 transitions. [2023-04-01 06:39:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:40,432 INFO L225 Difference]: With dead ends: 979 [2023-04-01 06:39:40,432 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:40,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:40,433 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2349 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:40,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 1327 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3264033264033264) internal successors, (638), 496 states have internal predecessors, (638), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 641 transitions. [2023-04-01 06:39:40,512 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 641 transitions. Word has length 83 [2023-04-01 06:39:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:40,513 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 641 transitions. [2023-04-01 06:39:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 641 transitions. [2023-04-01 06:39:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:40,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:40,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 06:39:40,514 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:40,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1672846803, now seen corresponding path program 1 times [2023-04-01 06:39:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219961008] [2023-04-01 06:39:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:40,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219961008] [2023-04-01 06:39:40,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219961008] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:40,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501749007] [2023-04-01 06:39:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:40,702 INFO L87 Difference]: Start difference. First operand 500 states and 641 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:41,514 INFO L93 Difference]: Finished difference Result 902 states and 1152 transitions. [2023-04-01 06:39:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:41,517 INFO L225 Difference]: With dead ends: 902 [2023-04-01 06:39:41,517 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:41,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:41,518 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1736 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:41,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 1376 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3243243243243243) internal successors, (637), 496 states have internal predecessors, (637), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2023-04-01 06:39:41,601 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2023-04-01 06:39:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:41,601 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2023-04-01 06:39:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2023-04-01 06:39:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:41,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:41,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:41,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 06:39:41,603 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:41,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash 994334574, now seen corresponding path program 1 times [2023-04-01 06:39:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195431396] [2023-04-01 06:39:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:41,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195431396] [2023-04-01 06:39:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195431396] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:41,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817742243] [2023-04-01 06:39:41,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:41,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:41,810 INFO L87 Difference]: Start difference. First operand 500 states and 640 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:42,635 INFO L93 Difference]: Finished difference Result 982 states and 1259 transitions. [2023-04-01 06:39:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:42,638 INFO L225 Difference]: With dead ends: 982 [2023-04-01 06:39:42,638 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:42,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:42,639 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 2335 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:42,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 1350 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3222453222453223) internal successors, (636), 496 states have internal predecessors, (636), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 639 transitions. [2023-04-01 06:39:42,723 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 639 transitions. Word has length 83 [2023-04-01 06:39:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:42,723 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 639 transitions. [2023-04-01 06:39:42,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 639 transitions. [2023-04-01 06:39:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:42,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:42,724 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] [2023-04-01 06:39:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 06:39:42,724 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:42,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1371476210, now seen corresponding path program 1 times [2023-04-01 06:39:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628503184] [2023-04-01 06:39:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:42,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628503184] [2023-04-01 06:39:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628503184] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:42,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134680418] [2023-04-01 06:39:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:42,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:42,911 INFO L87 Difference]: Start difference. First operand 500 states and 639 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:43,736 INFO L93 Difference]: Finished difference Result 1018 states and 1312 transitions. [2023-04-01 06:39:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:43,739 INFO L225 Difference]: With dead ends: 1018 [2023-04-01 06:39:43,739 INFO L226 Difference]: Without dead ends: 921 [2023-04-01 06:39:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:43,740 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1127 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:43,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1524 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-04-01 06:39:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 500. [2023-04-01 06:39:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.32016632016632) internal successors, (635), 496 states have internal predecessors, (635), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 638 transitions. [2023-04-01 06:39:43,828 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 638 transitions. Word has length 83 [2023-04-01 06:39:43,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:43,828 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 638 transitions. [2023-04-01 06:39:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 638 transitions. [2023-04-01 06:39:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:43,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:43,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:43,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 06:39:43,829 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:43,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1958247223, now seen corresponding path program 1 times [2023-04-01 06:39:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596297068] [2023-04-01 06:39:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:44,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596297068] [2023-04-01 06:39:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596297068] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152924627] [2023-04-01 06:39:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:44,064 INFO L87 Difference]: Start difference. First operand 500 states and 638 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:44,919 INFO L93 Difference]: Finished difference Result 979 states and 1254 transitions. [2023-04-01 06:39:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:44,922 INFO L225 Difference]: With dead ends: 979 [2023-04-01 06:39:44,922 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:44,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:44,923 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2178 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:44,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 1421 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.318087318087318) internal successors, (634), 496 states have internal predecessors, (634), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 637 transitions. [2023-04-01 06:39:45,016 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 637 transitions. Word has length 83 [2023-04-01 06:39:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:45,016 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 637 transitions. [2023-04-01 06:39:45,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 637 transitions. [2023-04-01 06:39:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:45,017 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:45,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:45,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 06:39:45,017 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:45,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -166880030, now seen corresponding path program 1 times [2023-04-01 06:39:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368530458] [2023-04-01 06:39:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:45,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:45,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368530458] [2023-04-01 06:39:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368530458] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:45,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938318186] [2023-04-01 06:39:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:45,260 INFO L87 Difference]: Start difference. First operand 500 states and 637 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:46,205 INFO L93 Difference]: Finished difference Result 982 states and 1256 transitions. [2023-04-01 06:39:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:46,214 INFO L225 Difference]: With dead ends: 982 [2023-04-01 06:39:46,214 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:46,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:46,216 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1160 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:46,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1427 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.316008316008316) internal successors, (633), 496 states have internal predecessors, (633), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 636 transitions. [2023-04-01 06:39:46,448 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 636 transitions. Word has length 83 [2023-04-01 06:39:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:46,448 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 636 transitions. [2023-04-01 06:39:46,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 636 transitions. [2023-04-01 06:39:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:46,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:46,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:46,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-01 06:39:46,450 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:46,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1703591186, now seen corresponding path program 1 times [2023-04-01 06:39:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:46,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343934003] [2023-04-01 06:39:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:46,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:46,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343934003] [2023-04-01 06:39:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343934003] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:46,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:46,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27640472] [2023-04-01 06:39:46,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:46,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:46,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:46,833 INFO L87 Difference]: Start difference. First operand 500 states and 636 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:47,723 INFO L93 Difference]: Finished difference Result 985 states and 1258 transitions. [2023-04-01 06:39:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:47,726 INFO L225 Difference]: With dead ends: 985 [2023-04-01 06:39:47,726 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:47,726 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2261 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:47,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 1402 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3118503118503118) internal successors, (631), 496 states have internal predecessors, (631), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 634 transitions. [2023-04-01 06:39:47,819 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 634 transitions. Word has length 83 [2023-04-01 06:39:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:47,820 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 634 transitions. [2023-04-01 06:39:47,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 634 transitions. [2023-04-01 06:39:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:47,820 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:47,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:47,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-01 06:39:47,821 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:47,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash 225565326, now seen corresponding path program 1 times [2023-04-01 06:39:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:47,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885097237] [2023-04-01 06:39:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:47,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885097237] [2023-04-01 06:39:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885097237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262712250] [2023-04-01 06:39:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:47,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:47,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:47,993 INFO L87 Difference]: Start difference. First operand 500 states and 634 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:48,828 INFO L93 Difference]: Finished difference Result 1025 states and 1317 transitions. [2023-04-01 06:39:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:48,830 INFO L225 Difference]: With dead ends: 1025 [2023-04-01 06:39:48,830 INFO L226 Difference]: Without dead ends: 921 [2023-04-01 06:39:48,831 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 [2023-04-01 06:39:48,831 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 2155 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:48,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2155 Valid, 1522 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-04-01 06:39:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 500. [2023-04-01 06:39:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3076923076923077) internal successors, (629), 496 states have internal predecessors, (629), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 632 transitions. [2023-04-01 06:39:48,927 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 632 transitions. Word has length 83 [2023-04-01 06:39:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:48,927 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 632 transitions. [2023-04-01 06:39:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 632 transitions. [2023-04-01 06:39:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:48,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:48,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:48,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-01 06:39:48,928 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:48,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:48,929 INFO L85 PathProgramCache]: Analyzing trace with hash 808532232, now seen corresponding path program 1 times [2023-04-01 06:39:48,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:48,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409267660] [2023-04-01 06:39:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:49,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:49,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409267660] [2023-04-01 06:39:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409267660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:49,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068373958] [2023-04-01 06:39:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:49,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:49,093 INFO L87 Difference]: Start difference. First operand 500 states and 632 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:49,967 INFO L93 Difference]: Finished difference Result 1089 states and 1402 transitions. [2023-04-01 06:39:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:49,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:49,970 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 06:39:49,970 INFO L226 Difference]: Without dead ends: 945 [2023-04-01 06:39:49,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:49,971 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1563 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:49,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1666 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-04-01 06:39:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 500. [2023-04-01 06:39:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.3035343035343034) internal successors, (627), 496 states have internal predecessors, (627), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 630 transitions. [2023-04-01 06:39:50,070 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 630 transitions. Word has length 83 [2023-04-01 06:39:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:50,070 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 630 transitions. [2023-04-01 06:39:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 630 transitions. [2023-04-01 06:39:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:50,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:50,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-01 06:39:50,071 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:50,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 444888107, now seen corresponding path program 1 times [2023-04-01 06:39:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516029488] [2023-04-01 06:39:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:50,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516029488] [2023-04-01 06:39:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516029488] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:50,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767762856] [2023-04-01 06:39:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:50,266 INFO L87 Difference]: Start difference. First operand 500 states and 630 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:51,125 INFO L93 Difference]: Finished difference Result 902 states and 1139 transitions. [2023-04-01 06:39:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:51,135 INFO L225 Difference]: With dead ends: 902 [2023-04-01 06:39:51,135 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:51,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:51,139 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2188 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:51,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 1455 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.2993762993762994) internal successors, (625), 496 states have internal predecessors, (625), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 628 transitions. [2023-04-01 06:39:51,241 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 628 transitions. Word has length 83 [2023-04-01 06:39:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:51,242 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 628 transitions. [2023-04-01 06:39:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 628 transitions. [2023-04-01 06:39:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:51,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:51,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:51,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-01 06:39:51,244 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:51,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash 59839946, now seen corresponding path program 1 times [2023-04-01 06:39:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:51,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497711672] [2023-04-01 06:39:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:51,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497711672] [2023-04-01 06:39:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497711672] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:51,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:51,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896373325] [2023-04-01 06:39:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:51,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:51,458 INFO L87 Difference]: Start difference. First operand 500 states and 628 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:52,382 INFO L93 Difference]: Finished difference Result 938 states and 1189 transitions. [2023-04-01 06:39:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:52,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:52,385 INFO L225 Difference]: With dead ends: 938 [2023-04-01 06:39:52,385 INFO L226 Difference]: Without dead ends: 921 [2023-04-01 06:39:52,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:52,386 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1062 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:52,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 1651 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:39:52,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-04-01 06:39:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 500. [2023-04-01 06:39:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.2952182952182951) internal successors, (623), 496 states have internal predecessors, (623), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 626 transitions. [2023-04-01 06:39:52,506 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 626 transitions. Word has length 83 [2023-04-01 06:39:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:52,506 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 626 transitions. [2023-04-01 06:39:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 626 transitions. [2023-04-01 06:39:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:52,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:52,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:52,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-01 06:39:52,508 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:52,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1533137029, now seen corresponding path program 1 times [2023-04-01 06:39:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219574078] [2023-04-01 06:39:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:52,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:52,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219574078] [2023-04-01 06:39:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219574078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931583778] [2023-04-01 06:39:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:52,693 INFO L87 Difference]: Start difference. First operand 500 states and 626 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:53,545 INFO L93 Difference]: Finished difference Result 981 states and 1243 transitions. [2023-04-01 06:39:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:53,547 INFO L225 Difference]: With dead ends: 981 [2023-04-01 06:39:53,547 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:53,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:39:53,548 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2019 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:53,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 1541 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.291060291060291) internal successors, (621), 496 states have internal predecessors, (621), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 624 transitions. [2023-04-01 06:39:53,671 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 624 transitions. Word has length 83 [2023-04-01 06:39:53,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:53,672 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 624 transitions. [2023-04-01 06:39:53,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 624 transitions. [2023-04-01 06:39:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:39:53,673 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:53,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:53,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-01 06:39:53,673 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:53,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash 259287965, now seen corresponding path program 1 times [2023-04-01 06:39:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701828045] [2023-04-01 06:39:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:53,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701828045] [2023-04-01 06:39:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701828045] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:39:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206427505] [2023-04-01 06:39:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:39:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:39:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:39:53,839 INFO L87 Difference]: Start difference. First operand 500 states and 624 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:54,670 INFO L93 Difference]: Finished difference Result 902 states and 1133 transitions. [2023-04-01 06:39:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:39:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-01 06:39:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:54,676 INFO L225 Difference]: With dead ends: 902 [2023-04-01 06:39:54,676 INFO L226 Difference]: Without dead ends: 897 [2023-04-01 06:39:54,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:39:54,676 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1925 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:54,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 1588 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:39:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-04-01 06:39:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 500. [2023-04-01 06:39:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 481 states have (on average 1.2869022869022868) internal successors, (619), 496 states have internal predecessors, (619), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 622 transitions. [2023-04-01 06:39:54,786 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 622 transitions. Word has length 83 [2023-04-01 06:39:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:54,786 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 622 transitions. [2023-04-01 06:39:54,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 622 transitions. [2023-04-01 06:39:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:39:54,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:54,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:39:54,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-01 06:39:54,788 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:54,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 904851723, now seen corresponding path program 1 times [2023-04-01 06:39:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675879229] [2023-04-01 06:39:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:55,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675879229] [2023-04-01 06:39:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675879229] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106933330] [2023-04-01 06:39:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:55,216 INFO L87 Difference]: Start difference. First operand 500 states and 622 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:39:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:56,285 INFO L93 Difference]: Finished difference Result 1203 states and 1548 transitions. [2023-04-01 06:39:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 06:39:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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 [2023-04-01 06:39:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:56,288 INFO L225 Difference]: With dead ends: 1203 [2023-04-01 06:39:56,288 INFO L226 Difference]: Without dead ends: 1105 [2023-04-01 06:39:56,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:39:56,288 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2507 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:56,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2507 Valid, 3079 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2023-04-01 06:39:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 482. [2023-04-01 06:39:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 463 states have (on average 1.2829373650107991) internal successors, (594), 478 states have internal predecessors, (594), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 597 transitions. [2023-04-01 06:39:56,417 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 597 transitions. Word has length 85 [2023-04-01 06:39:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:56,417 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 597 transitions. [2023-04-01 06:39:56,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:39:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 597 transitions. [2023-04-01 06:39:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:39:56,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:56,418 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] [2023-04-01 06:39:56,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-01 06:39:56,418 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:56,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -576381721, now seen corresponding path program 1 times [2023-04-01 06:39:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693691884] [2023-04-01 06:39:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:56,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:56,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693691884] [2023-04-01 06:39:56,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693691884] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:56,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:56,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 06:39:56,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387287754] [2023-04-01 06:39:56,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:56,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 06:39:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 06:39:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 06:39:56,784 INFO L87 Difference]: Start difference. First operand 482 states and 597 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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) [2023-04-01 06:39:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:57,615 INFO L93 Difference]: Finished difference Result 886 states and 1068 transitions. [2023-04-01 06:39:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:39:57,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 [2023-04-01 06:39:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:57,620 INFO L225 Difference]: With dead ends: 886 [2023-04-01 06:39:57,620 INFO L226 Difference]: Without dead ends: 707 [2023-04-01 06:39:57,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:39:57,621 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1941 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 1399 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 [2023-04-01 06:39:57,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 1399 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:39:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-04-01 06:39:57,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 383. [2023-04-01 06:39:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 369 states have (on average 1.2791327913279134) internal successors, (472), 379 states have internal predecessors, (472), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:39:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 475 transitions. [2023-04-01 06:39:57,744 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 475 transitions. Word has length 85 [2023-04-01 06:39:57,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:57,744 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 475 transitions. [2023-04-01 06:39:57,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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) [2023-04-01 06:39:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 475 transitions. [2023-04-01 06:39:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:39:57,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:57,745 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] [2023-04-01 06:39:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-01 06:39:57,745 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:57,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash 984069193, now seen corresponding path program 1 times [2023-04-01 06:39:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751092034] [2023-04-01 06:39:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:39:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:39:58,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:39:58,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751092034] [2023-04-01 06:39:58,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751092034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:39:58,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:39:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:39:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369520166] [2023-04-01 06:39:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:39:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:39:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:39:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:39:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:39:58,407 INFO L87 Difference]: Start difference. First operand 383 states and 475 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:39:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:39:59,449 INFO L93 Difference]: Finished difference Result 649 states and 809 transitions. [2023-04-01 06:39:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 06:39:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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 [2023-04-01 06:39:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:39:59,451 INFO L225 Difference]: With dead ends: 649 [2023-04-01 06:39:59,451 INFO L226 Difference]: Without dead ends: 563 [2023-04-01 06:39:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:39:59,452 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1245 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:39:59,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 1506 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:39:59,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-04-01 06:39:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 371. [2023-04-01 06:39:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 358 states have (on average 1.270949720670391) internal successors, (455), 367 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) [2023-04-01 06:39:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 458 transitions. [2023-04-01 06:39:59,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 458 transitions. Word has length 85 [2023-04-01 06:39:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:39:59,600 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 458 transitions. [2023-04-01 06:39:59,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:39:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 458 transitions. [2023-04-01 06:39:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:39:59,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:39:59,600 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] [2023-04-01 06:39:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-01 06:39:59,601 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:39:59,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:39:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1744145166, now seen corresponding path program 1 times [2023-04-01 06:39:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:39:59,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070172474] [2023-04-01 06:39:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:39:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:39:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:00,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070172474] [2023-04-01 06:40:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070172474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-04-01 06:40:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171131417] [2023-04-01 06:40:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:00,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 06:40:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 06:40:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-04-01 06:40:00,881 INFO L87 Difference]: Start difference. First operand 371 states and 458 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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) [2023-04-01 06:40:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:02,983 INFO L93 Difference]: Finished difference Result 570 states and 719 transitions. [2023-04-01 06:40:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 06:40:02,984 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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 [2023-04-01 06:40:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:02,985 INFO L225 Difference]: With dead ends: 570 [2023-04-01 06:40:02,985 INFO L226 Difference]: Without dead ends: 483 [2023-04-01 06:40:02,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=377, Invalid=1975, Unknown=0, NotChecked=0, Total=2352 [2023-04-01 06:40:02,986 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 659 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:02,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 4613 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:40:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-04-01 06:40:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 385. [2023-04-01 06:40:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 372 states have (on average 1.271505376344086) internal successors, (473), 381 states have internal predecessors, (473), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 476 transitions. [2023-04-01 06:40:03,121 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 476 transitions. Word has length 85 [2023-04-01 06:40:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:03,121 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 476 transitions. [2023-04-01 06:40:03,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 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) [2023-04-01 06:40:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 476 transitions. [2023-04-01 06:40:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:40:03,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:03,122 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] [2023-04-01 06:40:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-01 06:40:03,122 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:03,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash -521817191, now seen corresponding path program 1 times [2023-04-01 06:40:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890959408] [2023-04-01 06:40:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:03,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:03,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:03,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890959408] [2023-04-01 06:40:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890959408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:40:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933046448] [2023-04-01 06:40:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:40:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:40:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:40:03,490 INFO L87 Difference]: Start difference. First operand 385 states and 476 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:40:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:04,349 INFO L93 Difference]: Finished difference Result 637 states and 793 transitions. [2023-04-01 06:40:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:40:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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 [2023-04-01 06:40:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:04,351 INFO L225 Difference]: With dead ends: 637 [2023-04-01 06:40:04,351 INFO L226 Difference]: Without dead ends: 551 [2023-04-01 06:40:04,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:40:04,352 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1502 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:04,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1166 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:40:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-04-01 06:40:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 375. [2023-04-01 06:40:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 363 states have (on average 1.2617079889807163) internal successors, (458), 371 states have internal predecessors, (458), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 461 transitions. [2023-04-01 06:40:04,506 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 461 transitions. Word has length 85 [2023-04-01 06:40:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:04,506 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 461 transitions. [2023-04-01 06:40:04,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:40:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 461 transitions. [2023-04-01 06:40:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:40:04,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:04,507 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] [2023-04-01 06:40:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-01 06:40:04,507 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:04,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1336837799, now seen corresponding path program 1 times [2023-04-01 06:40:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710775608] [2023-04-01 06:40:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:04,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:04,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710775608] [2023-04-01 06:40:04,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710775608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:04,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:40:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631479631] [2023-04-01 06:40:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:40:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:40:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:40:04,846 INFO L87 Difference]: Start difference. First operand 375 states and 461 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:40:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:05,441 INFO L93 Difference]: Finished difference Result 630 states and 792 transitions. [2023-04-01 06:40:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:40:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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 [2023-04-01 06:40:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:05,442 INFO L225 Difference]: With dead ends: 630 [2023-04-01 06:40:05,442 INFO L226 Difference]: Without dead ends: 454 [2023-04-01 06:40:05,443 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 [2023-04-01 06:40:05,443 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 771 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:05,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 2182 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:40:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-04-01 06:40:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 279. [2023-04-01 06:40:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 271 states have (on average 1.2435424354243543) internal successors, (337), 275 states have internal predecessors, (337), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 340 transitions. [2023-04-01 06:40:05,587 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 340 transitions. Word has length 85 [2023-04-01 06:40:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:05,587 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 340 transitions. [2023-04-01 06:40:05,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-04-01 06:40:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 340 transitions. [2023-04-01 06:40:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 06:40:05,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:05,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:05,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-01 06:40:05,588 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:05,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash -470204043, now seen corresponding path program 1 times [2023-04-01 06:40:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:05,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237198854] [2023-04-01 06:40:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:05,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:06,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237198854] [2023-04-01 06:40:06,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237198854] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:06,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:06,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-01 06:40:06,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979308592] [2023-04-01 06:40:06,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 06:40:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 06:40:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-04-01 06:40:06,210 INFO L87 Difference]: Start difference. First operand 279 states and 340 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2023-04-01 06:40:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:07,873 INFO L93 Difference]: Finished difference Result 871 states and 1119 transitions. [2023-04-01 06:40:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 06:40:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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 86 [2023-04-01 06:40:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:07,875 INFO L225 Difference]: With dead ends: 871 [2023-04-01 06:40:07,875 INFO L226 Difference]: Without dead ends: 779 [2023-04-01 06:40:07,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 06:40:07,876 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1639 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:07,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 2344 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:40:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-04-01 06:40:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 263. [2023-04-01 06:40:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 255 states have (on average 1.227450980392157) internal successors, (313), 259 states have internal predecessors, (313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 316 transitions. [2023-04-01 06:40:08,013 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 316 transitions. Word has length 86 [2023-04-01 06:40:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:08,013 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 316 transitions. [2023-04-01 06:40:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2023-04-01 06:40:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 316 transitions. [2023-04-01 06:40:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 06:40:08,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:08,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-01 06:40:08,014 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:08,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -612757434, now seen corresponding path program 1 times [2023-04-01 06:40:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:08,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772697052] [2023-04-01 06:40:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:08,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:08,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772697052] [2023-04-01 06:40:08,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772697052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:08,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:08,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:40:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999428113] [2023-04-01 06:40:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:40:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:40:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:40:08,175 INFO L87 Difference]: Start difference. First operand 263 states and 316 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:08,698 INFO L93 Difference]: Finished difference Result 400 states and 486 transitions. [2023-04-01 06:40:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 06:40:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-01 06:40:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:08,699 INFO L225 Difference]: With dead ends: 400 [2023-04-01 06:40:08,699 INFO L226 Difference]: Without dead ends: 393 [2023-04-01 06:40:08,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:40:08,699 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 734 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:08,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 553 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:40:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-04-01 06:40:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 263. [2023-04-01 06:40:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 255 states have (on average 1.223529411764706) internal successors, (312), 259 states have internal predecessors, (312), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 315 transitions. [2023-04-01 06:40:08,838 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 315 transitions. Word has length 86 [2023-04-01 06:40:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:08,838 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 315 transitions. [2023-04-01 06:40:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 315 transitions. [2023-04-01 06:40:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 06:40:08,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:08,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-01 06:40:08,839 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:08,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash -557233558, now seen corresponding path program 1 times [2023-04-01 06:40:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309719738] [2023-04-01 06:40:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:09,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309719738] [2023-04-01 06:40:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309719738] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:09,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:09,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-01 06:40:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989343661] [2023-04-01 06:40:09,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 06:40:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 06:40:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-04-01 06:40:09,511 INFO L87 Difference]: Start difference. First operand 263 states and 315 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2023-04-01 06:40:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:10,734 INFO L93 Difference]: Finished difference Result 574 states and 720 transitions. [2023-04-01 06:40:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 06:40:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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 86 [2023-04-01 06:40:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:10,735 INFO L225 Difference]: With dead ends: 574 [2023-04-01 06:40:10,735 INFO L226 Difference]: Without dead ends: 466 [2023-04-01 06:40:10,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2023-04-01 06:40:10,736 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 578 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:10,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 2638 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:40:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-04-01 06:40:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 269. [2023-04-01 06:40:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.2222222222222223) internal successors, (319), 265 states have internal predecessors, (319), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 322 transitions. [2023-04-01 06:40:10,882 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 322 transitions. Word has length 86 [2023-04-01 06:40:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:10,882 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 322 transitions. [2023-04-01 06:40:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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) [2023-04-01 06:40:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 322 transitions. [2023-04-01 06:40:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 06:40:10,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:10,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:10,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-01 06:40:10,883 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:10,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1450332726, now seen corresponding path program 1 times [2023-04-01 06:40:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574537445] [2023-04-01 06:40:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:11,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574537445] [2023-04-01 06:40:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574537445] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:40:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128642107] [2023-04-01 06:40:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:11,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:40:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:40:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:40:11,053 INFO L87 Difference]: Start difference. First operand 269 states and 322 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:11,893 INFO L93 Difference]: Finished difference Result 683 states and 865 transitions. [2023-04-01 06:40:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:40:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-01 06:40:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:11,894 INFO L225 Difference]: With dead ends: 683 [2023-04-01 06:40:11,895 INFO L226 Difference]: Without dead ends: 573 [2023-04-01 06:40:11,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:40:11,895 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1018 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:11,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 790 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:40:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-04-01 06:40:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 269. [2023-04-01 06:40:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.21455938697318) internal successors, (317), 265 states have internal predecessors, (317), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 320 transitions. [2023-04-01 06:40:12,046 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 320 transitions. Word has length 86 [2023-04-01 06:40:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:12,046 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 320 transitions. [2023-04-01 06:40:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 320 transitions. [2023-04-01 06:40:12,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 06:40:12,049 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:12,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:12,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-01 06:40:12,050 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:12,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash -50595155, now seen corresponding path program 1 times [2023-04-01 06:40:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203425697] [2023-04-01 06:40:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:12,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203425697] [2023-04-01 06:40:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203425697] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:12,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:12,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:40:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281671264] [2023-04-01 06:40:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:12,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:40:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:40:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:40:12,238 INFO L87 Difference]: Start difference. First operand 269 states and 320 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:12,801 INFO L93 Difference]: Finished difference Result 406 states and 489 transitions. [2023-04-01 06:40:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:40:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-01 06:40:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:12,802 INFO L225 Difference]: With dead ends: 406 [2023-04-01 06:40:12,802 INFO L226 Difference]: Without dead ends: 399 [2023-04-01 06:40:12,802 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 [2023-04-01 06:40:12,802 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 922 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 631 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:40:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-04-01 06:40:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 269. [2023-04-01 06:40:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.210727969348659) internal successors, (316), 265 states have internal predecessors, (316), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 319 transitions. [2023-04-01 06:40:12,950 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 319 transitions. Word has length 86 [2023-04-01 06:40:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:12,951 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 319 transitions. [2023-04-01 06:40:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 319 transitions. [2023-04-01 06:40:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-01 06:40:12,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:12,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:40:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-01 06:40:12,951 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:12,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 280235591, now seen corresponding path program 1 times [2023-04-01 06:40:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:12,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038692809] [2023-04-01 06:40:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:12,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:13,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:13,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038692809] [2023-04-01 06:40:13,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038692809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:13,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:13,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:40:13,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478552720] [2023-04-01 06:40:13,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:13,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:40:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:40:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:40:13,288 INFO L87 Difference]: Start difference. First operand 269 states and 319 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:14,269 INFO L93 Difference]: Finished difference Result 763 states and 954 transitions. [2023-04-01 06:40:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 06:40:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-01 06:40:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:14,271 INFO L225 Difference]: With dead ends: 763 [2023-04-01 06:40:14,271 INFO L226 Difference]: Without dead ends: 643 [2023-04-01 06:40:14,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:40:14,271 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 815 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:14,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2360 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:40:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-04-01 06:40:14,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 223. [2023-04-01 06:40:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 217 states have (on average 1.207373271889401) internal successors, (262), 219 states have internal predecessors, (262), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 265 transitions. [2023-04-01 06:40:14,423 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 265 transitions. Word has length 87 [2023-04-01 06:40:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:14,423 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 265 transitions. [2023-04-01 06:40:14,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 265 transitions. [2023-04-01 06:40:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 06:40:14,423 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:14,424 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] [2023-04-01 06:40:14,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-01 06:40:14,424 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:14,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1718432684, now seen corresponding path program 1 times [2023-04-01 06:40:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972232734] [2023-04-01 06:40:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:40:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:40:14,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:40:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972232734] [2023-04-01 06:40:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972232734] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:40:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:40:14,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:40:14,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762812119] [2023-04-01 06:40:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:40:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:40:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:40:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:40:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:40:14,770 INFO L87 Difference]: Start difference. First operand 223 states and 265 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:40:15,798 INFO L93 Difference]: Finished difference Result 517 states and 649 transitions. [2023-04-01 06:40:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 06:40:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-01 06:40:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:40:15,799 INFO L225 Difference]: With dead ends: 517 [2023-04-01 06:40:15,800 INFO L226 Difference]: Without dead ends: 511 [2023-04-01 06:40:15,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:40:15,800 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 827 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:40:15,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1294 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:40:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-04-01 06:40:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 217. [2023-04-01 06:40:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.2028301886792452) internal successors, (255), 213 states have internal predecessors, (255), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 258 transitions. [2023-04-01 06:40:15,944 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 258 transitions. Word has length 88 [2023-04-01 06:40:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:40:15,944 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 258 transitions. [2023-04-01 06:40:15,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:40:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 258 transitions. [2023-04-01 06:40:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 06:40:15,945 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:40:15,945 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] [2023-04-01 06:40:15,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-01 06:40:15,945 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2023-04-01 06:40:15,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:40:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 301982116, now seen corresponding path program 1 times [2023-04-01 06:40:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:40:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609181620] [2023-04-01 06:40:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:40:15,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:40:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat