/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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:44:29,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:44:29,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:44:29,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:44:29,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:44:29,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:44:29,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:44:29,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:44:29,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:44:29,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:44:29,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:44:29,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:44:29,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:44:29,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:44:29,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:44:29,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:44:29,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:44:29,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:44:29,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:44:29,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:44:29,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:44:29,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:44:29,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:44:29,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:44:29,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:44:29,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:44:29,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:44:29,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:44:29,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:44:29,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:44:29,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:44:29,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:44:29,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:44:29,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:44:29,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:44:29,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:44:29,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:44:29,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:44:29,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:44:29,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:44:29,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:44:29,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:44:29,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:44:29,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:44:29,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:44:29,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:44:29,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:44:29,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:44:29,324 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:44:29,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:44:29,324 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:44:29,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:44:29,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:44:29,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:44:29,326 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:44:29,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:44:29,326 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:44:29,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:44:29,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:44:29,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:44:29,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:44:29,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:44:29,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:44:29,328 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:44:29,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:44:29,329 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:44:29,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:44:29,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:44:29,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:44:29,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:29,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:44:29,330 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:44:29,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:44:29,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:44:29,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:44:29,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:44:29,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:44:29,558 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:44:29,558 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:44:29,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:44:30,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:44:31,229 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:44:31,230 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:44:31,276 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9afd9696b/57bab2fb59854a29bd6fd7cf2a37b7eb/FLAG0c013511f [2023-04-03 02:44:31,291 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9afd9696b/57bab2fb59854a29bd6fd7cf2a37b7eb [2023-04-03 02:44:31,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:44:31,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:44:31,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:31,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:44:31,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:44:31,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:31" (1/1) ... [2023-04-03 02:44:31,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20845658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:31, skipping insertion in model container [2023-04-03 02:44:31,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:31" (1/1) ... [2023-04-03 02:44:31,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:44:31,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:44:32,056 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2023-04-03 02:44:32,106 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2023-04-03 02:44:32,262 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2023-04-03 02:44:32,291 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2023-04-03 02:44:32,308 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2023-04-03 02:44:32,351 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2023-04-03 02:44:32,371 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2023-04-03 02:44:32,391 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2023-04-03 02:44:32,468 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2023-04-03 02:44:32,474 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2023-04-03 02:44:32,488 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2023-04-03 02:44:32,506 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2023-04-03 02:44:32,545 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2023-04-03 02:44:32,599 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2023-04-03 02:44:32,641 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2023-04-03 02:44:32,681 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2023-04-03 02:44:32,723 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2023-04-03 02:44:32,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:32,914 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:44:33,000 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26799,26812] [2023-04-03 02:44:33,009 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33129,33142] [2023-04-03 02:44:33,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57661,57674] [2023-04-03 02:44:33,101 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65696,65709] [2023-04-03 02:44:33,110 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71499,71512] [2023-04-03 02:44:33,127 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82182,82195] [2023-04-03 02:44:33,138 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90107,90120] [2023-04-03 02:44:33,148 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97295,97308] [2023-04-03 02:44:33,197 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131822,131835] [2023-04-03 02:44:33,202 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[134930,134943] [2023-04-03 02:44:33,223 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[142923,142936] [2023-04-03 02:44:33,231 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[148707,148720] [2023-04-03 02:44:33,263 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[171333,171346] [2023-04-03 02:44:33,299 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199069,199082] [2023-04-03 02:44:33,333 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[225502,225515] [2023-04-03 02:44:33,369 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[252663,252676] [2023-04-03 02:44:33,409 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[283670,283683] [2023-04-03 02:44:33,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:33,597 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:44:33,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33 WrapperNode [2023-04-03 02:44:33,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:33,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:44:33,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:44:33,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:44:33,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,962 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:33,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:34,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:44:34,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:44:34,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:44:34,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:44:34,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (1/1) ... [2023-04-03 02:44:34,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:34,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:44:34,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 02:44:34,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 02:44:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:44:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:44:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:44:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:44:34,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:44:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:44:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:44:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:44:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:44:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:44:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:44:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:44:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:44:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:44:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:44:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:44:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:44:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:44:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:44:34,565 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:44:34,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:44:40,201 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:44:41,421 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:44:41,422 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:44:41,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:41 BoogieIcfgContainer [2023-04-03 02:44:41,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:44:41,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:44:41,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:44:41,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:44:41,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:44:31" (1/3) ... [2023-04-03 02:44:41,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d61f6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:41, skipping insertion in model container [2023-04-03 02:44:41,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:33" (2/3) ... [2023-04-03 02:44:41,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d61f6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:41, skipping insertion in model container [2023-04-03 02:44:41,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:41" (3/3) ... [2023-04-03 02:44:41,435 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:44:41,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:44:41,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-04-03 02:44:41,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:44:41,543 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;@28e82ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:44:41,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-04-03 02:44:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 3368 states, 3346 states have (on average 1.8305439330543933) internal successors, (6125), 3363 states have internal predecessors, (6125), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:44:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 02:44:41,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:41,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:41,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:41,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1317996213, now seen corresponding path program 1 times [2023-04-03 02:44:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749745319] [2023-04-03 02:44:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:42,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:42,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749745319] [2023-04-03 02:44:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749745319] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:42,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:42,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242375887] [2023-04-03 02:44:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:42,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:42,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:42,467 INFO L87 Difference]: Start difference. First operand has 3368 states, 3346 states have (on average 1.8305439330543933) internal successors, (6125), 3363 states have internal predecessors, (6125), 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 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:45,335 INFO L93 Difference]: Finished difference Result 5649 states and 10102 transitions. [2023-04-03 02:44:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 02:44:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:45,361 INFO L225 Difference]: With dead ends: 5649 [2023-04-03 02:44:45,361 INFO L226 Difference]: Without dead ends: 3315 [2023-04-03 02:44:45,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:45,376 INFO L413 NwaCegarLoop]: 2578 mSDtfsCounter, 16169 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16169 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:45,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16169 Valid, 3222 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 02:44:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2023-04-03 02:44:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3295. [2023-04-03 02:44:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3275 states have (on average 1.3193893129770993) internal successors, (4321), 3291 states have internal predecessors, (4321), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4324 transitions. [2023-04-03 02:44:45,549 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4324 transitions. Word has length 67 [2023-04-03 02:44:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:45,550 INFO L495 AbstractCegarLoop]: Abstraction has 3295 states and 4324 transitions. [2023-04-03 02:44:45,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4324 transitions. [2023-04-03 02:44:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 02:44:45,558 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:45,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:44:45,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:45,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2127154264, now seen corresponding path program 1 times [2023-04-03 02:44:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:45,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312815655] [2023-04-03 02:44:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:45,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312815655] [2023-04-03 02:44:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312815655] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310955561] [2023-04-03 02:44:45,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:45,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:45,937 INFO L87 Difference]: Start difference. First operand 3295 states and 4324 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:48,351 INFO L93 Difference]: Finished difference Result 6336 states and 8318 transitions. [2023-04-03 02:44:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 02:44:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:48,368 INFO L225 Difference]: With dead ends: 6336 [2023-04-03 02:44:48,368 INFO L226 Difference]: Without dead ends: 4336 [2023-04-03 02:44:48,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:48,375 INFO L413 NwaCegarLoop]: 1263 mSDtfsCounter, 11133 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11133 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:48,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11133 Valid, 1888 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-03 02:44:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2023-04-03 02:44:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4312. [2023-04-03 02:44:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4292 states have (on average 1.3145386766076421) internal successors, (5642), 4308 states have internal predecessors, (5642), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 5645 transitions. [2023-04-03 02:44:48,552 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 5645 transitions. Word has length 67 [2023-04-03 02:44:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 5645 transitions. [2023-04-03 02:44:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 5645 transitions. [2023-04-03 02:44:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:44:48,560 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:48,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:44:48,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:48,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -857136788, now seen corresponding path program 1 times [2023-04-03 02:44:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722584681] [2023-04-03 02:44:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:48,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722584681] [2023-04-03 02:44:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722584681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:48,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:48,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745628374] [2023-04-03 02:44:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:48,831 INFO L87 Difference]: Start difference. First operand 4312 states and 5645 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:50,790 INFO L93 Difference]: Finished difference Result 8654 states and 11305 transitions. [2023-04-03 02:44:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 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 68 [2023-04-03 02:44:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:50,812 INFO L225 Difference]: With dead ends: 8654 [2023-04-03 02:44:50,812 INFO L226 Difference]: Without dead ends: 5871 [2023-04-03 02:44:50,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:50,821 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 9682 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9682 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:50,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9682 Valid, 1734 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 02:44:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2023-04-03 02:44:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5844. [2023-04-03 02:44:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 5824 states have (on average 1.3123282967032968) internal successors, (7643), 5840 states have internal predecessors, (7643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 7646 transitions. [2023-04-03 02:44:51,197 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 7646 transitions. Word has length 68 [2023-04-03 02:44:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:51,200 INFO L495 AbstractCegarLoop]: Abstraction has 5844 states and 7646 transitions. [2023-04-03 02:44:51,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 7646 transitions. [2023-04-03 02:44:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:44:51,209 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:51,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:44:51,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:51,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash 356091382, now seen corresponding path program 1 times [2023-04-03 02:44:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:51,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369424863] [2023-04-03 02:44:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:51,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:51,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369424863] [2023-04-03 02:44:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369424863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:51,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:51,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:44:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756203753] [2023-04-03 02:44:51,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:44:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:44:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:44:51,833 INFO L87 Difference]: Start difference. First operand 5844 states and 7646 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:54,933 INFO L93 Difference]: Finished difference Result 7884 states and 10461 transitions. [2023-04-03 02:44:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 02:44:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:44:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:54,962 INFO L225 Difference]: With dead ends: 7884 [2023-04-03 02:44:54,962 INFO L226 Difference]: Without dead ends: 7349 [2023-04-03 02:44:54,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:44:54,968 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 13576 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 5019 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13576 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 5047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:54,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13576 Valid, 4393 Invalid, 5047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5019 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 02:44:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2023-04-03 02:44:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 5783. [2023-04-03 02:44:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5763 states have (on average 1.3114697206316155) internal successors, (7558), 5779 states have internal predecessors, (7558), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 7561 transitions. [2023-04-03 02:44:55,358 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 7561 transitions. Word has length 69 [2023-04-03 02:44:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:55,358 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 7561 transitions. [2023-04-03 02:44:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 7561 transitions. [2023-04-03 02:44:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:44:55,369 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:55,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:44:55,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:55,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -889633197, now seen corresponding path program 1 times [2023-04-03 02:44:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331182939] [2023-04-03 02:44:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:55,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331182939] [2023-04-03 02:44:55,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331182939] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:55,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:55,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:44:55,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199349525] [2023-04-03 02:44:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:44:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:44:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:44:55,638 INFO L87 Difference]: Start difference. First operand 5783 states and 7561 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:57,308 INFO L93 Difference]: Finished difference Result 11027 states and 14488 transitions. [2023-04-03 02:44:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:44:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:44:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:57,339 INFO L225 Difference]: With dead ends: 11027 [2023-04-03 02:44:57,339 INFO L226 Difference]: Without dead ends: 7215 [2023-04-03 02:44:57,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:44:57,350 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 8120 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8120 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:57,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8120 Valid, 1490 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:44:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7215 states. [2023-04-03 02:44:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 7180. [2023-04-03 02:44:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7180 states, 7160 states have (on average 1.3191340782122905) internal successors, (9445), 7176 states have internal predecessors, (9445), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 9448 transitions. [2023-04-03 02:44:57,869 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 9448 transitions. Word has length 69 [2023-04-03 02:44:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:57,869 INFO L495 AbstractCegarLoop]: Abstraction has 7180 states and 9448 transitions. [2023-04-03 02:44:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 9448 transitions. [2023-04-03 02:44:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:44:57,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:57,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:44:57,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:44:57,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 827946800, now seen corresponding path program 1 times [2023-04-03 02:44:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460012759] [2023-04-03 02:44:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:58,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460012759] [2023-04-03 02:44:58,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460012759] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:58,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:58,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:44:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541365855] [2023-04-03 02:44:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:58,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:44:58,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:44:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:44:58,445 INFO L87 Difference]: Start difference. First operand 7180 states and 9448 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:02,519 INFO L93 Difference]: Finished difference Result 12422 states and 16552 transitions. [2023-04-03 02:45:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:45:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:45:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:02,545 INFO L225 Difference]: With dead ends: 12422 [2023-04-03 02:45:02,546 INFO L226 Difference]: Without dead ends: 11495 [2023-04-03 02:45:02,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:45:02,552 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 13349 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 6402 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13349 SdHoareTripleChecker+Valid, 5153 SdHoareTripleChecker+Invalid, 6544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 6402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:02,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13349 Valid, 5153 Invalid, 6544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 6402 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-03 02:45:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11495 states. [2023-04-03 02:45:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11495 to 7139. [2023-04-03 02:45:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7139 states, 7119 states have (on average 1.3188650091304959) internal successors, (9389), 7135 states have internal predecessors, (9389), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 9392 transitions. [2023-04-03 02:45:03,198 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 9392 transitions. Word has length 69 [2023-04-03 02:45:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:03,199 INFO L495 AbstractCegarLoop]: Abstraction has 7139 states and 9392 transitions. [2023-04-03 02:45:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 9392 transitions. [2023-04-03 02:45:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:45:03,206 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:03,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:45:03,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:03,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:03,207 INFO L85 PathProgramCache]: Analyzing trace with hash -339083987, now seen corresponding path program 1 times [2023-04-03 02:45:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:03,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712873012] [2023-04-03 02:45:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:04,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:04,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712873012] [2023-04-03 02:45:04,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712873012] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:04,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:45:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121400834] [2023-04-03 02:45:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:45:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:45:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:45:04,142 INFO L87 Difference]: Start difference. First operand 7139 states and 9392 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:07,404 INFO L93 Difference]: Finished difference Result 13578 states and 18483 transitions. [2023-04-03 02:45:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:45:07,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 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 70 [2023-04-03 02:45:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:07,430 INFO L225 Difference]: With dead ends: 13578 [2023-04-03 02:45:07,430 INFO L226 Difference]: Without dead ends: 12652 [2023-04-03 02:45:07,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:45:07,437 INFO L413 NwaCegarLoop]: 2519 mSDtfsCounter, 13464 mSDsluCounter, 12052 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13464 SdHoareTripleChecker+Valid, 14571 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:07,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13464 Valid, 14571 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:45:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12652 states. [2023-04-03 02:45:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12652 to 7095. [2023-04-03 02:45:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7076 states have (on average 1.3181175805539853) internal successors, (9327), 7091 states have internal predecessors, (9327), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9330 transitions. [2023-04-03 02:45:08,254 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9330 transitions. Word has length 70 [2023-04-03 02:45:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:08,255 INFO L495 AbstractCegarLoop]: Abstraction has 7095 states and 9330 transitions. [2023-04-03 02:45:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9330 transitions. [2023-04-03 02:45:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:45:08,266 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:08,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:45:08,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:08,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash 984601986, now seen corresponding path program 1 times [2023-04-03 02:45:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16493174] [2023-04-03 02:45:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:08,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:08,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16493174] [2023-04-03 02:45:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16493174] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:08,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246778892] [2023-04-03 02:45:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:08,781 INFO L87 Difference]: Start difference. First operand 7095 states and 9330 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:12,683 INFO L93 Difference]: Finished difference Result 9769 states and 12871 transitions. [2023-04-03 02:45:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:45:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 02:45:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:12,701 INFO L225 Difference]: With dead ends: 9769 [2023-04-03 02:45:12,702 INFO L226 Difference]: Without dead ends: 9761 [2023-04-03 02:45:12,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:45:12,705 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 11829 mSDsluCounter, 3664 mSDsCounter, 0 mSdLazyCounter, 5543 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11829 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 5618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:12,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11829 Valid, 4850 Invalid, 5618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 02:45:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2023-04-03 02:45:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7095. [2023-04-03 02:45:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7076 states have (on average 1.317976257772753) internal successors, (9326), 7091 states have internal predecessors, (9326), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9329 transitions. [2023-04-03 02:45:13,529 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9329 transitions. Word has length 70 [2023-04-03 02:45:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:13,529 INFO L495 AbstractCegarLoop]: Abstraction has 7095 states and 9329 transitions. [2023-04-03 02:45:13,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:13,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9329 transitions. [2023-04-03 02:45:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:45:13,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:13,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:45:13,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:13,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash -859513783, now seen corresponding path program 1 times [2023-04-03 02:45:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:13,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198305093] [2023-04-03 02:45:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:13,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:14,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198305093] [2023-04-03 02:45:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198305093] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:14,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:14,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943415265] [2023-04-03 02:45:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:14,027 INFO L87 Difference]: Start difference. First operand 7095 states and 9329 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:17,182 INFO L93 Difference]: Finished difference Result 8263 states and 10864 transitions. [2023-04-03 02:45:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:45:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 02:45:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:17,195 INFO L225 Difference]: With dead ends: 8263 [2023-04-03 02:45:17,195 INFO L226 Difference]: Without dead ends: 8258 [2023-04-03 02:45:17,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:45:17,198 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 11277 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11277 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:17,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11277 Valid, 4654 Invalid, 4968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-03 02:45:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2023-04-03 02:45:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 7095. [2023-04-03 02:45:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7076 states have (on average 1.3178349349915206) internal successors, (9325), 7091 states have internal predecessors, (9325), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9328 transitions. [2023-04-03 02:45:17,986 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9328 transitions. Word has length 70 [2023-04-03 02:45:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:17,987 INFO L495 AbstractCegarLoop]: Abstraction has 7095 states and 9328 transitions. [2023-04-03 02:45:17,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9328 transitions. [2023-04-03 02:45:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:45:17,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:17,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:45:17,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:17,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash -866612108, now seen corresponding path program 1 times [2023-04-03 02:45:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021752291] [2023-04-03 02:45:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:18,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021752291] [2023-04-03 02:45:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021752291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:45:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395756157] [2023-04-03 02:45:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:18,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:45:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:45:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:45:18,764 INFO L87 Difference]: Start difference. First operand 7095 states and 9328 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:22,616 INFO L93 Difference]: Finished difference Result 13385 states and 18195 transitions. [2023-04-03 02:45:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:45:22,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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 70 [2023-04-03 02:45:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:22,634 INFO L225 Difference]: With dead ends: 13385 [2023-04-03 02:45:22,634 INFO L226 Difference]: Without dead ends: 12455 [2023-04-03 02:45:22,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:45:22,640 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 9519 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9519 SdHoareTripleChecker+Valid, 10129 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:22,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9519 Valid, 10129 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:45:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12455 states. [2023-04-03 02:45:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12455 to 7047. [2023-04-03 02:45:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 7029 states have (on average 1.3178261488120644) internal successors, (9263), 7043 states have internal predecessors, (9263), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 9266 transitions. [2023-04-03 02:45:23,682 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 9266 transitions. Word has length 70 [2023-04-03 02:45:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:23,682 INFO L495 AbstractCegarLoop]: Abstraction has 7047 states and 9266 transitions. [2023-04-03 02:45:23,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 9266 transitions. [2023-04-03 02:45:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:23,690 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:23,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:45:23,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:23,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1244666387, now seen corresponding path program 1 times [2023-04-03 02:45:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70773326] [2023-04-03 02:45:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:24,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70773326] [2023-04-03 02:45:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70773326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:24,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:24,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:45:24,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322766617] [2023-04-03 02:45:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:24,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:45:24,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:45:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:45:24,496 INFO L87 Difference]: Start difference. First operand 7047 states and 9266 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:30,133 INFO L93 Difference]: Finished difference Result 13671 states and 18468 transitions. [2023-04-03 02:45:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:45:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:45:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:30,148 INFO L225 Difference]: With dead ends: 13671 [2023-04-03 02:45:30,148 INFO L226 Difference]: Without dead ends: 13660 [2023-04-03 02:45:30,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:45:30,150 INFO L413 NwaCegarLoop]: 2331 mSDtfsCounter, 14400 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14400 SdHoareTripleChecker+Valid, 14947 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:30,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14400 Valid, 14947 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 02:45:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13660 states. [2023-04-03 02:45:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13660 to 7041. [2023-04-03 02:45:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 7023 states have (on average 1.31795528976221) internal successors, (9256), 7037 states have internal predecessors, (9256), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 9259 transitions. [2023-04-03 02:45:31,313 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 9259 transitions. Word has length 71 [2023-04-03 02:45:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 7041 states and 9259 transitions. [2023-04-03 02:45:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 9259 transitions. [2023-04-03 02:45:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:31,321 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:31,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:31,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:45:31,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:31,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash 832092145, now seen corresponding path program 1 times [2023-04-03 02:45:31,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074805754] [2023-04-03 02:45:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:31,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:31,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074805754] [2023-04-03 02:45:31,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074805754] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:31,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:31,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:31,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302021455] [2023-04-03 02:45:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:31,824 INFO L87 Difference]: Start difference. First operand 7041 states and 9259 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:37,041 INFO L93 Difference]: Finished difference Result 11531 states and 15420 transitions. [2023-04-03 02:45:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:45:37,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 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 71 [2023-04-03 02:45:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:37,054 INFO L225 Difference]: With dead ends: 11531 [2023-04-03 02:45:37,054 INFO L226 Difference]: Without dead ends: 10634 [2023-04-03 02:45:37,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:45:37,057 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 11811 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 5665 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11811 SdHoareTripleChecker+Valid, 4927 SdHoareTripleChecker+Invalid, 5740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:37,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11811 Valid, 4927 Invalid, 5740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5665 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 02:45:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10634 states. [2023-04-03 02:45:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10634 to 7041. [2023-04-03 02:45:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 7023 states have (on average 1.3178129004698846) internal successors, (9255), 7037 states have internal predecessors, (9255), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 9258 transitions. [2023-04-03 02:45:38,290 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 9258 transitions. Word has length 71 [2023-04-03 02:45:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 7041 states and 9258 transitions. [2023-04-03 02:45:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 9258 transitions. [2023-04-03 02:45:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:38,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:38,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:45:38,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:38,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash -149685326, now seen corresponding path program 1 times [2023-04-03 02:45:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856496660] [2023-04-03 02:45:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:38,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:38,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856496660] [2023-04-03 02:45:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856496660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:45:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705617953] [2023-04-03 02:45:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:38,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:45:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:45:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:45:38,745 INFO L87 Difference]: Start difference. First operand 7041 states and 9258 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:45,891 INFO L93 Difference]: Finished difference Result 15106 states and 20307 transitions. [2023-04-03 02:45:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:45:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 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 71 [2023-04-03 02:45:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:45,912 INFO L225 Difference]: With dead ends: 15106 [2023-04-03 02:45:45,912 INFO L226 Difference]: Without dead ends: 14167 [2023-04-03 02:45:45,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:45:45,919 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 10809 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 6474 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10809 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 6628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 6474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:45,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10809 Valid, 5332 Invalid, 6628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 6474 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-03 02:45:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14167 states. [2023-04-03 02:45:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14167 to 7041. [2023-04-03 02:45:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 7023 states have (on average 1.3176705111775595) internal successors, (9254), 7037 states have internal predecessors, (9254), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 9257 transitions. [2023-04-03 02:45:47,230 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 9257 transitions. Word has length 71 [2023-04-03 02:45:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:47,230 INFO L495 AbstractCegarLoop]: Abstraction has 7041 states and 9257 transitions. [2023-04-03 02:45:47,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 9257 transitions. [2023-04-03 02:45:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:47,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:45:47,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:47,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -294376735, now seen corresponding path program 1 times [2023-04-03 02:45:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:47,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450143853] [2023-04-03 02:45:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:47,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450143853] [2023-04-03 02:45:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450143853] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:47,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:47,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:45:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789029954] [2023-04-03 02:45:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:45:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:45:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:45:47,620 INFO L87 Difference]: Start difference. First operand 7041 states and 9257 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:51,993 INFO L93 Difference]: Finished difference Result 10833 states and 14519 transitions. [2023-04-03 02:45:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 02:45:51,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 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 71 [2023-04-03 02:45:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:52,004 INFO L225 Difference]: With dead ends: 10833 [2023-04-03 02:45:52,005 INFO L226 Difference]: Without dead ends: 9672 [2023-04-03 02:45:52,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-03 02:45:52,008 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 11676 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 3944 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11676 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:52,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11676 Valid, 3562 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3944 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 02:45:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9672 states. [2023-04-03 02:45:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9672 to 7041. [2023-04-03 02:45:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7041 states, 7023 states have (on average 1.3175281218852342) internal successors, (9253), 7037 states have internal predecessors, (9253), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7041 states to 7041 states and 9256 transitions. [2023-04-03 02:45:53,334 INFO L78 Accepts]: Start accepts. Automaton has 7041 states and 9256 transitions. Word has length 71 [2023-04-03 02:45:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:53,335 INFO L495 AbstractCegarLoop]: Abstraction has 7041 states and 9256 transitions. [2023-04-03 02:45:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7041 states and 9256 transitions. [2023-04-03 02:45:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:45:53,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:53,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:53,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:45:53,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:45:53,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1490309466, now seen corresponding path program 1 times [2023-04-03 02:45:53,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:53,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193262261] [2023-04-03 02:45:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:54,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193262261] [2023-04-03 02:45:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193262261] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:54,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:54,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:45:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373311174] [2023-04-03 02:45:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:45:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:45:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:45:54,103 INFO L87 Difference]: Start difference. First operand 7041 states and 9256 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:59,813 INFO L93 Difference]: Finished difference Result 12628 states and 17107 transitions. [2023-04-03 02:45:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:45:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:45:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:59,827 INFO L225 Difference]: With dead ends: 12628 [2023-04-03 02:45:59,827 INFO L226 Difference]: Without dead ends: 12620 [2023-04-03 02:45:59,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:45:59,829 INFO L413 NwaCegarLoop]: 2499 mSDtfsCounter, 11354 mSDsluCounter, 11907 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11354 SdHoareTripleChecker+Valid, 14406 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11354 Valid, 14406 Invalid, 2427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:45:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2023-04-03 02:46:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 7033. [2023-04-03 02:46:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7033 states, 7016 states have (on average 1.3175598631698975) internal successors, (9244), 7029 states have internal predecessors, (9244), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7033 states to 7033 states and 9247 transitions. [2023-04-03 02:46:01,217 INFO L78 Accepts]: Start accepts. Automaton has 7033 states and 9247 transitions. Word has length 71 [2023-04-03 02:46:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:01,217 INFO L495 AbstractCegarLoop]: Abstraction has 7033 states and 9247 transitions. [2023-04-03 02:46:01,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7033 states and 9247 transitions. [2023-04-03 02:46:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:46:01,223 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:01,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:46:01,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:01,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2142888339, now seen corresponding path program 1 times [2023-04-03 02:46:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015823459] [2023-04-03 02:46:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:01,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015823459] [2023-04-03 02:46:01,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015823459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:01,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:01,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977266002] [2023-04-03 02:46:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:01,330 INFO L87 Difference]: Start difference. First operand 7033 states and 9247 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:03,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:03,036 INFO L93 Difference]: Finished difference Result 10045 states and 13335 transitions. [2023-04-03 02:46:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:03,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:46:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:03,043 INFO L225 Difference]: With dead ends: 10045 [2023-04-03 02:46:03,043 INFO L226 Difference]: Without dead ends: 6166 [2023-04-03 02:46:03,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:03,047 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 1651 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:03,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 2224 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6166 states. [2023-04-03 02:46:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6166 to 6148. [2023-04-03 02:46:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6135 states have (on average 1.3224123879380603) internal successors, (8113), 6144 states have internal predecessors, (8113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 8116 transitions. [2023-04-03 02:46:04,548 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 8116 transitions. Word has length 71 [2023-04-03 02:46:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:04,548 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 8116 transitions. [2023-04-03 02:46:04,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 8116 transitions. [2023-04-03 02:46:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:04,554 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:04,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:46:04,554 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:04,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1624691122, now seen corresponding path program 1 times [2023-04-03 02:46:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874846036] [2023-04-03 02:46:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:04,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:04,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874846036] [2023-04-03 02:46:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874846036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:04,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105657359] [2023-04-03 02:46:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:04,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:04,664 INFO L87 Difference]: Start difference. First operand 6148 states and 8116 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:06,477 INFO L93 Difference]: Finished difference Result 9505 states and 12655 transitions. [2023-04-03 02:46:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:46:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:06,484 INFO L225 Difference]: With dead ends: 9505 [2023-04-03 02:46:06,484 INFO L226 Difference]: Without dead ends: 5677 [2023-04-03 02:46:06,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:06,488 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1315 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:06,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1668 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2023-04-03 02:46:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5669. [2023-04-03 02:46:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5669 states, 5659 states have (on average 1.3281498497967839) internal successors, (7516), 5665 states have internal predecessors, (7516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 7519 transitions. [2023-04-03 02:46:08,433 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 7519 transitions. Word has length 72 [2023-04-03 02:46:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:08,433 INFO L495 AbstractCegarLoop]: Abstraction has 5669 states and 7519 transitions. [2023-04-03 02:46:08,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 7519 transitions. [2023-04-03 02:46:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:08,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:08,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:08,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:46:08,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:08,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1200882762, now seen corresponding path program 1 times [2023-04-03 02:46:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:08,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13898147] [2023-04-03 02:46:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:08,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13898147] [2023-04-03 02:46:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13898147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:08,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:08,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561116111] [2023-04-03 02:46:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:08,547 INFO L87 Difference]: Start difference. First operand 5669 states and 7519 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:10,872 INFO L93 Difference]: Finished difference Result 8183 states and 11140 transitions. [2023-04-03 02:46:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:46:10,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:10,879 INFO L225 Difference]: With dead ends: 8183 [2023-04-03 02:46:10,879 INFO L226 Difference]: Without dead ends: 5756 [2023-04-03 02:46:10,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:10,882 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 756 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:10,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 2036 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2023-04-03 02:46:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 4621. [2023-04-03 02:46:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4611 states have (on average 1.3346345695076989) internal successors, (6154), 4617 states have internal predecessors, (6154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 6157 transitions. [2023-04-03 02:46:12,662 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 6157 transitions. Word has length 72 [2023-04-03 02:46:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:12,662 INFO L495 AbstractCegarLoop]: Abstraction has 4621 states and 6157 transitions. [2023-04-03 02:46:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 6157 transitions. [2023-04-03 02:46:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:12,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:12,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:12,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:46:12,665 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:12,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash 642417970, now seen corresponding path program 1 times [2023-04-03 02:46:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723674629] [2023-04-03 02:46:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:12,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:12,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:12,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723674629] [2023-04-03 02:46:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723674629] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:12,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172013511] [2023-04-03 02:46:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:12,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:12,777 INFO L87 Difference]: Start difference. First operand 4621 states and 6157 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:15,675 INFO L93 Difference]: Finished difference Result 9395 states and 12768 transitions. [2023-04-03 02:46:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:46:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:15,683 INFO L225 Difference]: With dead ends: 9395 [2023-04-03 02:46:15,684 INFO L226 Difference]: Without dead ends: 6958 [2023-04-03 02:46:15,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:15,687 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 816 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:15,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2526 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2023-04-03 02:46:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6950. [2023-04-03 02:46:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6940 states have (on average 1.3386167146974064) internal successors, (9290), 6946 states have internal predecessors, (9290), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9293 transitions. [2023-04-03 02:46:18,519 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9293 transitions. Word has length 72 [2023-04-03 02:46:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:18,520 INFO L495 AbstractCegarLoop]: Abstraction has 6950 states and 9293 transitions. [2023-04-03 02:46:18,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9293 transitions. [2023-04-03 02:46:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:46:18,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:18,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:46:18,524 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:18,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:18,524 INFO L85 PathProgramCache]: Analyzing trace with hash 950324102, now seen corresponding path program 1 times [2023-04-03 02:46:18,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:18,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859143732] [2023-04-03 02:46:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:18,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:18,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859143732] [2023-04-03 02:46:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859143732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:18,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130442892] [2023-04-03 02:46:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:18,634 INFO L87 Difference]: Start difference. First operand 6950 states and 9293 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:23,764 INFO L93 Difference]: Finished difference Result 15008 states and 20441 transitions. [2023-04-03 02:46:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:23,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:46:23,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:23,776 INFO L225 Difference]: With dead ends: 15008 [2023-04-03 02:46:23,776 INFO L226 Difference]: Without dead ends: 10382 [2023-04-03 02:46:23,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:23,783 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 719 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:23,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2579 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10382 states. [2023-04-03 02:46:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10382 to 10374. [2023-04-03 02:46:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10374 states, 10364 states have (on average 1.334330374372829) internal successors, (13829), 10370 states have internal predecessors, (13829), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10374 states to 10374 states and 13832 transitions. [2023-04-03 02:46:28,780 INFO L78 Accepts]: Start accepts. Automaton has 10374 states and 13832 transitions. Word has length 72 [2023-04-03 02:46:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:28,781 INFO L495 AbstractCegarLoop]: Abstraction has 10374 states and 13832 transitions. [2023-04-03 02:46:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 10374 states and 13832 transitions. [2023-04-03 02:46:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:46:28,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:28,785 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] [2023-04-03 02:46:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:46:28,786 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:28,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2107163523, now seen corresponding path program 1 times [2023-04-03 02:46:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873935034] [2023-04-03 02:46:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:28,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:28,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873935034] [2023-04-03 02:46:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873935034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479726542] [2023-04-03 02:46:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:28,874 INFO L87 Difference]: Start difference. First operand 10374 states and 13832 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:34,692 INFO L93 Difference]: Finished difference Result 19571 states and 26397 transitions. [2023-04-03 02:46:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:34,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 73 [2023-04-03 02:46:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:34,704 INFO L225 Difference]: With dead ends: 19571 [2023-04-03 02:46:34,705 INFO L226 Difference]: Without dead ends: 10554 [2023-04-03 02:46:34,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:34,714 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 1072 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:34,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1703 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2023-04-03 02:46:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 8473. [2023-04-03 02:46:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8473 states, 8463 states have (on average 1.3418409547441805) internal successors, (11356), 8469 states have internal predecessors, (11356), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8473 states to 8473 states and 11359 transitions. [2023-04-03 02:46:39,368 INFO L78 Accepts]: Start accepts. Automaton has 8473 states and 11359 transitions. Word has length 73 [2023-04-03 02:46:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:39,369 INFO L495 AbstractCegarLoop]: Abstraction has 8473 states and 11359 transitions. [2023-04-03 02:46:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states and 11359 transitions. [2023-04-03 02:46:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:46:39,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:39,371 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] [2023-04-03 02:46:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 02:46:39,372 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -588970586, now seen corresponding path program 1 times [2023-04-03 02:46:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308555326] [2023-04-03 02:46:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:39,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308555326] [2023-04-03 02:46:39,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308555326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:39,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:39,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:46:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110515698] [2023-04-03 02:46:39,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:39,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:46:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:46:39,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:46:39,817 INFO L87 Difference]: Start difference. First operand 8473 states and 11359 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:47,861 INFO L93 Difference]: Finished difference Result 12341 states and 16447 transitions. [2023-04-03 02:46:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:46:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 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 73 [2023-04-03 02:46:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:47,875 INFO L225 Difference]: With dead ends: 12341 [2023-04-03 02:46:47,875 INFO L226 Difference]: Without dead ends: 11730 [2023-04-03 02:46:47,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:46:47,878 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 6167 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6167 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:47,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6167 Valid, 2769 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 02:46:47,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11730 states. [2023-04-03 02:46:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 8472. [2023-04-03 02:46:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8472 states, 8462 states have (on average 1.3417631765540061) internal successors, (11354), 8468 states have internal predecessors, (11354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8472 states to 8472 states and 11357 transitions. [2023-04-03 02:46:52,444 INFO L78 Accepts]: Start accepts. Automaton has 8472 states and 11357 transitions. Word has length 73 [2023-04-03 02:46:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 8472 states and 11357 transitions. [2023-04-03 02:46:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states and 11357 transitions. [2023-04-03 02:46:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:46:52,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:52,448 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] [2023-04-03 02:46:52,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 02:46:52,448 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:46:52,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -397619471, now seen corresponding path program 1 times [2023-04-03 02:46:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752894008] [2023-04-03 02:46:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:54,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752894008] [2023-04-03 02:46:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752894008] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:54,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 02:46:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863022757] [2023-04-03 02:46:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 02:46:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 02:46:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2023-04-03 02:46:54,989 INFO L87 Difference]: Start difference. First operand 8472 states and 11357 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:18,212 INFO L93 Difference]: Finished difference Result 20471 states and 27501 transitions. [2023-04-03 02:47:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-03 02:47:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 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 73 [2023-04-03 02:47:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:18,235 INFO L225 Difference]: With dead ends: 20471 [2023-04-03 02:47:18,235 INFO L226 Difference]: Without dead ends: 19859 [2023-04-03 02:47:18,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=590, Invalid=2380, Unknown=0, NotChecked=0, Total=2970 [2023-04-03 02:47:18,240 INFO L413 NwaCegarLoop]: 1426 mSDtfsCounter, 11104 mSDsluCounter, 20343 mSDsCounter, 0 mSdLazyCounter, 9739 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11104 SdHoareTripleChecker+Valid, 21769 SdHoareTripleChecker+Invalid, 9813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 9739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:18,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11104 Valid, 21769 Invalid, 9813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 9739 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-03 02:47:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2023-04-03 02:47:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 8470. [2023-04-03 02:47:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8460 states have (on average 1.341725768321513) internal successors, (11351), 8466 states have internal predecessors, (11351), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 11354 transitions. [2023-04-03 02:47:23,336 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 11354 transitions. Word has length 73 [2023-04-03 02:47:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:23,336 INFO L495 AbstractCegarLoop]: Abstraction has 8470 states and 11354 transitions. [2023-04-03 02:47:23,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 11354 transitions. [2023-04-03 02:47:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:47:23,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:23,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:47:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 02:47:23,340 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:47:23,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2116166870, now seen corresponding path program 1 times [2023-04-03 02:47:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810767839] [2023-04-03 02:47:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:47:23,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810767839] [2023-04-03 02:47:23,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810767839] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:23,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:23,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:47:23,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123409212] [2023-04-03 02:47:23,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:23,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:47:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:47:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:47:23,440 INFO L87 Difference]: Start difference. First operand 8470 states and 11354 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:29,262 INFO L93 Difference]: Finished difference Result 15927 states and 21641 transitions. [2023-04-03 02:47:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:47:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 73 [2023-04-03 02:47:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:29,272 INFO L225 Difference]: With dead ends: 15927 [2023-04-03 02:47:29,273 INFO L226 Difference]: Without dead ends: 8437 [2023-04-03 02:47:29,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:47:29,280 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1079 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:29,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1554 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:47:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2023-04-03 02:47:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 7404. [2023-04-03 02:47:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7394 states have (on average 1.354747092236949) internal successors, (10017), 7400 states have internal predecessors, (10017), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 10020 transitions. [2023-04-03 02:47:34,103 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 10020 transitions. Word has length 73 [2023-04-03 02:47:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:34,103 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 10020 transitions. [2023-04-03 02:47:34,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 10020 transitions. [2023-04-03 02:47:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:47:34,105 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:34,105 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] [2023-04-03 02:47:34,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 02:47:34,105 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:47:34,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash 527156363, now seen corresponding path program 1 times [2023-04-03 02:47:34,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:34,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357959505] [2023-04-03 02:47:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:34,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:47:34,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357959505] [2023-04-03 02:47:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357959505] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:34,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:47:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750744842] [2023-04-03 02:47:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:34,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:47:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:47:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:47:34,508 INFO L87 Difference]: Start difference. First operand 7404 states and 10020 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:47:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:53,019 INFO L93 Difference]: Finished difference Result 23206 states and 31587 transitions. [2023-04-03 02:47:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:47:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 [2023-04-03 02:47:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:53,045 INFO L225 Difference]: With dead ends: 23206 [2023-04-03 02:47:53,045 INFO L226 Difference]: Without dead ends: 22202 [2023-04-03 02:47:53,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:47:53,050 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 4067 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 4035 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 4088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:53,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 3809 Invalid, 4088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4035 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 02:47:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22202 states. [2023-04-03 02:47:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22202 to 7404. [2023-04-03 02:47:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7394 states have (on average 1.3546118474438733) internal successors, (10016), 7400 states have internal predecessors, (10016), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 10019 transitions. [2023-04-03 02:47:57,974 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 10019 transitions. Word has length 74 [2023-04-03 02:47:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:57,975 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 10019 transitions. [2023-04-03 02:47:57,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:47:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 10019 transitions. [2023-04-03 02:47:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:47:57,977 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:57,977 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] [2023-04-03 02:47:57,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 02:47:57,977 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:47:57,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1310581931, now seen corresponding path program 1 times [2023-04-03 02:47:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:57,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538207872] [2023-04-03 02:47:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:47:58,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538207872] [2023-04-03 02:47:58,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538207872] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:58,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:58,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:47:58,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131518755] [2023-04-03 02:47:58,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:47:58,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:47:58,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:47:58,337 INFO L87 Difference]: Start difference. First operand 7404 states and 10019 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:48:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:06,612 INFO L93 Difference]: Finished difference Result 10393 states and 13917 transitions. [2023-04-03 02:48:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:48:06,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 [2023-04-03 02:48:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:06,624 INFO L225 Difference]: With dead ends: 10393 [2023-04-03 02:48:06,624 INFO L226 Difference]: Without dead ends: 9778 [2023-04-03 02:48:06,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:48:06,627 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 5820 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5820 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:06,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5820 Valid, 2587 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:48:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9778 states. [2023-04-03 02:48:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9778 to 7404. [2023-04-03 02:48:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7394 states have (on average 1.354476602650798) internal successors, (10015), 7400 states have internal predecessors, (10015), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 10018 transitions. [2023-04-03 02:48:11,620 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 10018 transitions. Word has length 74 [2023-04-03 02:48:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:48:11,620 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 10018 transitions. [2023-04-03 02:48:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:48:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 10018 transitions. [2023-04-03 02:48:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:48:11,622 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:48:11,622 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] [2023-04-03 02:48:11,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 02:48:11,623 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:48:11,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:48:11,623 INFO L85 PathProgramCache]: Analyzing trace with hash -194603070, now seen corresponding path program 1 times [2023-04-03 02:48:11,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:48:11,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847019791] [2023-04-03 02:48:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:48:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:48:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:48:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:48:11,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:48:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847019791] [2023-04-03 02:48:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847019791] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:48:11,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:48:11,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:48:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55388197] [2023-04-03 02:48:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:48:11,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:48:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:48:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:48:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:48:11,984 INFO L87 Difference]: Start difference. First operand 7404 states and 10018 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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) [2023-04-03 02:48:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:20,282 INFO L93 Difference]: Finished difference Result 10599 states and 14172 transitions. [2023-04-03 02:48:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:48:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 [2023-04-03 02:48:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:20,294 INFO L225 Difference]: With dead ends: 10599 [2023-04-03 02:48:20,295 INFO L226 Difference]: Without dead ends: 9645 [2023-04-03 02:48:20,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:48:20,298 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 5457 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5457 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:20,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5457 Valid, 2837 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 02:48:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states.