/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:29:54,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:29:54,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:29:54,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 00:29:54,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:29:54,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:29:54,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:29:54,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:29:54,331 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:29:54,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:29:54,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:29:54,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:29:54,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:29:54,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:29:54,335 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:29:54,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:29:54,335 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:29:54,335 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:29:54,336 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:29:54,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:29:54,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:29:54,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:29:54,336 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:29:54,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:29:54,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:29:54,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:29:54,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:29:54,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:29:54,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:29:54,339 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:29:54,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:29:54,339 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:29:54,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:29:54,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:29:54,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:29:54,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:29:54,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:29:54,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:29:54,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:29:54,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:29:54,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:29:54,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:29:54,647 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:29:54,648 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:29:54,649 INFO L432 ainManager$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.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-01 00:29:55,835 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:29:56,367 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:29:56,368 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-01 00:29:56,417 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62412d801/cda2999272924ca88ca4648c10a589e4/FLAG6fa1abd0a [2023-04-01 00:29:56,440 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62412d801/cda2999272924ca88ca4648c10a589e4 [2023-04-01 00:29:56,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:29:56,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:29:56,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:29:56,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:29:56,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:29:56,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:29:56" (1/1) ... [2023-04-01 00:29:56,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45215ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:56, skipping insertion in model container [2023-04-01 00:29:56,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:29:56" (1/1) ... [2023-04-01 00:29:56,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:29:56,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:29:57,277 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.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2023-04-01 00:29:57,306 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.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2023-04-01 00:29:57,406 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.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2023-04-01 00:29:57,460 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.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2023-04-01 00:29:57,473 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.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2023-04-01 00:29:57,513 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.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2023-04-01 00:29:57,537 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.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2023-04-01 00:29:57,562 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.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2023-04-01 00:29:57,644 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.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2023-04-01 00:29:57,650 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2023-04-01 00:29:57,668 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.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2023-04-01 00:29:57,679 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.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2023-04-01 00:29:57,733 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2023-04-01 00:29:57,781 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.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2023-04-01 00:29:57,823 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.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2023-04-01 00:29:57,865 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.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2023-04-01 00:29:57,909 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2023-04-01 00:29:58,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:29:58,111 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:29:58,203 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.BOUNDED-8.pals.c.v+sep-reducer.c[32607,32620] [2023-04-01 00:29:58,214 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.BOUNDED-8.pals.c.v+sep-reducer.c[39665,39678] [2023-04-01 00:29:58,256 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.BOUNDED-8.pals.c.v+sep-reducer.c[66766,66779] [2023-04-01 00:29:58,268 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[75829,75842] [2023-04-01 00:29:58,278 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.BOUNDED-8.pals.c.v+sep-reducer.c[82520,82533] [2023-04-01 00:29:58,296 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94424,94437] [2023-04-01 00:29:58,388 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.BOUNDED-8.pals.c.v+sep-reducer.c[103377,103390] [2023-04-01 00:29:58,400 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111402,111415] [2023-04-01 00:29:58,453 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.BOUNDED-8.pals.c.v+sep-reducer.c[149914,149927] [2023-04-01 00:29:58,460 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.BOUNDED-8.pals.c.v+sep-reducer.c[153444,153457] [2023-04-01 00:29:58,473 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.BOUNDED-8.pals.c.v+sep-reducer.c[162451,162464] [2023-04-01 00:29:58,484 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.BOUNDED-8.pals.c.v+sep-reducer.c[169104,169117] [2023-04-01 00:29:58,518 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.BOUNDED-8.pals.c.v+sep-reducer.c[194798,194811] [2023-04-01 00:29:58,559 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.BOUNDED-8.pals.c.v+sep-reducer.c[226694,226707] [2023-04-01 00:29:58,599 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.BOUNDED-8.pals.c.v+sep-reducer.c[256902,256915] [2023-04-01 00:29:58,640 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.BOUNDED-8.pals.c.v+sep-reducer.c[287214,287227] [2023-04-01 00:29:58,685 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.BOUNDED-8.pals.c.v+sep-reducer.c[320546,320559] [2023-04-01 00:29:58,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:29:58,882 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:29:58,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58 WrapperNode [2023-04-01 00:29:58,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:29:58,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:29:58,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:29:58,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:29:58,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:58,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:58,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:58,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:29:59,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:29:59,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:29:59,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:29:59,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (1/1) ... [2023-04-01 00:29:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:29:59,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:29:59,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:29:59,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:29:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:29:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:29:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:29:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:29:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:29:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:29:59,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:29:59,970 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:29:59,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:30:05,580 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:30:06,870 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:30:06,870 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:30:06,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:30:06 BoogieIcfgContainer [2023-04-01 00:30:06,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:30:06,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:30:06,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:30:06,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:30:06,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:29:56" (1/3) ... [2023-04-01 00:30:06,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72296200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:30:06, skipping insertion in model container [2023-04-01 00:30:06,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:29:58" (2/3) ... [2023-04-01 00:30:06,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72296200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:30:06, skipping insertion in model container [2023-04-01 00:30:06,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:30:06" (3/3) ... [2023-04-01 00:30:06,882 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-01 00:30:06,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:30:06,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-04-01 00:30:06,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:30:07,002 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;@71fbabc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:30:07,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-04-01 00:30:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 3603 states, 3581 states have (on average 1.7807874895280649) internal successors, (6377), 3598 states have internal predecessors, (6377), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 00:30:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:30:07,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:07,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:07,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:07,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1999218923, now seen corresponding path program 1 times [2023-04-01 00:30:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292222856] [2023-04-01 00:30:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:08,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:08,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292222856] [2023-04-01 00:30:08,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292222856] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102101928] [2023-04-01 00:30:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:08,286 INFO L87 Difference]: Start difference. First operand has 3603 states, 3581 states have (on average 1.7807874895280649) internal successors, (6377), 3598 states have internal predecessors, (6377), 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 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) [2023-04-01 00:30:11,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:11,358 INFO L93 Difference]: Finished difference Result 6084 states and 10578 transitions. [2023-04-01 00:30:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:11,361 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 [2023-04-01 00:30:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:11,387 INFO L225 Difference]: With dead ends: 6084 [2023-04-01 00:30:11,387 INFO L226 Difference]: Without dead ends: 3609 [2023-04-01 00:30:11,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:11,400 INFO L413 NwaCegarLoop]: 2824 mSDtfsCounter, 17031 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17031 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:11,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17031 Valid, 3590 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 00:30:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2023-04-01 00:30:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3589. [2023-04-01 00:30:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3569 states have (on average 1.2877556738582236) internal successors, (4596), 3585 states have internal predecessors, (4596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 4599 transitions. [2023-04-01 00:30:11,666 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 4599 transitions. Word has length 68 [2023-04-01 00:30:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:11,667 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 4599 transitions. [2023-04-01 00:30:11,667 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) [2023-04-01 00:30:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 4599 transitions. [2023-04-01 00:30:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:30:11,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:11,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:30:11,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:11,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash 856841760, now seen corresponding path program 1 times [2023-04-01 00:30:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:11,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243153624] [2023-04-01 00:30:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:12,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243153624] [2023-04-01 00:30:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243153624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387983331] [2023-04-01 00:30:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:12,089 INFO L87 Difference]: Start difference. First operand 3589 states and 4599 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) [2023-04-01 00:30:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:14,582 INFO L93 Difference]: Finished difference Result 6940 states and 8872 transitions. [2023-04-01 00:30:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:14,582 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 [2023-04-01 00:30:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:14,600 INFO L225 Difference]: With dead ends: 6940 [2023-04-01 00:30:14,600 INFO L226 Difference]: Without dead ends: 4797 [2023-04-01 00:30:14,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:14,609 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 11858 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11858 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:14,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11858 Valid, 2207 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 00:30:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2023-04-01 00:30:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4772. [2023-04-01 00:30:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4752 states have (on average 1.2760942760942762) internal successors, (6064), 4768 states have internal predecessors, (6064), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 6067 transitions. [2023-04-01 00:30:14,891 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 6067 transitions. Word has length 68 [2023-04-01 00:30:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 4772 states and 6067 transitions. [2023-04-01 00:30:14,891 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) [2023-04-01 00:30:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 6067 transitions. [2023-04-01 00:30:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:30:14,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:14,900 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] [2023-04-01 00:30:14,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:30:14,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:14,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2108520693, now seen corresponding path program 1 times [2023-04-01 00:30:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141918156] [2023-04-01 00:30:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:15,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:15,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141918156] [2023-04-01 00:30:15,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141918156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920969274] [2023-04-01 00:30:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:15,333 INFO L87 Difference]: Start difference. First operand 4772 states and 6067 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) [2023-04-01 00:30:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:17,461 INFO L93 Difference]: Finished difference Result 9595 states and 12136 transitions. [2023-04-01 00:30:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:17,461 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 [2023-04-01 00:30:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:17,486 INFO L225 Difference]: With dead ends: 9595 [2023-04-01 00:30:17,486 INFO L226 Difference]: Without dead ends: 6514 [2023-04-01 00:30:17,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:17,495 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 10274 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:17,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 1989 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 00:30:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2023-04-01 00:30:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 6484. [2023-04-01 00:30:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6484 states, 6464 states have (on average 1.2696472772277227) internal successors, (8207), 6480 states have internal predecessors, (8207), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6484 states to 6484 states and 8210 transitions. [2023-04-01 00:30:17,953 INFO L78 Accepts]: Start accepts. Automaton has 6484 states and 8210 transitions. Word has length 69 [2023-04-01 00:30:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:17,955 INFO L495 AbstractCegarLoop]: Abstraction has 6484 states and 8210 transitions. [2023-04-01 00:30:17,955 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) [2023-04-01 00:30:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states and 8210 transitions. [2023-04-01 00:30:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 00:30:17,966 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:17,966 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] [2023-04-01 00:30:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:30:17,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:17,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2006184660, now seen corresponding path program 1 times [2023-04-01 00:30:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598782104] [2023-04-01 00:30:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:18,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:18,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598782104] [2023-04-01 00:30:18,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598782104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:18,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:18,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:30:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387254604] [2023-04-01 00:30:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:30:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:30:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:30:18,328 INFO L87 Difference]: Start difference. First operand 6484 states and 8210 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-01 00:30:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:20,103 INFO L93 Difference]: Finished difference Result 12412 states and 15770 transitions. [2023-04-01 00:30:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:30:20,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2023-04-01 00:30:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:20,137 INFO L225 Difference]: With dead ends: 12412 [2023-04-01 00:30:20,137 INFO L226 Difference]: Without dead ends: 8272 [2023-04-01 00:30:20,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:30:20,149 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 8705 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8705 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:20,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8705 Valid, 1733 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 00:30:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2023-04-01 00:30:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 8232. [2023-04-01 00:30:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8232 states, 8212 states have (on average 1.2739892839746711) internal successors, (10462), 8228 states have internal predecessors, (10462), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 10465 transitions. [2023-04-01 00:30:20,727 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 10465 transitions. Word has length 70 [2023-04-01 00:30:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:20,727 INFO L495 AbstractCegarLoop]: Abstraction has 8232 states and 10465 transitions. [2023-04-01 00:30:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2023-04-01 00:30:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 10465 transitions. [2023-04-01 00:30:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:30:20,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:20,738 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] [2023-04-01 00:30:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:30:20,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:20,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 904591430, now seen corresponding path program 1 times [2023-04-01 00:30:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:20,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618438860] [2023-04-01 00:30:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:21,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618438860] [2023-04-01 00:30:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618438860] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:21,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:30:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363327531] [2023-04-01 00:30:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:30:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:30:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:30:21,628 INFO L87 Difference]: Start difference. First operand 8232 states and 10465 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) [2023-04-01 00:30:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:26,056 INFO L93 Difference]: Finished difference Result 14045 states and 18115 transitions. [2023-04-01 00:30:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:30:26,061 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 [2023-04-01 00:30:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:26,100 INFO L225 Difference]: With dead ends: 14045 [2023-04-01 00:30:26,101 INFO L226 Difference]: Without dead ends: 13029 [2023-04-01 00:30:26,107 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 [2023-04-01 00:30:26,108 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 14312 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 6361 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14312 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 6504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 6361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:26,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14312 Valid, 6064 Invalid, 6504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 6361 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 00:30:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13029 states. [2023-04-01 00:30:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13029 to 8182. [2023-04-01 00:30:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8182 states, 8162 states have (on average 1.2738299436412643) internal successors, (10397), 8178 states have internal predecessors, (10397), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8182 states to 8182 states and 10400 transitions. [2023-04-01 00:30:26,775 INFO L78 Accepts]: Start accepts. Automaton has 8182 states and 10400 transitions. Word has length 71 [2023-04-01 00:30:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:26,775 INFO L495 AbstractCegarLoop]: Abstraction has 8182 states and 10400 transitions. [2023-04-01 00:30:26,775 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) [2023-04-01 00:30:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8182 states and 10400 transitions. [2023-04-01 00:30:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:30:26,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:26,785 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] [2023-04-01 00:30:26,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:30:26,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:26,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1977940664, now seen corresponding path program 1 times [2023-04-01 00:30:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:26,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138202234] [2023-04-01 00:30:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:27,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138202234] [2023-04-01 00:30:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138202234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:27,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 00:30:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819807345] [2023-04-01 00:30:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:27,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:30:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:30:27,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 00:30:27,591 INFO L87 Difference]: Start difference. First operand 8182 states and 10400 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) [2023-04-01 00:30:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:31,146 INFO L93 Difference]: Finished difference Result 14068 states and 18469 transitions. [2023-04-01 00:30:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 00:30:31,147 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 [2023-04-01 00:30:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:31,178 INFO L225 Difference]: With dead ends: 14068 [2023-04-01 00:30:31,178 INFO L226 Difference]: Without dead ends: 12942 [2023-04-01 00:30:31,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-04-01 00:30:31,186 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 8496 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 4766 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8496 SdHoareTripleChecker+Valid, 5201 SdHoareTripleChecker+Invalid, 4788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 4766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:31,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8496 Valid, 5201 Invalid, 4788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 4766 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 00:30:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12942 states. [2023-04-01 00:30:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12942 to 8038. [2023-04-01 00:30:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8038 states, 8018 states have (on average 1.273634322773759) internal successors, (10212), 8034 states have internal predecessors, (10212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8038 states to 8038 states and 10215 transitions. [2023-04-01 00:30:31,878 INFO L78 Accepts]: Start accepts. Automaton has 8038 states and 10215 transitions. Word has length 71 [2023-04-01 00:30:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:31,879 INFO L495 AbstractCegarLoop]: Abstraction has 8038 states and 10215 transitions. [2023-04-01 00:30:31,879 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) [2023-04-01 00:30:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 8038 states and 10215 transitions. [2023-04-01 00:30:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 00:30:31,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:31,887 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] [2023-04-01 00:30:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:30:31,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:31,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2123913326, now seen corresponding path program 1 times [2023-04-01 00:30:31,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:31,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178357032] [2023-04-01 00:30:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:32,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:32,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178357032] [2023-04-01 00:30:32,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178357032] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:32,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:30:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678838291] [2023-04-01 00:30:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:30:32,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:30:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:30:32,712 INFO L87 Difference]: Start difference. First operand 8038 states and 10215 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:35,766 INFO L93 Difference]: Finished difference Result 9379 states and 11923 transitions. [2023-04-01 00:30:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 00:30:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 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 72 [2023-04-01 00:30:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:35,785 INFO L225 Difference]: With dead ends: 9379 [2023-04-01 00:30:35,786 INFO L226 Difference]: Without dead ends: 9373 [2023-04-01 00:30:35,789 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 [2023-04-01 00:30:35,790 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 12295 mSDsluCounter, 4121 mSDsCounter, 0 mSdLazyCounter, 4921 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12295 SdHoareTripleChecker+Valid, 5419 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:35,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12295 Valid, 5419 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4921 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 00:30:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2023-04-01 00:30:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 8038. [2023-04-01 00:30:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8038 states, 8018 states have (on average 1.2735096033923672) internal successors, (10211), 8034 states have internal predecessors, (10211), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8038 states to 8038 states and 10214 transitions. [2023-04-01 00:30:36,536 INFO L78 Accepts]: Start accepts. Automaton has 8038 states and 10214 transitions. Word has length 72 [2023-04-01 00:30:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:36,536 INFO L495 AbstractCegarLoop]: Abstraction has 8038 states and 10214 transitions. [2023-04-01 00:30:36,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 8038 states and 10214 transitions. [2023-04-01 00:30:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 00:30:36,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:36,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:30:36,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:30:36,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:36,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash 89514824, now seen corresponding path program 1 times [2023-04-01 00:30:36,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:36,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892232260] [2023-04-01 00:30:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:36,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:37,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892232260] [2023-04-01 00:30:37,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892232260] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:37,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:37,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 00:30:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543210135] [2023-04-01 00:30:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 00:30:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 00:30:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 00:30:37,365 INFO L87 Difference]: Start difference. First operand 8038 states and 10214 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:30:40,883 INFO L93 Difference]: Finished difference Result 11163 states and 14250 transitions. [2023-04-01 00:30:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 00:30:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 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 72 [2023-04-01 00:30:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:30:40,905 INFO L225 Difference]: With dead ends: 11163 [2023-04-01 00:30:40,905 INFO L226 Difference]: Without dead ends: 11154 [2023-04-01 00:30:40,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:30:40,910 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 10965 mSDsluCounter, 4188 mSDsCounter, 0 mSdLazyCounter, 5237 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10965 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 5305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 5237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:30:40,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10965 Valid, 5459 Invalid, 5305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 5237 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 00:30:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2023-04-01 00:30:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 8038. [2023-04-01 00:30:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8038 states, 8018 states have (on average 1.2733848840109754) internal successors, (10210), 8034 states have internal predecessors, (10210), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8038 states to 8038 states and 10213 transitions. [2023-04-01 00:30:41,672 INFO L78 Accepts]: Start accepts. Automaton has 8038 states and 10213 transitions. Word has length 72 [2023-04-01 00:30:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:30:41,672 INFO L495 AbstractCegarLoop]: Abstraction has 8038 states and 10213 transitions. [2023-04-01 00:30:41,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:30:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8038 states and 10213 transitions. [2023-04-01 00:30:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 00:30:41,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:30:41,681 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] [2023-04-01 00:30:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:30:41,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-01 00:30:41,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:30:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2090151674, now seen corresponding path program 1 times [2023-04-01 00:30:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:30:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922924114] [2023-04-01 00:30:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:30:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:30:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:30:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:30:42,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:30:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922924114] [2023-04-01 00:30:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922924114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:30:42,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:30:42,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 00:30:42,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018498955] [2023-04-01 00:30:42,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:30:42,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 00:30:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:30:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 00:30:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 00:30:42,954 INFO L87 Difference]: Start difference. First operand 8038 states and 10213 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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)