/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:40:21,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:40:21,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:40:21,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:40:21,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:40:21,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:40:21,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:40:21,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:40:21,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:40:21,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:40:21,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:40:21,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:40:21,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:40:21,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:40:21,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:40:21,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:40:21,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:40:21,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:40:21,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:40:21,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:40:21,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:40:21,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:40:21,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:40:21,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:40:21,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:40:21,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:40:21,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:40:21,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:40:21,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:40:21,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:40:21,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:40:21,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:40:21,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:40:21,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:40:21,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:40:21,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:40:21,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:40:21,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:40:21,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:40:21,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:40:21,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:40:21,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:40:21,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:40:21,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:40:21,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:40:21,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:40:21,503 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:40:21,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:40:21,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:40:21,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:40:21,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:40:21,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:40:21,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:40:21,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:40:21,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:40:21,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:40:21,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:40:21,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:40:21,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:40:21,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:40:21,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:40:21,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:40:21,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:40:21,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:40:21,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:40:21,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:40:21,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:40:21,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:40:21,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:40:22,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:40:22,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:40:22,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:40:22,009 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:40:22,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:40:22,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c6af71f/dc57c518ac3644869cc54d9cfb020be2/FLAGa3e77cb9d [2020-12-22 08:40:22,908 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:40:22,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:40:22,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c6af71f/dc57c518ac3644869cc54d9cfb020be2/FLAGa3e77cb9d [2020-12-22 08:40:23,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c6af71f/dc57c518ac3644869cc54d9cfb020be2 [2020-12-22 08:40:23,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:40:23,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:40:23,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:23,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:40:23,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:40:23,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:23" (1/1) ... [2020-12-22 08:40:23,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19af78a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:23, skipping insertion in model container [2020-12-22 08:40:23,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:23" (1/1) ... [2020-12-22 08:40:23,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:40:23,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:40:23,755 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9017,9030] [2020-12-22 08:40:23,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12509,12522] [2020-12-22 08:40:23,795 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[13665,13678] [2020-12-22 08:40:23,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14321,14334] [2020-12-22 08:40:23,815 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[15842,15855] [2020-12-22 08:40:23,823 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16498,16511] [2020-12-22 08:40:23,832 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17482,17495] [2020-12-22 08:40:23,856 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19820,19833] [2020-12-22 08:40:23,866 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20479,20492] [2020-12-22 08:40:23,875 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21503,21516] [2020-12-22 08:40:23,889 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23378,23391] [2020-12-22 08:40:24,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:24,026 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:40:24,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9017,9030] [2020-12-22 08:40:24,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12509,12522] [2020-12-22 08:40:24,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[13665,13678] [2020-12-22 08:40:24,188 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14321,14334] [2020-12-22 08:40:24,197 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[15842,15855] [2020-12-22 08:40:24,202 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16498,16511] [2020-12-22 08:40:24,208 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17482,17495] [2020-12-22 08:40:24,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19820,19833] [2020-12-22 08:40:24,225 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20479,20492] [2020-12-22 08:40:24,231 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21503,21516] [2020-12-22 08:40:24,240 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23378,23391] [2020-12-22 08:40:24,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:24,370 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:40:24,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24 WrapperNode [2020-12-22 08:40:24,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:24,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:24,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:40:24,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:40:24,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:24,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:40:24,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:40:24,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:40:24,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... [2020-12-22 08:40:24,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:40:24,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:40:24,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:40:24,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:40:24,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:40:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:40:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:40:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:40:24,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:40:26,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:40:26,565 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:40:26,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:26 BoogieIcfgContainer [2020-12-22 08:40:26,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:40:26,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:40:26,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:40:26,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:40:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:40:23" (1/3) ... [2020-12-22 08:40:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16517ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:26, skipping insertion in model container [2020-12-22 08:40:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:24" (2/3) ... [2020-12-22 08:40:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16517ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:26, skipping insertion in model container [2020-12-22 08:40:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:26" (3/3) ... [2020-12-22 08:40:26,579 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 08:40:26,586 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:40:26,592 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 08:40:26,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 08:40:26,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:40:26,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:40:26,647 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:40:26,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:40:26,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:40:26,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:40:26,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:40:26,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:40:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2020-12-22 08:40:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:40:26,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:26,691 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:26,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:26,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1374718599, now seen corresponding path program 1 times [2020-12-22 08:40:26,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:26,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228431122] [2020-12-22 08:40:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:27,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228431122] [2020-12-22 08:40:27,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:27,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:27,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163472962] [2020-12-22 08:40:27,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:27,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:27,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:27,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:27,257 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 5 states. [2020-12-22 08:40:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:27,890 INFO L93 Difference]: Finished difference Result 704 states and 1191 transitions. [2020-12-22 08:40:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:27,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-22 08:40:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:27,914 INFO L225 Difference]: With dead ends: 704 [2020-12-22 08:40:27,914 INFO L226 Difference]: Without dead ends: 428 [2020-12-22 08:40:27,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-12-22 08:40:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 386. [2020-12-22 08:40:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-12-22 08:40:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 508 transitions. [2020-12-22 08:40:28,051 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 508 transitions. Word has length 59 [2020-12-22 08:40:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:28,052 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 508 transitions. [2020-12-22 08:40:28,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 508 transitions. [2020-12-22 08:40:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:40:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:28,067 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:28,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:40:28,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2133391140, now seen corresponding path program 1 times [2020-12-22 08:40:28,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:28,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735962278] [2020-12-22 08:40:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:28,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735962278] [2020-12-22 08:40:28,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:28,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:40:28,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668314124] [2020-12-22 08:40:28,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:28,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:28,291 INFO L87 Difference]: Start difference. First operand 386 states and 508 transitions. Second operand 6 states. [2020-12-22 08:40:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:28,650 INFO L93 Difference]: Finished difference Result 844 states and 1132 transitions. [2020-12-22 08:40:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:28,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 08:40:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:28,656 INFO L225 Difference]: With dead ends: 844 [2020-12-22 08:40:28,656 INFO L226 Difference]: Without dead ends: 529 [2020-12-22 08:40:28,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-12-22 08:40:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 489. [2020-12-22 08:40:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 08:40:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 663 transitions. [2020-12-22 08:40:28,705 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 663 transitions. Word has length 60 [2020-12-22 08:40:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:28,706 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 663 transitions. [2020-12-22 08:40:28,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 663 transitions. [2020-12-22 08:40:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:40:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:28,708 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:28,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:40:28,708 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash 626465560, now seen corresponding path program 1 times [2020-12-22 08:40:28,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:28,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287589950] [2020-12-22 08:40:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:28,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287589950] [2020-12-22 08:40:28,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:28,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:28,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681596048] [2020-12-22 08:40:28,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:28,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:28,870 INFO L87 Difference]: Start difference. First operand 489 states and 663 transitions. Second operand 5 states. [2020-12-22 08:40:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:29,172 INFO L93 Difference]: Finished difference Result 907 states and 1252 transitions. [2020-12-22 08:40:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:29,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:40:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:29,177 INFO L225 Difference]: With dead ends: 907 [2020-12-22 08:40:29,177 INFO L226 Difference]: Without dead ends: 473 [2020-12-22 08:40:29,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-12-22 08:40:29,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2020-12-22 08:40:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-12-22 08:40:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 641 transitions. [2020-12-22 08:40:29,215 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 641 transitions. Word has length 61 [2020-12-22 08:40:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:29,216 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 641 transitions. [2020-12-22 08:40:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 641 transitions. [2020-12-22 08:40:29,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:40:29,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:29,217 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:29,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:40:29,218 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:29,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1648270779, now seen corresponding path program 1 times [2020-12-22 08:40:29,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:29,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901994401] [2020-12-22 08:40:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:29,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901994401] [2020-12-22 08:40:29,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:29,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:29,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591899604] [2020-12-22 08:40:29,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:29,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:29,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:29,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:29,320 INFO L87 Difference]: Start difference. First operand 473 states and 641 transitions. Second operand 5 states. [2020-12-22 08:40:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:29,571 INFO L93 Difference]: Finished difference Result 891 states and 1226 transitions. [2020-12-22 08:40:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:29,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 08:40:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:29,575 INFO L225 Difference]: With dead ends: 891 [2020-12-22 08:40:29,575 INFO L226 Difference]: Without dead ends: 462 [2020-12-22 08:40:29,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-12-22 08:40:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2020-12-22 08:40:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 625 transitions. [2020-12-22 08:40:29,607 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 625 transitions. Word has length 62 [2020-12-22 08:40:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:29,608 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 625 transitions. [2020-12-22 08:40:29,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 625 transitions. [2020-12-22 08:40:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:40:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:29,625 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:29,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:40:29,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:29,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1176799625, now seen corresponding path program 1 times [2020-12-22 08:40:29,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:29,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161805343] [2020-12-22 08:40:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:29,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161805343] [2020-12-22 08:40:29,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:29,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988405491] [2020-12-22 08:40:29,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:29,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:29,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:29,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:29,877 INFO L87 Difference]: Start difference. First operand 462 states and 625 transitions. Second operand 9 states. [2020-12-22 08:40:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:31,109 INFO L93 Difference]: Finished difference Result 1442 states and 2048 transitions. [2020-12-22 08:40:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:40:31,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:40:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:31,119 INFO L225 Difference]: With dead ends: 1442 [2020-12-22 08:40:31,119 INFO L226 Difference]: Without dead ends: 1196 [2020-12-22 08:40:31,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:40:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-12-22 08:40:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 462. [2020-12-22 08:40:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 624 transitions. [2020-12-22 08:40:31,177 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 624 transitions. Word has length 63 [2020-12-22 08:40:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:31,180 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 624 transitions. [2020-12-22 08:40:31,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 624 transitions. [2020-12-22 08:40:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:40:31,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:31,181 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:31,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:40:31,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1585644853, now seen corresponding path program 1 times [2020-12-22 08:40:31,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:31,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406714867] [2020-12-22 08:40:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:31,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406714867] [2020-12-22 08:40:31,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:31,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:31,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037686932] [2020-12-22 08:40:31,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:31,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:31,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:31,425 INFO L87 Difference]: Start difference. First operand 462 states and 624 transitions. Second operand 9 states. [2020-12-22 08:40:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:32,441 INFO L93 Difference]: Finished difference Result 1441 states and 2051 transitions. [2020-12-22 08:40:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:32,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:40:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:32,457 INFO L225 Difference]: With dead ends: 1441 [2020-12-22 08:40:32,457 INFO L226 Difference]: Without dead ends: 1221 [2020-12-22 08:40:32,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:40:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-12-22 08:40:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 462. [2020-12-22 08:40:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 623 transitions. [2020-12-22 08:40:32,545 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 623 transitions. Word has length 63 [2020-12-22 08:40:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:32,546 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 623 transitions. [2020-12-22 08:40:32,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 623 transitions. [2020-12-22 08:40:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:40:32,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:32,547 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:32,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:40:32,548 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash 202563885, now seen corresponding path program 1 times [2020-12-22 08:40:32,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:32,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307929349] [2020-12-22 08:40:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:32,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307929349] [2020-12-22 08:40:32,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:32,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:32,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911577867] [2020-12-22 08:40:32,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:32,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:32,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:32,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:32,720 INFO L87 Difference]: Start difference. First operand 462 states and 623 transitions. Second operand 9 states. [2020-12-22 08:40:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:33,850 INFO L93 Difference]: Finished difference Result 1482 states and 2094 transitions. [2020-12-22 08:40:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:40:33,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-12-22 08:40:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:33,859 INFO L225 Difference]: With dead ends: 1482 [2020-12-22 08:40:33,859 INFO L226 Difference]: Without dead ends: 1196 [2020-12-22 08:40:33,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:40:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-12-22 08:40:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 462. [2020-12-22 08:40:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 621 transitions. [2020-12-22 08:40:33,921 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 621 transitions. Word has length 63 [2020-12-22 08:40:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:33,923 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 621 transitions. [2020-12-22 08:40:33,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 621 transitions. [2020-12-22 08:40:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:40:33,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:33,924 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:33,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:40:33,925 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:33,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1398072207, now seen corresponding path program 1 times [2020-12-22 08:40:33,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:33,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507732499] [2020-12-22 08:40:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:34,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507732499] [2020-12-22 08:40:34,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:34,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:40:34,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884322014] [2020-12-22 08:40:34,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:40:34,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:34,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:40:34,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:34,127 INFO L87 Difference]: Start difference. First operand 462 states and 621 transitions. Second operand 8 states. [2020-12-22 08:40:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:34,717 INFO L93 Difference]: Finished difference Result 1104 states and 1534 transitions. [2020-12-22 08:40:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:40:34,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-12-22 08:40:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:34,722 INFO L225 Difference]: With dead ends: 1104 [2020-12-22 08:40:34,722 INFO L226 Difference]: Without dead ends: 810 [2020-12-22 08:40:34,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:40:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-12-22 08:40:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 462. [2020-12-22 08:40:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 620 transitions. [2020-12-22 08:40:34,772 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 620 transitions. Word has length 63 [2020-12-22 08:40:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:34,772 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 620 transitions. [2020-12-22 08:40:34,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:40:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 620 transitions. [2020-12-22 08:40:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:34,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:34,774 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:34,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:40:34,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:34,775 INFO L82 PathProgramCache]: Analyzing trace with hash -620136770, now seen corresponding path program 1 times [2020-12-22 08:40:34,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:34,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098477909] [2020-12-22 08:40:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:34,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098477909] [2020-12-22 08:40:34,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:34,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:34,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107843948] [2020-12-22 08:40:34,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:34,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:34,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:34,921 INFO L87 Difference]: Start difference. First operand 462 states and 620 transitions. Second operand 9 states. [2020-12-22 08:40:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:36,092 INFO L93 Difference]: Finished difference Result 1410 states and 1998 transitions. [2020-12-22 08:40:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:36,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:36,100 INFO L225 Difference]: With dead ends: 1410 [2020-12-22 08:40:36,100 INFO L226 Difference]: Without dead ends: 1197 [2020-12-22 08:40:36,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-12-22 08:40:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 462. [2020-12-22 08:40:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 619 transitions. [2020-12-22 08:40:36,171 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 619 transitions. Word has length 65 [2020-12-22 08:40:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:36,172 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 619 transitions. [2020-12-22 08:40:36,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 619 transitions. [2020-12-22 08:40:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:36,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:36,177 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:36,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:40:36,179 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1292060332, now seen corresponding path program 1 times [2020-12-22 08:40:36,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:36,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898635079] [2020-12-22 08:40:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:36,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898635079] [2020-12-22 08:40:36,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:36,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:40:36,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095282471] [2020-12-22 08:40:36,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:40:36,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:36,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:40:36,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:40:36,442 INFO L87 Difference]: Start difference. First operand 462 states and 619 transitions. Second operand 11 states. [2020-12-22 08:40:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:39,838 INFO L93 Difference]: Finished difference Result 3455 states and 4993 transitions. [2020-12-22 08:40:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:40:39,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-12-22 08:40:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:39,855 INFO L225 Difference]: With dead ends: 3455 [2020-12-22 08:40:39,855 INFO L226 Difference]: Without dead ends: 3230 [2020-12-22 08:40:39,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:40:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2020-12-22 08:40:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 466. [2020-12-22 08:40:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-12-22 08:40:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 623 transitions. [2020-12-22 08:40:39,984 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 623 transitions. Word has length 65 [2020-12-22 08:40:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:39,985 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 623 transitions. [2020-12-22 08:40:39,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:40:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 623 transitions. [2020-12-22 08:40:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:39,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:39,986 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:39,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:40:39,987 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:39,987 INFO L82 PathProgramCache]: Analyzing trace with hash -109241464, now seen corresponding path program 1 times [2020-12-22 08:40:39,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:39,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640309050] [2020-12-22 08:40:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:40,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640309050] [2020-12-22 08:40:40,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:40,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:40,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208082367] [2020-12-22 08:40:40,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:40,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:40,140 INFO L87 Difference]: Start difference. First operand 466 states and 623 transitions. Second operand 9 states. [2020-12-22 08:40:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:41,298 INFO L93 Difference]: Finished difference Result 1411 states and 1998 transitions. [2020-12-22 08:40:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:41,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:41,305 INFO L225 Difference]: With dead ends: 1411 [2020-12-22 08:40:41,305 INFO L226 Difference]: Without dead ends: 1201 [2020-12-22 08:40:41,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-12-22 08:40:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 466. [2020-12-22 08:40:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-12-22 08:40:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 622 transitions. [2020-12-22 08:40:41,382 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 622 transitions. Word has length 65 [2020-12-22 08:40:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:41,382 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 622 transitions. [2020-12-22 08:40:41,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 622 transitions. [2020-12-22 08:40:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:41,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:41,384 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:41,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:40:41,384 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:41,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1375273345, now seen corresponding path program 1 times [2020-12-22 08:40:41,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:41,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615822402] [2020-12-22 08:40:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:41,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615822402] [2020-12-22 08:40:41,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:41,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:40:41,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71101117] [2020-12-22 08:40:41,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:40:41,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:41,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:40:41,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:40:41,649 INFO L87 Difference]: Start difference. First operand 466 states and 622 transitions. Second operand 11 states. [2020-12-22 08:40:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:44,382 INFO L93 Difference]: Finished difference Result 2307 states and 3302 transitions. [2020-12-22 08:40:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:40:44,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-12-22 08:40:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:44,393 INFO L225 Difference]: With dead ends: 2307 [2020-12-22 08:40:44,394 INFO L226 Difference]: Without dead ends: 2302 [2020-12-22 08:40:44,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:40:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-12-22 08:40:44,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 470. [2020-12-22 08:40:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-12-22 08:40:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 626 transitions. [2020-12-22 08:40:44,492 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 626 transitions. Word has length 65 [2020-12-22 08:40:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:44,493 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 626 transitions. [2020-12-22 08:40:44,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:40:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 626 transitions. [2020-12-22 08:40:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:44,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:44,494 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:44,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:40:44,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:44,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2058271748, now seen corresponding path program 1 times [2020-12-22 08:40:44,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:44,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695196481] [2020-12-22 08:40:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:44,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695196481] [2020-12-22 08:40:44,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:44,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:44,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548286657] [2020-12-22 08:40:44,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:44,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:44,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:44,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:44,632 INFO L87 Difference]: Start difference. First operand 470 states and 626 transitions. Second operand 9 states. [2020-12-22 08:40:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:45,850 INFO L93 Difference]: Finished difference Result 1206 states and 1685 transitions. [2020-12-22 08:40:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:45,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:45,856 INFO L225 Difference]: With dead ends: 1206 [2020-12-22 08:40:45,856 INFO L226 Difference]: Without dead ends: 1201 [2020-12-22 08:40:45,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-12-22 08:40:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 470. [2020-12-22 08:40:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-12-22 08:40:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 624 transitions. [2020-12-22 08:40:45,943 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 624 transitions. Word has length 65 [2020-12-22 08:40:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:45,944 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 624 transitions. [2020-12-22 08:40:45,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 624 transitions. [2020-12-22 08:40:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:40:45,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:45,945 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:45,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:40:45,945 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -324498446, now seen corresponding path program 1 times [2020-12-22 08:40:45,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:45,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127288226] [2020-12-22 08:40:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:46,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127288226] [2020-12-22 08:40:46,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:46,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:46,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719777423] [2020-12-22 08:40:46,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:46,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:46,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:46,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:46,087 INFO L87 Difference]: Start difference. First operand 470 states and 624 transitions. Second operand 9 states. [2020-12-22 08:40:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:47,278 INFO L93 Difference]: Finished difference Result 1242 states and 1736 transitions. [2020-12-22 08:40:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:47,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 08:40:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:47,286 INFO L225 Difference]: With dead ends: 1242 [2020-12-22 08:40:47,286 INFO L226 Difference]: Without dead ends: 1225 [2020-12-22 08:40:47,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:40:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-12-22 08:40:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 470. [2020-12-22 08:40:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-12-22 08:40:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 622 transitions. [2020-12-22 08:40:47,402 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 622 transitions. Word has length 65 [2020-12-22 08:40:47,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:47,403 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 622 transitions. [2020-12-22 08:40:47,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 622 transitions. [2020-12-22 08:40:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:47,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:47,404 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:47,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:40:47,404 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 50031272, now seen corresponding path program 1 times [2020-12-22 08:40:47,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:47,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109194275] [2020-12-22 08:40:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:47,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109194275] [2020-12-22 08:40:47,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:47,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:47,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150985937] [2020-12-22 08:40:47,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:47,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:47,567 INFO L87 Difference]: Start difference. First operand 470 states and 622 transitions. Second operand 9 states. [2020-12-22 08:40:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:48,854 INFO L93 Difference]: Finished difference Result 1206 states and 1681 transitions. [2020-12-22 08:40:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:48,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:40:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:48,859 INFO L225 Difference]: With dead ends: 1206 [2020-12-22 08:40:48,859 INFO L226 Difference]: Without dead ends: 1201 [2020-12-22 08:40:48,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-12-22 08:40:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 466. [2020-12-22 08:40:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-12-22 08:40:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 617 transitions. [2020-12-22 08:40:48,958 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 617 transitions. Word has length 66 [2020-12-22 08:40:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:48,958 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 617 transitions. [2020-12-22 08:40:48,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 617 transitions. [2020-12-22 08:40:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:40:48,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:48,960 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:48,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:40:48,960 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:48,961 INFO L82 PathProgramCache]: Analyzing trace with hash -849466761, now seen corresponding path program 1 times [2020-12-22 08:40:48,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:48,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291560787] [2020-12-22 08:40:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:49,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291560787] [2020-12-22 08:40:49,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:49,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:40:49,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040808047] [2020-12-22 08:40:49,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:40:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:40:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:49,094 INFO L87 Difference]: Start difference. First operand 466 states and 617 transitions. Second operand 9 states. [2020-12-22 08:40:50,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:50,225 INFO L93 Difference]: Finished difference Result 1446 states and 2043 transitions. [2020-12-22 08:40:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:40:50,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:40:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:50,230 INFO L225 Difference]: With dead ends: 1446 [2020-12-22 08:40:50,230 INFO L226 Difference]: Without dead ends: 1221 [2020-12-22 08:40:50,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:40:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-12-22 08:40:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 462. [2020-12-22 08:40:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-12-22 08:40:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 612 transitions. [2020-12-22 08:40:50,325 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 612 transitions. Word has length 66 [2020-12-22 08:40:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:50,325 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 612 transitions. [2020-12-22 08:40:50,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:40:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 612 transitions. [2020-12-22 08:40:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:40:50,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:50,326 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:50,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:40:50,327 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash -809481061, now seen corresponding path program 1 times [2020-12-22 08:40:50,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:50,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697995674] [2020-12-22 08:40:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:51,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697995674] [2020-12-22 08:40:51,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:51,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:40:51,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170003127] [2020-12-22 08:40:51,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:40:51,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:40:51,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:40:51,093 INFO L87 Difference]: Start difference. First operand 462 states and 612 transitions. Second operand 22 states. [2020-12-22 08:40:51,404 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-12-22 08:40:52,278 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-22 08:40:52,478 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-22 08:40:52,724 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 08:40:52,908 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-22 08:40:53,084 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-22 08:40:53,398 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-22 08:40:53,572 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:40:55,592 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-22 08:40:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:56,840 INFO L93 Difference]: Finished difference Result 1636 states and 2281 transitions. [2020-12-22 08:40:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:40:56,840 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2020-12-22 08:40:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:56,847 INFO L225 Difference]: With dead ends: 1636 [2020-12-22 08:40:56,847 INFO L226 Difference]: Without dead ends: 1424 [2020-12-22 08:40:56,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=355, Invalid=1537, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 08:40:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-12-22 08:40:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 473. [2020-12-22 08:40:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-12-22 08:40:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 626 transitions. [2020-12-22 08:40:56,942 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 626 transitions. Word has length 67 [2020-12-22 08:40:56,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:56,942 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 626 transitions. [2020-12-22 08:40:56,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:40:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 626 transitions. [2020-12-22 08:40:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:40:56,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:56,944 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:40:56,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:40:56,945 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:56,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1704969087, now seen corresponding path program 1 times [2020-12-22 08:40:56,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:56,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620225551] [2020-12-22 08:40:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:58,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620225551] [2020-12-22 08:40:58,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:58,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-22 08:40:58,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522262336] [2020-12-22 08:40:58,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-22 08:40:58,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-22 08:40:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:40:58,106 INFO L87 Difference]: Start difference. First operand 473 states and 626 transitions. Second operand 24 states. [2020-12-22 08:40:58,567 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-12-22 08:40:59,176 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-12-22 08:40:59,377 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-12-22 08:40:59,583 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:40:59,946 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 08:41:00,261 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-12-22 08:41:00,604 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-12-22 08:41:00,880 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:41:01,155 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:41:01,416 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:41:01,750 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 08:41:02,009 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:41:05,894 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-12-22 08:41:06,727 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-22 08:41:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:07,225 INFO L93 Difference]: Finished difference Result 2296 states and 3316 transitions. [2020-12-22 08:41:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 08:41:07,226 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 67 [2020-12-22 08:41:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:07,233 INFO L225 Difference]: With dead ends: 2296 [2020-12-22 08:41:07,233 INFO L226 Difference]: Without dead ends: 2081 [2020-12-22 08:41:07,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 08:41:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-12-22 08:41:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 478. [2020-12-22 08:41:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-12-22 08:41:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 632 transitions. [2020-12-22 08:41:07,364 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 632 transitions. Word has length 67 [2020-12-22 08:41:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:07,365 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 632 transitions. [2020-12-22 08:41:07,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-22 08:41:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 632 transitions. [2020-12-22 08:41:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:07,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:07,367 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:07,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:41:07,367 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:07,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1258064571, now seen corresponding path program 1 times [2020-12-22 08:41:07,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:07,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605633203] [2020-12-22 08:41:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:08,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605633203] [2020-12-22 08:41:08,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:08,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-12-22 08:41:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948656341] [2020-12-22 08:41:08,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 08:41:08,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 08:41:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:41:08,519 INFO L87 Difference]: Start difference. First operand 478 states and 632 transitions. Second operand 25 states. [2020-12-22 08:41:09,022 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2020-12-22 08:41:09,800 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:41:09,999 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:41:10,186 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-12-22 08:41:10,557 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-12-22 08:41:10,884 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-12-22 08:41:11,268 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-12-22 08:41:11,555 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:41:11,830 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 08:41:12,108 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 08:41:12,456 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 08:41:12,735 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:41:13,171 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-22 08:41:13,480 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:41:13,768 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-22 08:41:14,088 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:41:14,286 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:41:14,600 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:41:14,893 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:41:17,852 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:41:18,633 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:41:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:19,531 INFO L93 Difference]: Finished difference Result 2343 states and 3386 transitions. [2020-12-22 08:41:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:41:19,532 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 67 [2020-12-22 08:41:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:19,538 INFO L225 Difference]: With dead ends: 2343 [2020-12-22 08:41:19,539 INFO L226 Difference]: Without dead ends: 2132 [2020-12-22 08:41:19,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 08:41:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-12-22 08:41:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 475. [2020-12-22 08:41:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-12-22 08:41:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 628 transitions. [2020-12-22 08:41:19,669 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 628 transitions. Word has length 67 [2020-12-22 08:41:19,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:19,670 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 628 transitions. [2020-12-22 08:41:19,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 08:41:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 628 transitions. [2020-12-22 08:41:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:19,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:19,671 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:19,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:41:19,671 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1868195616, now seen corresponding path program 1 times [2020-12-22 08:41:19,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:19,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283795817] [2020-12-22 08:41:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:20,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283795817] [2020-12-22 08:41:20,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:20,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:41:20,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336773205] [2020-12-22 08:41:20,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:41:20,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:41:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:41:20,679 INFO L87 Difference]: Start difference. First operand 475 states and 628 transitions. Second operand 23 states. [2020-12-22 08:41:21,106 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-12-22 08:41:21,722 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 08:41:21,916 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 08:41:22,119 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:41:22,488 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:41:22,793 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-22 08:41:23,149 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-12-22 08:41:23,447 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:41:23,711 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:41:24,179 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-22 08:41:24,545 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:41:24,852 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-12-22 08:41:25,119 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-22 08:41:25,393 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-22 08:41:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:29,409 INFO L93 Difference]: Finished difference Result 1526 states and 2139 transitions. [2020-12-22 08:41:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:41:29,410 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 67 [2020-12-22 08:41:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:29,416 INFO L225 Difference]: With dead ends: 1526 [2020-12-22 08:41:29,416 INFO L226 Difference]: Without dead ends: 1311 [2020-12-22 08:41:29,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=443, Invalid=1627, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 08:41:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-12-22 08:41:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 481. [2020-12-22 08:41:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-12-22 08:41:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 634 transitions. [2020-12-22 08:41:29,572 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 634 transitions. Word has length 67 [2020-12-22 08:41:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:29,572 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 634 transitions. [2020-12-22 08:41:29,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:41:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 634 transitions. [2020-12-22 08:41:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:29,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:29,573 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:29,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:41:29,574 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:29,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:29,574 INFO L82 PathProgramCache]: Analyzing trace with hash -827796874, now seen corresponding path program 1 times [2020-12-22 08:41:29,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:29,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973140326] [2020-12-22 08:41:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:30,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973140326] [2020-12-22 08:41:30,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:30,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:41:30,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242976383] [2020-12-22 08:41:30,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:41:30,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:41:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:41:30,579 INFO L87 Difference]: Start difference. First operand 481 states and 634 transitions. Second operand 23 states. [2020-12-22 08:41:30,867 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-12-22 08:41:31,381 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:41:31,798 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:41:32,032 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 08:41:32,324 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-12-22 08:41:32,519 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:41:32,712 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:41:34,441 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:41:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:36,879 INFO L93 Difference]: Finished difference Result 1489 states and 2088 transitions. [2020-12-22 08:41:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:41:36,880 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 67 [2020-12-22 08:41:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:36,887 INFO L225 Difference]: With dead ends: 1489 [2020-12-22 08:41:36,887 INFO L226 Difference]: Without dead ends: 1277 [2020-12-22 08:41:36,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 08:41:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-12-22 08:41:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 491. [2020-12-22 08:41:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-12-22 08:41:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2020-12-22 08:41:37,012 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 67 [2020-12-22 08:41:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:37,012 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2020-12-22 08:41:37,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:41:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2020-12-22 08:41:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:37,014 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:37,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:41:37,014 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 455689729, now seen corresponding path program 1 times [2020-12-22 08:41:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:37,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393216680] [2020-12-22 08:41:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:37,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393216680] [2020-12-22 08:41:37,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:37,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:41:37,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554481471] [2020-12-22 08:41:37,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:41:37,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:37,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:41:37,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:41:37,949 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand 22 states. [2020-12-22 08:41:38,202 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-12-22 08:41:38,615 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-22 08:41:38,776 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:41:39,201 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:41:39,405 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 08:41:39,648 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 08:41:39,855 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:41:40,037 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:41:41,879 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:41:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:44,078 INFO L93 Difference]: Finished difference Result 1283 states and 1778 transitions. [2020-12-22 08:41:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:41:44,081 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2020-12-22 08:41:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:44,085 INFO L225 Difference]: With dead ends: 1283 [2020-12-22 08:41:44,085 INFO L226 Difference]: Without dead ends: 1279 [2020-12-22 08:41:44,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=288, Invalid=1434, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:41:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-12-22 08:41:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 497. [2020-12-22 08:41:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-12-22 08:41:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 657 transitions. [2020-12-22 08:41:44,249 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 657 transitions. Word has length 67 [2020-12-22 08:41:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:44,249 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 657 transitions. [2020-12-22 08:41:44,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:41:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 657 transitions. [2020-12-22 08:41:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:41:44,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:44,251 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:44,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:41:44,251 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:44,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1324827419, now seen corresponding path program 1 times [2020-12-22 08:41:44,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:44,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809822538] [2020-12-22 08:41:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:45,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809822538] [2020-12-22 08:41:45,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:45,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:41:45,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950201012] [2020-12-22 08:41:45,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:41:45,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:45,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:41:45,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:41:45,303 INFO L87 Difference]: Start difference. First operand 497 states and 657 transitions. Second operand 23 states. [2020-12-22 08:41:45,599 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 08:41:46,173 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:41:46,360 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:41:46,542 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:41:46,843 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:41:47,080 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:41:47,357 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-22 08:41:47,623 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:41:47,871 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:41:48,058 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:41:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:52,502 INFO L93 Difference]: Finished difference Result 1484 states and 2084 transitions. [2020-12-22 08:41:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:41:52,503 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 67 [2020-12-22 08:41:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:52,507 INFO L225 Difference]: With dead ends: 1484 [2020-12-22 08:41:52,508 INFO L226 Difference]: Without dead ends: 1269 [2020-12-22 08:41:52,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=314, Invalid=1492, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:41:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-12-22 08:41:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 496. [2020-12-22 08:41:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-12-22 08:41:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 654 transitions. [2020-12-22 08:41:52,664 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 654 transitions. Word has length 67 [2020-12-22 08:41:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:52,665 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 654 transitions. [2020-12-22 08:41:52,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:41:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 654 transitions. [2020-12-22 08:41:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:41:52,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:52,666 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:52,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:41:52,667 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1391401820, now seen corresponding path program 1 times [2020-12-22 08:41:52,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:52,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907877234] [2020-12-22 08:41:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:52,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907877234] [2020-12-22 08:41:52,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:52,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:41:52,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588676142] [2020-12-22 08:41:52,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:41:52,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:52,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:41:52,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:41:52,922 INFO L87 Difference]: Start difference. First operand 496 states and 654 transitions. Second operand 11 states. [2020-12-22 08:41:53,551 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:41:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:41:56,714 INFO L93 Difference]: Finished difference Result 2334 states and 3328 transitions. [2020-12-22 08:41:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:41:56,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-22 08:41:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:41:56,718 INFO L225 Difference]: With dead ends: 2334 [2020-12-22 08:41:56,718 INFO L226 Difference]: Without dead ends: 2327 [2020-12-22 08:41:56,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:41:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2020-12-22 08:41:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 500. [2020-12-22 08:41:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-12-22 08:41:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 657 transitions. [2020-12-22 08:41:56,856 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 657 transitions. Word has length 68 [2020-12-22 08:41:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:41:56,856 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 657 transitions. [2020-12-22 08:41:56,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:41:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 657 transitions. [2020-12-22 08:41:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:41:56,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:41:56,857 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:41:56,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:41:56,857 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:41:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:41:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 851991008, now seen corresponding path program 1 times [2020-12-22 08:41:56,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:41:56,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637577604] [2020-12-22 08:41:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:41:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:41:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:41:57,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637577604] [2020-12-22 08:41:57,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:41:57,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:41:57,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426959061] [2020-12-22 08:41:57,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:41:57,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:41:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:41:57,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:41:57,628 INFO L87 Difference]: Start difference. First operand 500 states and 657 transitions. Second operand 15 states. [2020-12-22 08:41:57,777 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:41:58,306 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:41:58,528 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:41:58,763 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:41:59,000 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:41:59,201 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:41:59,439 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:41:59,692 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:42:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:01,226 INFO L93 Difference]: Finished difference Result 1442 states and 2041 transitions. [2020-12-22 08:42:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:42:01,227 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-12-22 08:42:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:01,230 INFO L225 Difference]: With dead ends: 1442 [2020-12-22 08:42:01,230 INFO L226 Difference]: Without dead ends: 1164 [2020-12-22 08:42:01,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:42:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2020-12-22 08:42:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 454. [2020-12-22 08:42:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-12-22 08:42:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 602 transitions. [2020-12-22 08:42:01,370 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 602 transitions. Word has length 68 [2020-12-22 08:42:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:01,370 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 602 transitions. [2020-12-22 08:42:01,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:42:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 602 transitions. [2020-12-22 08:42:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:01,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:01,371 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:01,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:42:01,372 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:01,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1527682650, now seen corresponding path program 1 times [2020-12-22 08:42:01,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:01,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361686575] [2020-12-22 08:42:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:01,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361686575] [2020-12-22 08:42:01,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:01,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:42:01,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050345139] [2020-12-22 08:42:01,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:42:01,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:42:01,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:42:01,878 INFO L87 Difference]: Start difference. First operand 454 states and 602 transitions. Second operand 13 states. [2020-12-22 08:42:02,548 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:02,695 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:03,234 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:42:03,524 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:42:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:04,339 INFO L93 Difference]: Finished difference Result 1176 states and 1643 transitions. [2020-12-22 08:42:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:42:04,340 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-12-22 08:42:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:04,341 INFO L225 Difference]: With dead ends: 1176 [2020-12-22 08:42:04,341 INFO L226 Difference]: Without dead ends: 964 [2020-12-22 08:42:04,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:42:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-12-22 08:42:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 450. [2020-12-22 08:42:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-12-22 08:42:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 597 transitions. [2020-12-22 08:42:04,477 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 597 transitions. Word has length 68 [2020-12-22 08:42:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:04,478 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 597 transitions. [2020-12-22 08:42:04,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:42:04,478 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 597 transitions. [2020-12-22 08:42:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:04,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:04,479 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:04,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:42:04,479 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:04,480 INFO L82 PathProgramCache]: Analyzing trace with hash 986767498, now seen corresponding path program 1 times [2020-12-22 08:42:04,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:04,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168619654] [2020-12-22 08:42:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:05,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168619654] [2020-12-22 08:42:05,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:05,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:42:05,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417913557] [2020-12-22 08:42:05,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:42:05,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:05,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:42:05,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:42:05,007 INFO L87 Difference]: Start difference. First operand 450 states and 597 transitions. Second operand 12 states. [2020-12-22 08:42:05,548 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:42:05,693 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-12-22 08:42:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:06,597 INFO L93 Difference]: Finished difference Result 944 states and 1311 transitions. [2020-12-22 08:42:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:42:06,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-12-22 08:42:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:06,600 INFO L225 Difference]: With dead ends: 944 [2020-12-22 08:42:06,600 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 08:42:06,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:42:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 08:42:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 435. [2020-12-22 08:42:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-12-22 08:42:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 578 transitions. [2020-12-22 08:42:06,742 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 578 transitions. Word has length 68 [2020-12-22 08:42:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:06,743 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 578 transitions. [2020-12-22 08:42:06,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:42:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 578 transitions. [2020-12-22 08:42:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:06,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:06,744 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:06,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:42:06,744 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash -922376210, now seen corresponding path program 1 times [2020-12-22 08:42:06,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:06,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152874954] [2020-12-22 08:42:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:07,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152874954] [2020-12-22 08:42:07,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:07,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:42:07,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496623704] [2020-12-22 08:42:07,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:42:07,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:42:07,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:42:07,232 INFO L87 Difference]: Start difference. First operand 435 states and 578 transitions. Second operand 13 states. [2020-12-22 08:42:07,914 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:08,065 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:42:08,407 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:42:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:09,429 INFO L93 Difference]: Finished difference Result 1157 states and 1618 transitions. [2020-12-22 08:42:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:42:09,430 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-12-22 08:42:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:09,440 INFO L225 Difference]: With dead ends: 1157 [2020-12-22 08:42:09,440 INFO L226 Difference]: Without dead ends: 943 [2020-12-22 08:42:09,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-12-22 08:42:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 415. [2020-12-22 08:42:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-12-22 08:42:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 548 transitions. [2020-12-22 08:42:09,586 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 548 transitions. Word has length 68 [2020-12-22 08:42:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:09,586 INFO L481 AbstractCegarLoop]: Abstraction has 415 states and 548 transitions. [2020-12-22 08:42:09,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:42:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 548 transitions. [2020-12-22 08:42:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:09,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:09,587 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:09,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:42:09,587 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:09,587 INFO L82 PathProgramCache]: Analyzing trace with hash 361110393, now seen corresponding path program 1 times [2020-12-22 08:42:09,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:09,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267486269] [2020-12-22 08:42:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:10,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267486269] [2020-12-22 08:42:10,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:10,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:42:10,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848080625] [2020-12-22 08:42:10,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:42:10,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:42:10,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:42:10,248 INFO L87 Difference]: Start difference. First operand 415 states and 548 transitions. Second operand 14 states. [2020-12-22 08:42:10,866 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:42:11,046 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:42:11,214 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 08:42:11,407 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:42:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:12,307 INFO L93 Difference]: Finished difference Result 899 states and 1248 transitions. [2020-12-22 08:42:12,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:42:12,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-12-22 08:42:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:12,310 INFO L225 Difference]: With dead ends: 899 [2020-12-22 08:42:12,310 INFO L226 Difference]: Without dead ends: 658 [2020-12-22 08:42:12,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-12-22 08:42:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 406. [2020-12-22 08:42:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-12-22 08:42:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 534 transitions. [2020-12-22 08:42:12,498 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 534 transitions. Word has length 68 [2020-12-22 08:42:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:12,498 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 534 transitions. [2020-12-22 08:42:12,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:42:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 534 transitions. [2020-12-22 08:42:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:12,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:12,499 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:12,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:42:12,500 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 823611388, now seen corresponding path program 1 times [2020-12-22 08:42:12,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:12,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007137432] [2020-12-22 08:42:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:12,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007137432] [2020-12-22 08:42:12,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:12,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:12,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040330613] [2020-12-22 08:42:12,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:12,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:12,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:12,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:12,659 INFO L87 Difference]: Start difference. First operand 406 states and 534 transitions. Second operand 9 states. [2020-12-22 08:42:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:13,850 INFO L93 Difference]: Finished difference Result 693 states and 929 transitions. [2020-12-22 08:42:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:42:13,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:42:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:13,853 INFO L225 Difference]: With dead ends: 693 [2020-12-22 08:42:13,853 INFO L226 Difference]: Without dead ends: 686 [2020-12-22 08:42:13,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:42:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-12-22 08:42:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 406. [2020-12-22 08:42:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-12-22 08:42:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 533 transitions. [2020-12-22 08:42:14,002 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 533 transitions. Word has length 68 [2020-12-22 08:42:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:14,002 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 533 transitions. [2020-12-22 08:42:14,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 533 transitions. [2020-12-22 08:42:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:14,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:14,003 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:14,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:42:14,003 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash 520441226, now seen corresponding path program 1 times [2020-12-22 08:42:14,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538543371] [2020-12-22 08:42:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:14,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538543371] [2020-12-22 08:42:14,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:14,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:14,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181189461] [2020-12-22 08:42:14,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:14,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:14,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:14,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:14,233 INFO L87 Difference]: Start difference. First operand 406 states and 533 transitions. Second operand 11 states. [2020-12-22 08:42:14,839 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:42:15,750 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 08:42:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:19,842 INFO L93 Difference]: Finished difference Result 3404 states and 4904 transitions. [2020-12-22 08:42:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:42:19,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-22 08:42:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:19,849 INFO L225 Difference]: With dead ends: 3404 [2020-12-22 08:42:19,849 INFO L226 Difference]: Without dead ends: 3152 [2020-12-22 08:42:19,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:42:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2020-12-22 08:42:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 414. [2020-12-22 08:42:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-22 08:42:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 541 transitions. [2020-12-22 08:42:20,029 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 541 transitions. Word has length 68 [2020-12-22 08:42:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:20,030 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 541 transitions. [2020-12-22 08:42:20,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 541 transitions. [2020-12-22 08:42:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:20,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:20,031 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:20,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:42:20,031 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1956990499, now seen corresponding path program 1 times [2020-12-22 08:42:20,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:20,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042896064] [2020-12-22 08:42:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:20,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042896064] [2020-12-22 08:42:20,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:20,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:42:20,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868977954] [2020-12-22 08:42:20,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:42:20,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:42:20,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:42:20,273 INFO L87 Difference]: Start difference. First operand 414 states and 541 transitions. Second operand 11 states. [2020-12-22 08:42:20,900 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:42:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:23,119 INFO L93 Difference]: Finished difference Result 1256 states and 1748 transitions. [2020-12-22 08:42:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:42:23,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-12-22 08:42:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:23,122 INFO L225 Difference]: With dead ends: 1256 [2020-12-22 08:42:23,123 INFO L226 Difference]: Without dead ends: 1249 [2020-12-22 08:42:23,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:42:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2020-12-22 08:42:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 414. [2020-12-22 08:42:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-22 08:42:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 540 transitions. [2020-12-22 08:42:23,293 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 540 transitions. Word has length 68 [2020-12-22 08:42:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:23,293 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 540 transitions. [2020-12-22 08:42:23,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:42:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 540 transitions. [2020-12-22 08:42:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:23,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:23,294 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:23,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:42:23,295 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1580596319, now seen corresponding path program 1 times [2020-12-22 08:42:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:23,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769918169] [2020-12-22 08:42:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:23,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769918169] [2020-12-22 08:42:23,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:23,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:42:23,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138219387] [2020-12-22 08:42:23,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:42:23,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:23,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:42:23,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:42:23,928 INFO L87 Difference]: Start difference. First operand 414 states and 540 transitions. Second operand 14 states. [2020-12-22 08:42:24,630 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-12-22 08:42:24,817 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-12-22 08:42:24,991 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-22 08:42:25,177 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-22 08:42:25,480 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-12-22 08:42:25,803 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 08:42:26,162 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-12-22 08:42:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:26,921 INFO L93 Difference]: Finished difference Result 776 states and 1050 transitions. [2020-12-22 08:42:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:42:26,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-12-22 08:42:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:26,924 INFO L225 Difference]: With dead ends: 776 [2020-12-22 08:42:26,925 INFO L226 Difference]: Without dead ends: 772 [2020-12-22 08:42:26,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:42:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-12-22 08:42:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 408. [2020-12-22 08:42:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-12-22 08:42:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 533 transitions. [2020-12-22 08:42:27,183 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 533 transitions. Word has length 68 [2020-12-22 08:42:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:27,183 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 533 transitions. [2020-12-22 08:42:27,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:42:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 533 transitions. [2020-12-22 08:42:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:42:27,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:27,184 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:27,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:42:27,185 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1417579687, now seen corresponding path program 1 times [2020-12-22 08:42:27,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:27,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768087335] [2020-12-22 08:42:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:27,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768087335] [2020-12-22 08:42:27,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:27,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:42:27,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107138489] [2020-12-22 08:42:27,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:42:27,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:42:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:42:27,896 INFO L87 Difference]: Start difference. First operand 408 states and 533 transitions. Second operand 14 states. [2020-12-22 08:42:28,445 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-12-22 08:42:28,682 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:42:28,887 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:42:29,077 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:42:29,276 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:42:29,532 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-22 08:42:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:30,659 INFO L93 Difference]: Finished difference Result 1112 states and 1560 transitions. [2020-12-22 08:42:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:42:30,660 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-12-22 08:42:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:30,662 INFO L225 Difference]: With dead ends: 1112 [2020-12-22 08:42:30,662 INFO L226 Difference]: Without dead ends: 1080 [2020-12-22 08:42:30,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:42:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2020-12-22 08:42:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 376. [2020-12-22 08:42:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-22 08:42:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 498 transitions. [2020-12-22 08:42:30,845 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 498 transitions. Word has length 68 [2020-12-22 08:42:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:30,845 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 498 transitions. [2020-12-22 08:42:30,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:42:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 498 transitions. [2020-12-22 08:42:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:42:30,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:30,846 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:30,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:42:30,846 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1317093723, now seen corresponding path program 1 times [2020-12-22 08:42:30,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:30,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419335577] [2020-12-22 08:42:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:30,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419335577] [2020-12-22 08:42:30,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:30,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:42:30,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086400851] [2020-12-22 08:42:30,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:42:30,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:30,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:42:30,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:42:30,996 INFO L87 Difference]: Start difference. First operand 376 states and 498 transitions. Second operand 9 states. [2020-12-22 08:42:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:32,256 INFO L93 Difference]: Finished difference Result 906 states and 1252 transitions. [2020-12-22 08:42:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:42:32,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:42:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:32,260 INFO L225 Difference]: With dead ends: 906 [2020-12-22 08:42:32,260 INFO L226 Difference]: Without dead ends: 654 [2020-12-22 08:42:32,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:42:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-12-22 08:42:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 368. [2020-12-22 08:42:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-12-22 08:42:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 488 transitions. [2020-12-22 08:42:32,521 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 488 transitions. Word has length 69 [2020-12-22 08:42:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:32,522 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 488 transitions. [2020-12-22 08:42:32,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:42:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 488 transitions. [2020-12-22 08:42:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:42:32,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:32,523 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:32,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 08:42:32,523 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash -880982966, now seen corresponding path program 1 times [2020-12-22 08:42:32,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:32,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441858525] [2020-12-22 08:42:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:32,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441858525] [2020-12-22 08:42:32,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:32,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:42:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701095753] [2020-12-22 08:42:32,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:42:32,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:32,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:42:32,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:42:32,820 INFO L87 Difference]: Start difference. First operand 368 states and 488 transitions. Second operand 12 states. [2020-12-22 08:42:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:35,744 INFO L93 Difference]: Finished difference Result 1187 states and 1640 transitions. [2020-12-22 08:42:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:42:35,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-12-22 08:42:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:35,748 INFO L225 Difference]: With dead ends: 1187 [2020-12-22 08:42:35,748 INFO L226 Difference]: Without dead ends: 1180 [2020-12-22 08:42:35,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:42:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-12-22 08:42:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 364. [2020-12-22 08:42:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-12-22 08:42:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 483 transitions. [2020-12-22 08:42:36,010 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 483 transitions. Word has length 70 [2020-12-22 08:42:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:36,011 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 483 transitions. [2020-12-22 08:42:36,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:42:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 483 transitions. [2020-12-22 08:42:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:42:36,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:36,012 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:36,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 08:42:36,012 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:36,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:36,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1997555533, now seen corresponding path program 1 times [2020-12-22 08:42:36,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:36,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264026464] [2020-12-22 08:42:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264026464] [2020-12-22 08:42:37,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:37,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:42:37,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631257018] [2020-12-22 08:42:37,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:42:37,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:37,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:42:37,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:42:37,370 INFO L87 Difference]: Start difference. First operand 364 states and 483 transitions. Second operand 22 states. [2020-12-22 08:42:37,847 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-12-22 08:42:38,246 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-12-22 08:42:38,473 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-22 08:42:38,705 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 08:42:38,899 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 08:42:39,301 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-12-22 08:42:39,622 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 08:42:40,009 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-12-22 08:42:40,295 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:42:40,568 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:42:42,112 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-12-22 08:42:44,059 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-12-22 08:42:45,248 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-12-22 08:42:46,818 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-12-22 08:42:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:48,181 INFO L93 Difference]: Finished difference Result 2723 states and 3999 transitions. [2020-12-22 08:42:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 08:42:48,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-12-22 08:42:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:48,188 INFO L225 Difference]: With dead ends: 2723 [2020-12-22 08:42:48,188 INFO L226 Difference]: Without dead ends: 2717 [2020-12-22 08:42:48,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:42:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2020-12-22 08:42:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 375. [2020-12-22 08:42:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-12-22 08:42:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 497 transitions. [2020-12-22 08:42:48,546 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 497 transitions. Word has length 70 [2020-12-22 08:42:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:48,546 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 497 transitions. [2020-12-22 08:42:48,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:42:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 497 transitions. [2020-12-22 08:42:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:42:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:48,547 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:48,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 08:42:48,548 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1662348756, now seen corresponding path program 1 times [2020-12-22 08:42:48,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:48,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70574763] [2020-12-22 08:42:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:42:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:42:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70574763] [2020-12-22 08:42:50,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:42:50,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-22 08:42:50,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934050602] [2020-12-22 08:42:50,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 08:42:50,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:42:50,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 08:42:50,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:42:50,270 INFO L87 Difference]: Start difference. First operand 375 states and 497 transitions. Second operand 23 states. [2020-12-22 08:42:50,957 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-12-22 08:42:51,389 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-22 08:42:51,570 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 08:42:51,805 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-12-22 08:42:52,077 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-22 08:42:52,375 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:42:52,945 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:42:53,442 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-12-22 08:42:54,084 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-12-22 08:42:54,507 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:42:54,900 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:42:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:42:59,420 INFO L93 Difference]: Finished difference Result 1053 states and 1488 transitions. [2020-12-22 08:42:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:42:59,422 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-12-22 08:42:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:42:59,425 INFO L225 Difference]: With dead ends: 1053 [2020-12-22 08:42:59,425 INFO L226 Difference]: Without dead ends: 1045 [2020-12-22 08:42:59,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=315, Invalid=1491, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 08:42:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-12-22 08:42:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 379. [2020-12-22 08:42:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-12-22 08:42:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 502 transitions. [2020-12-22 08:42:59,704 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 502 transitions. Word has length 70 [2020-12-22 08:42:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:42:59,704 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 502 transitions. [2020-12-22 08:42:59,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 08:42:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 502 transitions. [2020-12-22 08:42:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:42:59,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:42:59,706 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:42:59,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 08:42:59,706 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:42:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:42:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash 106947905, now seen corresponding path program 1 times [2020-12-22 08:42:59,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:42:59,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178698308] [2020-12-22 08:42:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:42:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:00,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178698308] [2020-12-22 08:43:00,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:00,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-12-22 08:43:00,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318180276] [2020-12-22 08:43:00,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 08:43:00,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 08:43:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:43:00,927 INFO L87 Difference]: Start difference. First operand 379 states and 502 transitions. Second operand 17 states. [2020-12-22 08:43:01,191 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:43:01,589 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 18 [2020-12-22 08:43:01,908 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:43:02,347 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:43:02,844 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-22 08:43:03,256 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:43:03,661 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:43:04,006 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:43:04,325 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:43:04,659 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:43:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:07,417 INFO L93 Difference]: Finished difference Result 805 states and 1107 transitions. [2020-12-22 08:43:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:43:07,419 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71 [2020-12-22 08:43:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:07,421 INFO L225 Difference]: With dead ends: 805 [2020-12-22 08:43:07,421 INFO L226 Difference]: Without dead ends: 797 [2020-12-22 08:43:07,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:43:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-12-22 08:43:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 384. [2020-12-22 08:43:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-12-22 08:43:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 507 transitions. [2020-12-22 08:43:07,644 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 507 transitions. Word has length 71 [2020-12-22 08:43:07,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:07,644 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 507 transitions. [2020-12-22 08:43:07,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 08:43:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 507 transitions. [2020-12-22 08:43:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:07,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:07,645 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:07,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 08:43:07,645 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:07,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2112008133, now seen corresponding path program 1 times [2020-12-22 08:43:07,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:07,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491930144] [2020-12-22 08:43:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:08,083 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-12-22 08:43:08,254 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-12-22 08:43:08,406 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 08:43:08,605 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-12-22 08:43:09,058 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-22 08:43:09,215 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-22 08:43:09,379 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-22 08:43:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:09,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491930144] [2020-12-22 08:43:09,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:09,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:43:09,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452510532] [2020-12-22 08:43:09,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:43:09,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:09,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:43:09,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:09,934 INFO L87 Difference]: Start difference. First operand 384 states and 507 transitions. Second operand 20 states. [2020-12-22 08:43:10,174 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-22 08:43:10,724 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:43:10,992 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 08:43:11,394 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-22 08:43:11,629 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:43:11,928 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-22 08:43:12,312 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-12-22 08:43:12,599 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:43:12,903 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:43:14,425 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:43:14,902 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:43:16,143 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:43:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:20,684 INFO L93 Difference]: Finished difference Result 2057 states and 2943 transitions. [2020-12-22 08:43:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:43:20,686 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 71 [2020-12-22 08:43:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:20,690 INFO L225 Difference]: With dead ends: 2057 [2020-12-22 08:43:20,690 INFO L226 Difference]: Without dead ends: 2051 [2020-12-22 08:43:20,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:43:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2020-12-22 08:43:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 395. [2020-12-22 08:43:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-12-22 08:43:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2020-12-22 08:43:20,993 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 71 [2020-12-22 08:43:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:20,993 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2020-12-22 08:43:20,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:43:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2020-12-22 08:43:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:20,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:20,994 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:20,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 08:43:20,995 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1776801356, now seen corresponding path program 1 times [2020-12-22 08:43:20,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:20,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687239691] [2020-12-22 08:43:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:21,714 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:43:21,860 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:43:22,017 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:43:22,188 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:43:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:22,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687239691] [2020-12-22 08:43:22,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:22,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:43:22,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641185381] [2020-12-22 08:43:22,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:43:22,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:43:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:43:22,529 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand 19 states. [2020-12-22 08:43:22,714 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 08:43:23,182 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-12-22 08:43:23,483 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-22 08:43:23,744 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 08:43:24,085 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-12-22 08:43:24,496 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-22 08:43:24,808 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-22 08:43:25,151 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-22 08:43:25,381 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-22 08:43:26,340 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:43:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:29,613 INFO L93 Difference]: Finished difference Result 1055 states and 1460 transitions. [2020-12-22 08:43:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:43:29,615 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-12-22 08:43:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:29,617 INFO L225 Difference]: With dead ends: 1055 [2020-12-22 08:43:29,617 INFO L226 Difference]: Without dead ends: 1047 [2020-12-22 08:43:29,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:43:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-12-22 08:43:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 396. [2020-12-22 08:43:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-12-22 08:43:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 523 transitions. [2020-12-22 08:43:29,873 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 523 transitions. Word has length 71 [2020-12-22 08:43:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:29,873 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 523 transitions. [2020-12-22 08:43:29,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:43:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 523 transitions. [2020-12-22 08:43:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:29,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:29,874 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:29,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 08:43:29,874 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:29,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1979298898, now seen corresponding path program 1 times [2020-12-22 08:43:29,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:29,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062149782] [2020-12-22 08:43:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:30,339 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:43:30,514 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:43:30,680 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-22 08:43:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:31,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062149782] [2020-12-22 08:43:31,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:31,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:43:31,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327933493] [2020-12-22 08:43:31,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:43:31,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:31,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:43:31,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:31,744 INFO L87 Difference]: Start difference. First operand 396 states and 523 transitions. Second operand 20 states. [2020-12-22 08:43:32,033 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:43:32,360 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 08:43:32,559 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-22 08:43:32,869 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-12-22 08:43:33,143 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 08:43:33,553 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:43:33,898 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-22 08:43:34,550 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 08:43:35,141 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 08:43:35,721 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-22 08:43:36,146 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-22 08:43:36,438 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:43:36,749 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:43:37,159 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:43:37,665 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-22 08:43:38,124 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-22 08:43:38,283 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-12-22 08:43:40,083 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 08:43:41,277 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 08:43:42,531 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-22 08:43:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:43,560 INFO L93 Difference]: Finished difference Result 2118 states and 3084 transitions. [2020-12-22 08:43:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:43:43,561 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 71 [2020-12-22 08:43:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:43,564 INFO L225 Difference]: With dead ends: 2118 [2020-12-22 08:43:43,564 INFO L226 Difference]: Without dead ends: 2112 [2020-12-22 08:43:43,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:43:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-12-22 08:43:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 396. [2020-12-22 08:43:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-12-22 08:43:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 523 transitions. [2020-12-22 08:43:43,778 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 523 transitions. Word has length 71 [2020-12-22 08:43:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:43,779 INFO L481 AbstractCegarLoop]: Abstraction has 396 states and 523 transitions. [2020-12-22 08:43:43,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:43:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 523 transitions. [2020-12-22 08:43:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:43,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:43,780 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:43,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 08:43:43,780 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash 998415278, now seen corresponding path program 1 times [2020-12-22 08:43:43,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:43,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425286222] [2020-12-22 08:43:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:44,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425286222] [2020-12-22 08:43:44,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:44,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:43:44,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128194494] [2020-12-22 08:43:44,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:43:44,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:44,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:43:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:43:44,381 INFO L87 Difference]: Start difference. First operand 396 states and 523 transitions. Second operand 12 states. [2020-12-22 08:43:44,532 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-12-22 08:43:44,895 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-12-22 08:43:45,149 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 08:43:45,369 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 08:43:45,657 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-22 08:43:45,924 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-22 08:43:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:47,320 INFO L93 Difference]: Finished difference Result 1140 states and 1591 transitions. [2020-12-22 08:43:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:43:47,321 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-12-22 08:43:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:47,323 INFO L225 Difference]: With dead ends: 1140 [2020-12-22 08:43:47,323 INFO L226 Difference]: Without dead ends: 1125 [2020-12-22 08:43:47,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-12-22 08:43:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 380. [2020-12-22 08:43:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-12-22 08:43:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 503 transitions. [2020-12-22 08:43:47,524 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 503 transitions. Word has length 71 [2020-12-22 08:43:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:47,525 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 503 transitions. [2020-12-22 08:43:47,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:43:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 503 transitions. [2020-12-22 08:43:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:43:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:47,526 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 08:43:47,526 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1657884430, now seen corresponding path program 1 times [2020-12-22 08:43:47,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:47,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921375678] [2020-12-22 08:43:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:48,051 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-22 08:43:48,400 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-22 08:43:48,603 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 08:43:48,776 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-12-22 08:43:48,955 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-12-22 08:43:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:49,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921375678] [2020-12-22 08:43:49,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:43:49,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:43:49,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785052061] [2020-12-22 08:43:49,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:43:49,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:49,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:43:49,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:43:49,455 INFO L87 Difference]: Start difference. First operand 380 states and 503 transitions. Second operand 18 states. [2020-12-22 08:43:49,699 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:43:50,014 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2020-12-22 08:43:50,244 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:43:50,486 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:43:50,857 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:43:51,123 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:43:51,499 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 08:43:51,864 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:43:52,227 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-22 08:43:52,587 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:43:52,992 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-22 08:43:53,389 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-12-22 08:43:53,683 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-12-22 08:43:54,081 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 08:43:54,244 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-12-22 08:43:54,754 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:43:56,206 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:43:57,989 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 08:43:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:59,580 INFO L93 Difference]: Finished difference Result 1801 states and 2597 transitions. [2020-12-22 08:43:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:43:59,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 71 [2020-12-22 08:43:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:59,585 INFO L225 Difference]: With dead ends: 1801 [2020-12-22 08:43:59,585 INFO L226 Difference]: Without dead ends: 1795 [2020-12-22 08:43:59,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:43:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-12-22 08:43:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 380. [2020-12-22 08:43:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-12-22 08:43:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 503 transitions. [2020-12-22 08:43:59,795 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 503 transitions. Word has length 71 [2020-12-22 08:43:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:59,795 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 503 transitions. [2020-12-22 08:43:59,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:43:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 503 transitions. [2020-12-22 08:43:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:43:59,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:59,796 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:43:59,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 08:43:59,796 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash 12037150, now seen corresponding path program 1 times [2020-12-22 08:43:59,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:59,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778456429] [2020-12-22 08:43:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:00,316 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:44:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:01,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778456429] [2020-12-22 08:44:01,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:01,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:44:01,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196916639] [2020-12-22 08:44:01,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:44:01,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:01,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:44:01,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:44:01,025 INFO L87 Difference]: Start difference. First operand 380 states and 503 transitions. Second operand 18 states. [2020-12-22 08:44:01,246 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:44:01,743 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:02,045 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:44:02,439 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:44:02,799 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-12-22 08:44:03,117 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:44:03,435 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:44:03,713 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:44:03,976 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 08:44:04,231 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:44:04,460 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:44:04,738 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:44:04,938 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 08:44:06,534 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2020-12-22 08:44:07,019 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:44:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:09,434 INFO L93 Difference]: Finished difference Result 1215 states and 1727 transitions. [2020-12-22 08:44:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:44:09,437 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 72 [2020-12-22 08:44:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:09,439 INFO L225 Difference]: With dead ends: 1215 [2020-12-22 08:44:09,439 INFO L226 Difference]: Without dead ends: 1201 [2020-12-22 08:44:09,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:44:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2020-12-22 08:44:09,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 375. [2020-12-22 08:44:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-12-22 08:44:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 497 transitions. [2020-12-22 08:44:09,673 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 497 transitions. Word has length 72 [2020-12-22 08:44:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:09,673 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 497 transitions. [2020-12-22 08:44:09,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:44:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 497 transitions. [2020-12-22 08:44:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:44:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:09,674 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:44:09,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 08:44:09,674 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash 899991450, now seen corresponding path program 1 times [2020-12-22 08:44:09,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:09,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207742403] [2020-12-22 08:44:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:10,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207742403] [2020-12-22 08:44:10,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:10,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:44:10,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110423412] [2020-12-22 08:44:10,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:44:10,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:10,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:44:10,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:44:10,687 INFO L87 Difference]: Start difference. First operand 375 states and 497 transitions. Second operand 14 states. [2020-12-22 08:44:11,476 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:44:11,767 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:44:12,066 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:44:12,468 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-22 08:44:12,752 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:44:13,889 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 08:44:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:44:14,677 INFO L93 Difference]: Finished difference Result 719 states and 1007 transitions. [2020-12-22 08:44:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:44:14,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-12-22 08:44:14,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:44:14,681 INFO L225 Difference]: With dead ends: 719 [2020-12-22 08:44:14,681 INFO L226 Difference]: Without dead ends: 711 [2020-12-22 08:44:14,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:44:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-22 08:44:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 375. [2020-12-22 08:44:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-12-22 08:44:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2020-12-22 08:44:14,928 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 72 [2020-12-22 08:44:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:44:14,929 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2020-12-22 08:44:14,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:44:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2020-12-22 08:44:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:44:14,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:44:14,930 INFO L422 BasicCegarLoop]: 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] [2020-12-22 08:44:14,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 08:44:14,930 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:44:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:44:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1568731702, now seen corresponding path program 1 times [2020-12-22 08:44:14,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:44:14,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149302273] [2020-12-22 08:44:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:44:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:44:16,035 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:16,193 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:16,355 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-12-22 08:44:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:44:17,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149302273] [2020-12-22 08:44:17,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:44:17,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:44:17,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288154115] [2020-12-22 08:44:17,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:44:17,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:44:17,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:44:17,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:44:17,054 INFO L87 Difference]: Start difference. First operand 375 states and 496 transitions. Second operand 20 states. [2020-12-22 08:44:17,276 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30